Which type of molecule will require energy to cross the cell membrane? Question 3 options: A) carbon dioxide B) Na+ C) nonpolar molecules D) oxygen

Answers

Answer 1

Answer:

B) Na+

Explanation: Na+ molecule is polar, oxygen and carbon dioxide are nonpolar molecules. The cell membrane is a phospholipid bilayer made up of lipid molecules with polar and nonpolar ends. Since it is a bilayer, two phospholipid layers are arranged, one on the other in such a way that one faces the back of the other. The non polar ends are away from outside and inside of the cell, while  the polar ends faces towards all the molecules inside and outside the cell.

Since polar-polar molecules repel each other, Na+ can't pass through the cell membrane easily. So it uses the proteins attached the cell membrane inside and outside to transport such molecules by using energy in terms of ATP.


Related Questions

A cell from a tissue culture has 38 chromosomes. After mitosis and cytokinesis, one daughter cell has 39 chromosomes and other has 37. What might have occurred to cause the abnormal chromosome numbers?​

Answers

The spindle fibres of a chromosome failed to separate a chromosome to sister chromatids during anaphase of mitosis resulting in an additional sister chromatid being pulled into a Daughter cell, hence having 39 chromosomes; and the other Daughter cell having one less chromosome.

An abnormal number of chromosomes is known as aneuploidy, which is a kind of chromosomal abnormality.

What are abnormal chromosome numbers?​

By either adding or losing chromosomes during mitosis, an aneuploidy results in daughter cells with a total number of chromosomes that is not an exact multiple of a haploid set.

Aneuploidies are typical of several chromosomal abnormalities and cancer cells. In addition, monosomy is a kind of aneuploidy in which daughter cells have just one copy of each chromosome rather than the two copies that diploid cells have.

For instance, the removal of the X chromosome results in Turner syndrome, a monosomy.

Therefore, one daughter cell having 39 chromosomes and the other having 37, is due to aneuploidy.

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The formation of sperm cells and egg cells is necessary for which of the following processes?

Answers

Answer:

Meiosis.

Explanation:

Meiosis is used to make special cells - sperm cells and egg cells

The formation of sperm cells and egg cells is necessary for the process of meiosis.

What is meiosis?

Meiosis is a type of reproduction in which a parent cell divide into four daughter cells that are genetically different from the parent cell. The daughter cells have half number of chromosome of the parent cell.

This process produce the gametes which are the sperm cell and egg cell.Meiosis or gametogenesis is the process that produce human egg and sperm cell. Meiosis or gametogenesis is the process that produce human egg and sperm cell.

Meiosis is a special type of nuclear division which segregates one copy of each homologous chromosome into each new "gamete". It reduces the number of set of chromosomes by half, from 46 to 23, so that when gametic recombination or fertilization occurs the ploidy of the parent will be reestablished. Spermatogonia are the cells in the testes that will undergo meiosis while Oogonia are the egg cells that will undergo meiosis.

Therefore, The formation of sperm cells and egg cells is necessary for the process of meiosis.

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eggs are used in alot of baking goods eaten over thanksgiving. eggs only have one set of chromosomes. list three vocabulary words or terms that describe the number of chromosomes found in an egg.

Answers

The three vocabulary words or terms that describe the number of chromosomes found in an egg are are haploid, diploid and triploid.

Explanation:

Egg is a very common ingredient which is used a lot in baking goods like making of cakes and cookies. The egg has only one set of chromosomes. There are few terms which are used for describing the number of chromosomes found in egg. The term haploid means egg having single set of unpaired chromosomes.

The term diploid means having two sets of complete chromosomes obtaining from parents’ cell. The term triploid means having an extra set of unpaired chromosomes. The case of triploid is very rare and uncommon. It happens at very rare case. It is also not stable as diploid.

Final answer:

The three terms that can be used to describe the number of chromosomes in an egg, which is one set of chromosomes, are 'haploid', '1n' and '23 chromosomes'.

