The endosymbiosis theory is supported by all BUT one piece of modern-day evidence. That is both organelles are capable of living independently. Although both organelles contain RNA, DNA, and ribosomes, if extracted from eukaryotic cells, they are not capable of living independently.
A tall pea plant (Tt) is crossbred with a short pea plant (tt). The following Punnett square shows the separated alleles for two pea plants.
Which of the following shows the correct match of the box numbers and the genotype of the offspring?
1 = Tt; 2 = tt; 3 = Tt; 4 = tt
1 = Tt; 2 = Tt; 3 = Tt; 4 = Tt
1 = Tt; 2 = Tt; 3 = tt; 4 = tt
1 = Tt; 2 = tt; 3 = tt; 4 = tt
The process of making rna from a dna template is called ________.
With the exception of sensory neurons, the role of a neuron's ________ is to carry information toward the cell body, whereas the role of the _____ is to carry information away from the cell body.
Answer:
1st:Dendrites 2nd:Axon
Explanation:
which of the cell's organelles releases energy stored in food?
A.mitochondria
B.chloroplasts
C.lysosomes
D.endoplasmic reticulum
Mitochondria releases energy stored in food. Correct option is A.
Mitochondria are the cell's organelles responsible for releasing energy stored in food. They are often referred to as the "powerhouses" of the cell. Through a process called cellular respiration, mitochondria convert nutrients from food, such as glucose, into usable energy in the form of adenosine triphosphate (ATP). This energy is essential for various cellular activities and functions. Mitochondria are found in most eukaryotic cells, including animal and plant cells.
The primary function of mitochondria is to generate energy in the form of ATP through a process called cellular respiration. This process involves breaking down organic molecules, such as glucose, obtained from food to release energy. Mitochondria act as the site for several interconnected reactions that occur in different stages: glycolysis, the citric acid cycle (also known as the Krebs cycle), and the electron transport chain.
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10. A(n) _________________________ sequence can be compared between two different organisms to determine their relationship.
11. A structure that had a function in the past like the wings of an ostrich but do not have a function now are called _______________________________.
2.16 Unit Test: Evolution - Part 1
Answer:
*see docs*
Explanation:
*i took the test and did the Practice activity*
In your own words, explain how the changes in the density of ocean water causes movement of ocean water from one place to another.
Answer: The density of water plays a very significant role in the movement of ocean water. This density sometimes shows variations, that are caused by the factors such as temperature as well as the salinity.
The density of a water is directly proportional to its salinity and inversely proportional to its temperature. This means that, as the temperature decreases density increases and as the salinity increases density increases.
So this two factors togetherly, are responsible for the ocean water circulation due to the affect of coriolis force and the surface wind, known as the thermohaline circulation.
This ocean water when flows, carries heat from one place to another.
Some traits are determined by more than two alleles. Human skin color is determined by three different genes, resulting in sixty four possible skin tones. If a father with skin tone aabbcc has children with a mother whose genotype is AABBCC, what would be the genotype of their children? A) AABBCC B) AaBbCc C) aabbcc D) aaAAbbBBccCC
Answer:
(B). AaBbCc.
Explanation:
In humans, each somatic or body cell has two sets of chromosomes, as one set comes from mother and one sets comes from father. Each gene shows two or more forms, known as alleles.
If the genotype of mother is AABBCC and the genotype of father is aabbcc, genotype of their children would be AaBbCc as each parent will transfer to the offspring as shown below:
Parents: AABBCC aabbcc
(mother) (father)
↓ ↓
Gametes: ABC x abc
↓
Genotype of offspring: AaBbCc
Thus, the correct answer is option (B).
How are mitosis and meiosis similar A.) they both produce gametes B.) they both involve duplicating chromosomes C.) they both produce retreads D.) they both increase the chromosome number
The prophase, metaphase, anaphase, and telophase stages are common for both cycles. chromosomes synthesis occurs during both cycles, hence option B is correct.
What is mitosis and meiosis?Cell division occurs during meiosis as well as mitosis. The M-phase of the cell cycle is when both processes take place.
Meiosis creates cells that are genetically distinct from the parent and have half as much DNA as mitosis, which divides a single "parent" cell into two genetically identical "daughter" cells.
The majority of cells in the body undergo mitosis on a regular basis, although some do so more often than others.
One cycle of DNA replication precedes both meiosis and mitosis, but meiosis also involves two nuclear divisions. Meiosis produces four haploid daughter cells, each of which has a unique genetic makeup.
Therefore, mitosis and meiosis both involve duplicating chromosomes, hence option B is correct.
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Diseases can be caused by inherited disorders, exposure to toxic substances, organ malfunction and certain personal behaviors. Choose two of the above and for each one give a specific example of an associated disease using the lines below:
Answer:
Organ malfunction and certain personal behaviors
Explanation:
Personal behaviors: Alcoholism is considered a disease by the WHO (World Health Organization). It is characterized by constant, uncontrolled and progressive use of alcoholic beverages can seriously compromise the proper functioning of the body, leading to irreversible consequences. The alcohol-dependent person not only harms his own life, but also affects his family, friends and co-workers.Organ malfunction: Kidney failure is the condition in which the kidneys lose their ability to perform their basic functions, including filtering blood to eliminate harmful substances in the body and maintaining the balance of electrolytes in the body. Chronic kidney disease is estimated to reach 10% of the world's population, affecting people of all ages, but especially the elderly.Why is the percentage of food eaten a good number to use?explain
To understand that you have to balance each food you intake in your body; Balancing your food is not only used to make you stay fit but it can enhance your mental and physical health. Nutrition is vital for your body and all of its systems to function properly, by having good nutrition it will help you maintain a healthy weight, reduce body fat, provide your body with energy, promote good sleep and generally make you feel better.
With the use of proper diet, you will go on to your everyday routine without feeling uncomfortable. Eating a diet rich in some vegetables and fruits as part of an overall healthy diet may protect against certain types of cancers. Diets rich in foods containing fiber, such as some vegetables and fruits, may reduce the risk of heart disease, obesity, and type-2 diabetes.
The percentage of food eaten provides valuable insights into energy conversion, nutrition, and socio-economic trends. It details how much of our food energy is converted into work, thermal energy, or stored fat, aids in making healthy food decisions, and reflects socio-economic shifts in food consumption.
Explanation:The percentage of food eaten is an important number to use as it helps us understand the energy conversion and nutritional value of what we consume. It is a ratio that reveals that very little of the energy released in the consumption of food is used to do work. In fact, less than 10% of our food energy intake is used to do work while more than 90% gets converted to thermal energy or stored as chemical energy in fat. Moreover, knowing the percentage can be beneficial when making healthy food choices. Foods high in fiber and proteins are considered healthier as their nutrient density is high.
Furthermore, such information contributes valuable insights into socio-economic trends. For example, as income rises, people demand more calories from fats and proteins and fewer from carbohydrates