Explanation:

The terms that describe the number of chromosomes found in an egg are:

Haploid: This term represents cells that have a single set of chromosomes. In the context of your question, an egg is haploid because it contains one set of chromosomes. 1n: This term is often used to describe cells that contain one set of chromosomes, like eggs. The 'n' stands for one set of chromosomes. 23 chromosomes: This term represents the actual number of chromosomes found in an egg. Human eggs (and also sperm) carry 23 chromosomes out of the full 46, which is why they are called haploid.

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Where do the end products of the light reactions travel too?

Answers

Answer:

There are two end products of the light reaction of photosynthesis, ATP and NADPH. These molecules are produced during the cyclic and the non-cyclic photophosphorylation reactions. These are the products which are used in the dark reactions.

The ATP and NADPH produced in the light reactions of photosynthesis are transported to the stroma of the chloroplast, where they are used in the Calvin cycle.

The end products of the light reactions of photosynthesis, which are ATP and NADPH, travel to the stroma of the chloroplast. Here, they are utilized in the Calvin cycle to synthesize organic molecules like glucose from carbon dioxide. The light reactions occur within the thylakoid membranes, where photon energy is harnessed to split water molecules, producing electrons, protons, and oxygen. The electrons move through an electron transport chain, resulting in the generation of ATP and NADPH. During this process, hydrogen ions (H+) are pumped into the thylakoid lumen, creating a proton gradient that powers ATP synthase for ATP production.

1. Describe how nighttime carbon dioxide concentrations near the forest should compare with the midday

concentrations near the forest. Explain your answer using two biological processes.

Answers

Answer: carbondioxide concentration is high at  night, and low during the midday.

Explanation:

This can be explained with the PHOSYNTHESIS and RESPIRATION (cellular respiration).

Photosynthesis is the process of manufacturing of food substances by plants, bacteria and some other organisms. These organisms use energy in sunlight to combine carbondioxide and water, in the presence of the green pigments (chlorophyll in leaves) and enzymes to form GLUCOSE and OXYGEN. Glucose is the main end product (digested food in plants.)The oxygen is for other organisms including man, and plants to breathe in.  

                                                SUNLIGHT

         C02 + H2 0                       ---------------- >      C6 H 12 06   + Oxygen

                                               Chlorophyll      

Sunlight is needed to breakdown   oxygen and protons in water molecules. This is the source of oxygen molecules in photosynthesis that we human and other animas take in. The hydrogen is needed for glucose production.

Therefore during the midday, the concentrations of CO2 at midday near the forest   is always low because plants continuously use these for photosynthesis, by removing it from atmosphere.

However, at night time   C02 concentration near the forest is always high. This is because at night, the rate photosynthesis drops because there is no sunlight. But plant undergo respiration by breaking down the glucose manufactured during (phosynthesis) by combining it with oxygen to produce carbondioxide, and water vapour. This increases C02 concentrations at night.  

       Glucose + Oxygen    ------> Carbondioxide and Water

          C6 H 12 06 + 602             ------> 6C02 + 6H 0

If two tabby cats are crossed with each other, what is the likelihood that they’ll have a tabby kitten? a black kitten?

Answers

Final answer:

The likelihood of two tabby cats having tabby or black kittens depends on their genetics. If both parents have the relevant genes, the probability is higher, but variations can still occur.

Explanation:

The likelihood of two tabby cats having a tabby kitten depends on the genetics of the cats involved. In general, if both parents have the tabby gene, the probability of having a tabby kitten is high. However, if one or both parents do not have the tabby gene, the probability might be lower. It's important to note that coat color in cats is determined by multiple genes, so there can be variations in the coat color of the offspring even if both parents are tabbies.

The likelihood of two tabby cats having a black kitten is also influenced by genetics. If both parents have the black gene, there is a higher probability of having a black kitten. However, if one or both parents do not have the black gene, the likelihood of having a black kitten is lower. Again, it's important to consider that coat color in cats is determined by multiple genes, so there can be variations in the coat color of the offspring.

The correct answer is The likelihood of having a tabby kitten when two tabby cats are crossed is 100%. The likelihood of having a black kitten is 0%.

The tabby pattern is a coat colouring in cats characterized by stripes, dots, or swirling patterns. The tabby pattern is determined by the agouti gene, which controls the distribution of pigment in the hair shaft. There are different types of tabby patterns, including mackerel, classic, spotted, and ticked tabby.

When two tabby cats are crossed, they will produce kittens that exhibit the tabby pattern because the tabby pattern is a dominant trait. This means that even if the cats carry recessive genes for other coat colors or patterns, the dominant tabby gene will mask these recessive traits in the offspring. Therefore, all kittens from this cross will show some form of tabby pattern, making the likelihood of having a tabby kitten 100%.

The colour black in cats is determined by the presence of the black gene, which is separate from the agouti gene responsible for the tabby pattern. For a black kitten to be born, both parents must carry the recessive black gene. Since the question specifies that both parents are tabby, and there is no mention of them carrying the recessive black gene, we cannot assume that they do. Therefore, without the presence of the recessive black gene in both parents, the likelihood of having a black kitten from two tabby parents is 0%.

It is important to note that if the tabby parents are actually black tabbies (which is a colour variation where the tabby pattern is present but obscured by the black pigment), they could potentially have black kittens if they carry the recessive black gene. However, the question does not provide this information, so we assume that the parents are typical tabbies without the recessive black gene, and thus the likelihood of a black kitten is 0%.

The table below shows the average distances of Venus and Earth from the sun.

What is the difference between the orbital periods of Venus and Earth?
a. 1.72 years
b. 1.62 years
c. 0.62 years
d. 0.28 years

Answers

Answer:

The answer is C. 0.62 years

The answer is C i just did it

why most
ecologists do not study the biosphere level of
organization.

Answers

Answer: Most ecologists do not study the biosphere level of organization because it is difficult to study all of life on earth as a whole. It is more effective to study it broken down into parts.

Explanation:

Final answer:

Ecologists typically do not study the biosphere level of organization due to its complexity, the vast amount of data required, and the resources needed to model such interactions. Instead, they focus on more manageable levels such as the organism, population, community, or ecosystem levels to gain insights into ecological processes.

Explanation:

Ecologists study organisms and their environments at different levels, from individual organisms to the whole biosphere. The biosphere is the most inclusive level, encompassing all organisms on Earth and the regions they inhabit. While it might seem comprehensive to focus on the biosphere level, most ecologists do not study at this level due to its immense complexity and scale. Issues like ocean pollution, air pollution, and global climate change are indeed investigated at the biosphere level, but these are often addressed through more specialized interdisciplinary fields such as environmental science, climatology, and global ecology.

Studying the biosphere inherently requires vast amounts of data and resources to accurately understand and model the interactions at play, which can be challenging to manage even with modern technology. Moreover, ecological phenomena at this level are influenced by a multitude of factors, including both biotic components (living species) and abiotic components (air, water, and soil). These factors combined with the dynamic nature of ecological systems make it difficult for ecologists primarily working in laboratories to conduct consistent and comprehensive research at the biosphere level without considerable investment in time and resources.

what structure, in the human body, performs similar function as sieve tube?​

Answers

The answer would be the Phloem
Final answer:

Phloem tissue in the human body performs a similar function to the sieve tube. It consists of sieve-tube cells that are arranged in a long tube and transport organic substances.

Explanation:

Phloem tissue is a plant vascular tissue responsible for transporting organic nutrients, primarily sugars produced during photosynthesis, from the leaves to other parts of the plant. It consists of specialized cells, including sieve tube elements and companion cells, and functions bidirectionally, facilitating the distribution of essential substances throughout the plant.

In the human body, the structure that performs a similar function to the sieve tube is the phloem tissue. The sieve-tube cells in the phloem tissue are arranged end to end to form a long sieve tube, which transports organic substances like sugars and amino acids. These substances flow through perforated sieve plates that connect the sieve-tube cells.

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With sympatric speciation a physical barrier arises and separates two populations ending gene flow between them.

Answers

Explanation;

False.

This describes allopatric speciation.

During the process of cell division, spontaneous changes within the genome can arise, called mutations. These are errors occur when copies of the DNA within the cell are made; mutations may range from small changes called single nucleotide polymorphisms, to large scale deletions, and additions which span multiple genes.

These mutations form variants which become stable within a population, leading to the formation of separate, genetically distinct populations called species. New species arise through several evolutionary mechanisms such as:

allopatric speciation- physical barriers to gene flow ; isolation of groups which evolve separately in their environments by accruing suitable traits, to become a new speciesperipatric speciation- similar to allopatric speciation, but one group is much smaller, making the unique traits more notable, or distinctparapatric speciation- subpopulations in a large geographic region evolve reproductive isolation by mating with those nearby, however they continue to undergo gene exchange along a common border regionand sympatric speciation- absence of physical barriers which hinder gene flow; reproductive isolation arise through many forms of the same genes called polymorphisms

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Which of the following is NOT necessary for multicellular life? A. Sexual reproduction B. Cell adhesion C. Signalling between cells D. Cell to cell corodination

Answers

Answer:

A. Sexual reproduction

Explanation:

A multicellular organism is made up of more than one cell. Humans, animals, and plants are all examples of multicellular organisms. Groups of cells form tissue, groups of tissue forms organs, groups of organs form systems.

Unicellular organisms receive material directly from their environment.  Multicellular organisms have systems for moving materials throughout their body. Unicellular organisms can perform all of life’s functions within a single cell. Multicellular organisms have many cells that each perform a special function. Cells develop into their mature forms through the process of cell differentiation. Cells differ because different combinations of genes are expressed. Organs are groups of tissues that perform a specific or related function. Organ systems are groups of organs that carry out similar functions.

For example, stem cells are classified into three types: totipotent  (or growing into any other cell type), pluripotent, or growing into any cell type but a totipotent cell), multipotent  (or growing into cells of a closely related cell family).

What are the unique drivers of behavior that are a result of language and culture?

Answers

Answer:

Meme

Explanation:

The term "meme" is well known all over the world. It is usually used in the "world of the internet." It refers to the phenomenon of "virilizing" a piece of information, ie, any video, image, phrase, idea, music, and so on. It helps to spread any knowledge between multiple users from all over the world within a short time. Along with this, it helps to achieve a lot of popularity quickly. The idea of a meme can be summed up by a conductor of behavior that results from the language and culture of a particular place. It can multiply through the ideas and information that originate from individual to individual.

Language and culture intricately influence behavior through gendered communication expectations, cultural norms governing public discourse, and the shaping of thought and action. These factors affect group behaviors and consumer preferences, reflective of deep cultural diversity.

The unique drivers of behavior resulting from language and culture include the roles, attitudes, and personality traits associated with different ways of speaking within a cultural group. Language and gender play a crucial role, with various cultures imposing different expectations on how individuals should communicate based on their gender identities. Deviating from these prescribed roles can lead to social repercussions. Cultural norms and rules influence communication patterns, including which topics are considered appropriate to discuss in public and private spaces. In addition, language, as a complex and flexible tool, shapes our thought and actions, organizes our world, and preserves culture through dynamic speech communities and performative rituals.

These cultural and linguistic differences can influence how people behave in groups, how we interact with each other, and how consumer preferences form based on social norms and religious beliefs. This diversity reflects not just in international contexts but also within communities that share the same language, indicating the deep intertwining of language, culture, and individual experience. Understanding these factors is crucial for fostering effective communication and addressing the subtle nuances that arise from cultural diversity.

Examine the images carefully and use them to answer PART A and PART B.



Answers

in part A; photosynthesis is happening and it is making oxygen and glucose by using the sun and water.
in part B; the organelle is a mitochondria. it produces ATP/energy for the cell.

How many cells make up the human body?!

Answers

Answer:

about 37.2 trillion cells in the average human body

Explanation:


Produce an equation that could be used to calculate the population growth of a certain population (e.g a country's
population growth).

Answers

Answer:

r = (b-d)/p

Explanation:

Net reproductive rate is (r)

Births is (b)

Deaths is (d)

Population is (p)

Escherichia coli, or E.coli, is a species of bacteria. Entamoeba histolytica, or E. histolytica, is a single-celled amoeba. What do E. coli and E. histolytica have in common? Select all that apply.



A. They depend on sources of energy or food.



B. They are unable to respond to changes in their environment.



C. They maintain homeostasis by cell specialization.



D. They reproduce.

Answers

Answer:

The correct answer will be option- A and D

Explanation:

E.coli is a bacteria which is pathogenic to humans and E. histolytica is an amoeba which is a parasite.  Both are different species but both are single-celled organism which to survive share feature among them.

The common characters shared by these two species are: they depend on the source of energy for their survival which they usually get from the hosts. Both the species reproduce to produce progenies like them which help them maintain continuity of the species of Earth.

Thus, options- A and D are the correct answer.

Both Escherichia coli and Entamoeba histolytica are species of bacteria. They both depend on sources of energy or food and are also capable of reproducing. A and D are the right options.

Bacteria species, including E. coli and E. histolytical, are generally heterotrophic. In order words, they are not able to manufacture their own food but depend on external sources for their food or energy.

Both E. coli and E. histolytical are also capable of fulfilling the characteristics of living organisms, which include reproduction.

Bacteria are capable of reproducing in a variety of ways, including binary and multiple fission.

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How do you think vestigial structures came about?

Answers

Answer and Explanation:

Vestigial structures are those that have in the course of time ceased to be functional and therefore have become reduced in size or are rudimentary. Example is the appendix which  in humans has no digestive function, a vestigial tail present in humans in form of much-reduced coccyx.

What do plants do with the nitrogen they absorb through their roots?

Answers

Final answer:

Plants absorb nitrogen through their roots in the form of nitrates, produced by nitrogen-fixing bacteria that live in soil or plant roots. This nitrogen is used to synthesize vital organic compounds like amino acids. Decomposers and nitrifying bacteria also play key roles in the nitrogen cycle by recycling nitrogen back into the soil for plant use.

Explanation:

Plants absorb nitrogen in the form of compounds such as nitrates through their roots, which are essential for their growth. The nitrogen absorbed is a crucial part of the nitrogen cycle, where nitrogen-fixing bacteria convert atmospheric nitrogen into forms that plants can use. These bacteria either live in the soil or in symbiotic relationship with the roots of leguminous plants such as peas. The fixed nitrogen is then used by plants to create amino acids, proteins, and other important organic compounds that are vital for plant growth and development.

Moreover, decomposers play a vital role in the nitrogen cycle by breaking down organic matter, including dead organisms and waste, and releasing nitrogen back into the soil in the form of ammonium ions, which plants can also absorb. These ammonium ions may be further transformed into nitrates by nitrifying bacteria in the soil, completing the cycle and enabling plants to continue to assimilate the nitrogen they need.

3. Mitosis and meiosis are similar processes, but they have some very important differences. Explain how mitosis and meiosis are alike and how they are different. Provide at least two similarities and three differences.

Answers

SIMILARITIES

1.They are both life processes

2.They both occur in stages

DIFFERENCES

1.Mitosis occur in one stage while meiosis occur in two stages

2.Mitosis are processes that occur in healing of wounds while meiosis occur during reproduction

3.Mitosis as diploid number while meiosis as haploid number of daughter cells

What is a female's genotype?
What is a male's genotype?

Answers

In humans, the section of the genotype that represents female sex is XX, and XY for males. Hope this helped ;)

does fire have a defined boundary

Answers

Answer: Yes.

Explanation: Prescribed burning activity where fire is applied generally to most or all of an area within well defined boundaries for reduction of fuel hazard, as a resource management treatment, or both.

The statement "does fire have a defined boundary" is absolutely true.

What is a Fire?

Fire may be defined as a circumstance, procedure, or instance of the burning of fuel or another material that is being ignited and significantly combined with oxygen, liberating light, heat, and flame.

Such types of fire activities generally possess definite boundaries in order to reduce the fuel that is significantly hazardous for the survival of the living organism.

Apart from this, a fire is initiated under full control as well as the management of an external team for regulating the extreme resource utilization, the level of destruction, absolute treatment of resources, and their treatment.

It may also be thought that the activity of fire is one of the most dangerous for the lives and properties of all sorts of living organisms.

Therefore, the statement "does fire have a defined boundary" is absolutely true.

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What aspect of the cell theory did Redi’s experiment support? Explain.

PLEASE EXPLAIN AND USE DETAILS FROM THE PASSAGE...

Answers

Answer:

All cells come from pre-existing cells.

Explanation:

Cell theory was proposed by MJ Schleiden , T.Schwann and Rudolf Virchow.Cell theory states that, all organisms are made up of cells, Cell is the structural and functional unit of life and Cells arise from pre-existing cells.In ancient time there was a concept of spontaneous existence of life.People believed that life arose from inorganic substances.But when Fransesco Redi observed that maggot arose on meat.He hypothesised that the maggot must have risen from fly egg.To confirm this hypothesis he set up an experiment in which  he kept meats in flasks; some open to air, some covered with gauge and some completely sealed.It was obvious that the sealed flask will not support life as it does not have air .The  flask covered with gauge proved that the concept of evolution of life from inorganic substance was wrong because the flask had all the inorganic elements that support life like air water light etc but no maggots grew in it.The open flask , in which the maggots grew proved that maggots arose from the eggs that were laid by the fly.Only the open flask had provisions for the fly to enter it and lay eggs. These eggs were the first cell of the maggot.Thus, Redi's Experiment supported the fact that cells arise from preexisting cells.

Which statement best describes glucose?

Answers

Answer:

The answer is the third one; It is organic because it dissolves in water.

Explanation:

Final answer:

Glucose, a monosaccharide with the formula C6H12O6, is the chief source of energy for both plants and animals. In plants, it is produced by photosynthesis, while in the body, glucose is broken down via glycolysis to form ATP, the body's primary energy molecule. Excess glucose is stored as glycogen in the liver.

Explanation:

The statement that best describes glucose is that it is a monosaccharide with the chemical formula C6H12O6 and is the body's most readily available source of energy. Glucose is pivotal for the energy requirements in both plants and animals. In plants, glucose is synthesized using carbon dioxide and water during the process of photosynthesis, and excess glucose is stored as starch.

In the human body, glucose enters the cells via the circulatory system. Here, through a series of reactions known as glycolysis, glucose is broken down, which helps in the formation of adenosine triphosphate (ATP), an essential molecule that provides the energy required for several cellular functions. Any excess glucose is stored in the liver as glycogen.

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which organism is the primary consumer in this food chain? oak tree> squirrel> owl> eagle

A) eagle.

B) squirrel.

C)owl.

D) oak tree.

needin asap for apex!

Answers

Answer:

B. Squirrel

Explanation:

Oak tree -> squirrel ->owl ->eagle

squirrel is eating the producer which makes the squirrel the primary consumer

making a financial transaction based on information not available to other investors is known as

Answers

Answer:b

Explanation:

Insider trading is the practice of engaging in a cash product based on information that is not usually accessible to investors.

Why did you use the word "transaction"?

A transaction is described as the exchange of goods and services, the transfer of cash, or the agreement to trade goods & services in the future, based on the transaction definition.

What kinds of transactions are there?

In a firm, there really are primarily four different sorts of financial transactions. Sales, acquisitions, receipts, & payments are the four different categories of financial transactions. Let us just take a moment learning about each of them: Sales are the exchanges in which a purchaser trading activity to a sellers in exchange for money and credit.

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Sulfur emissions from industry combine with water in the atmosphere and form acid rain. A new factory is built very close to the lake that Josh visits often. By examining the table that shows what pH range different species can survive, Josh decides that the aquatic life will be affected by the changes in pH that the lake. Josh correctly decides that organisms that will be the most affected are
A) perch and frogs.
B) mayfly and bass.
C) snails and clams.
D) frogs and salamanders.


Answers

Answer: snails and clams

Explanation:

Osmosis, or the movement of water into and out of a cell, is directly related to the concentration gradient on both sides of the cell membrane and indirectly to the fact that
A) water has a high heat of vaporization.
B) water has hydrogen bonds that promote cohesion.
C) the adhesive properties of water promote its capillarity.
D) the polarity of water molecules make it the universal solvent

Answers

Explanation:

D) the polarity of water molecules make it the universal solvent

In osmosis, molecules of water move across a semi permeable membrane, from regions of high concentration to regions of low concentration until an equilibrium is reached. This always occurs along the concentration gradient within the system.

Given that water is a universal solvent, capable of dissolving most chemical substances, solutes diffuse into water-filled regions constantly, and the osmotic potential, along with the solute potential may constantly undergo change. Osmosis, restores osmotic balance through the movement of water molecules while restricting the movement of solutes.

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Two genotype individuals Xx and xx cannot have genotype children:
I. xx
II Xx
III. XX
A) only I
B) only II
C) only III
D) I and II
E) II and III

Answers

Answer:

C.)

Explanation:

There is no way that they can have XX children because one parent has xx there is no other capital x

Answer:

C

Explanation:

1. What is the end product of replication?

Answers

Answer:

In replication, the end result is two daughter cells.

Explanation:

The end product of DNA replication is two identical daughter DNA molecules, each composed of one old and one new strand. The 'end-replication problem' causes a loss of DNA at the 5' end in linear chromosomes, which is partly addressed by telomeres.

The end product of replication is two identical daughter duplex DNA molecules. Each is comprised of one original (parental) and one new (daughter) DNA strand. This occurs due to DNA replication, which is essential for cell division and is facilitated by a host of enzymes and proteins. During this process, an RNA primer is required to initiate synthesis. Problems such as the end-replication problem affect the 5' ends of linear chromosomes, where RNA primers are removed, causing a gradual loss of DNA sequences with each cell division. Telomeres help mitigate this issue to an extent. The RNA primers used during replication are replaced with DNA nucleotides, but the primer at the 5' termini cannot be replaced, leading to progressively shorter DNA strands with successive replications.

Furthermore, in some organisms like bacteriophages, during replication, DNA can be produced in a concatameric form which is later cleaved to package a single genome inside the phage capsid. This unique replication method is important within the context of viral DNA replication.

PLEASE HELP!!!! 30 points for answering!!!!


1. How can researchers be sure they found PFC Gordon’s body?




2. Does Hyman’s team have the ability to do this same procedure with other unidentified soldiers and if so, what would they need to move forward?

Answers

Answer:

1. DNA verification.

2. Yes.

Explanation:

1. DNA is what makes any body who he is. These are the set of instructions given to any one by their father and mother. So the researchers processed the remains of those soldiers who were all buried, during the battle of Falaise Gap when Gordon's car was hit by German shell, and found that one of the body's remains were exactly match with Dordon's relation DNA.

2. Hyman's team have the ability to do this same procedure with other unidentified soldiers as long as any relatives in relation to those soldiers are available to verify the DNA samples from.

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a chain saw rental for $12 a day. A sharpening fee of $5 is charged for each rental. write an equation for the number of dollars (y) that must be paid to rent a chain for x days. How many days can one rent a chain saw for a cost of $125? Timur was making a presentation regarding how attackers break passwords. His presentation demonstrated the attack technique that is the slowest yet most thorough attack that is used against passwords. Which of these password attacks did he demonstrate? A. Dictionary attack B. Hybrid attack C. Custom attack D. Brute force attack A pole that is 3.5 m tall casts a shadow that is 1.66 m long. At the same time, a nearby building casts a shadow that is 4.5 m long. How tall is the building? The average cost per month of a 2-bedroom apartment in Grayson was $625 last year.This year,the average cost is $650.What is the percent of increase from late year? 1. A dining hall had a total of 25 tables-some long rectangular tables and some roundones. Long tables can seat 8 people. Round tables can seat 6 people. On a busyevening, all 190 seats at the tables are occupied.How many long tables, x, and how many round tables, y, are there? Coastal California is famous for fog and smog (fog mixed with smoke). Why is the California coast foggy/smoggy, whereas Houston, Texas, which is at similar latitude, might get occasional smog from too many cars, but fog is relatively rare?A) Warm air in Texas rises to make clouds and not fog, whereas in California cold water from the ocean mixes with warm water from the land to generate fog.B) The ocean is warm off the Texas coast, but a cold current running offshore California generates fog when the cold, moist air is drawn ashore by a sea breeze.C) Cold currents along the Texas coast inhibit fog, whereas the ocean is warm off California.D) There isn't really any fog; it is all just smog from too many How many grams of hydrogen must react if the reaction needs to produce 31.75 g of NH3 Determine the area under the standard normal curve that lies to the left of (a) Upper Z equals negative 1.45 commaZ=1.45, (b) Upper Z equals 0.63Z=0.63, (c) Upper Z equals 1.48Z=1.48, and(d) Upper Z equals negative 1.37Z=1.37. LOADING... Click the icon to view a table of areas under the normal curve. (a) The area to the left of Zequals=negative 1.451.45 is nothing. (Round to four decimal places as needed.) What do the elements in the oxygen family (Group 16) have in common?OA. They are all gases.OB. They tend not to react with other elements.OC. They are all nonmetals.OD. They tend to react in similar ways. Sarah Buchanan is a nursing student who is doing a home health care nursing clinical. She is assigned to visit Ted Wall, a 50-year-old black man who is in the late stage of AIDS. His wife Sheri is also 50 years old and is raising their daughters two children who are 3 and 5 years of age. Sheri does not work outside the home. Ted is receiving Social Security benefits. The mother of the children is in jail for dealing drugs. The childrens father has not been involved with them at all. Sarah determines that this is an example of what type of family? eligible voters can vote for all of the following exceptA. president and vice-presidentB. electors in the electoral collegeC. senatorsD. members of congress(please help me it is 4 am i have been up for ever on this dumb school work) Which thesis does Julio present effectively?The Grimms' fairy tales are well-loved children'sstoriesMany folk tales are not happy children's stories butdark, realistic talesAll folk tales are dark realistic talesThe Grimms' fairy tales we read now are the mostrealistic versions List food items appropriate for a four-year-old and explain why they are nutritionally adequate and appealing 9. What is one of the themes of Young Goodman Brown? (1 point)A. Wisdom goes hand-in-hand with both happiness and sadnessB. People can lose their faith when confronted with hypocrisy.C. It is impossible for men to be good in the real world.D. If you would be happy, practice patience. 11. In 2010, the population in the United States will be about 3.09x10'. Spending for health care will beabout $8754 per person. About bow much will the US spend on health care in 2010? Write in scientificnotation and round to the ncarest hundredths. Despite her parents' poverty, Dusty earned a PhD at a prestigious university. Dusty credits her educational success to hardiness and resilience and blames her inability to manage money on the culture of poverty in which she was raised. Dusty reflects an attributional bias known as the________. Mary and Lamar establish a tutoring service at a local mall. They tutor college students in math and English. They charge $40 per hour for tutoring. In the month of January they charged for 200 tutoring hours. The expenses of their business are given in the table below. ExpenseAmount/Month Rent of Space$4000 Electricity$325 Advertising$375 Using the formula Profit = $40(number of hours) (expenses) , calculate their profit for the month of January. Anthropological research reveals that most ethnic groups and nations are recent historical creations, our connection to people within these groups is relatively new, and our shared traditions are recently invented. In addition, most members will never meet each other. This allows us to observe that most nations today are what?a.imagined communitiesb.genocidalc.diasporasd.ancient tribes Caroline loves to read and enjoys looking up the meanings of words she does not know. In school, her teacher promises a gold star to students each time they learn a new word. The teacher's behavior is most likely to undermine __________.a. latent learning.b. intrinsic motivation.c. spontaneous recovery.d. generalization. Carol wants to make a quilt using a scale of 1.5 inches=2 feet. Her scale drawing is 7.5 inches by 10.5 inches. What is the area of the actual quilt?_[blank]_ square feet I will mark the first one to answer my question brainleist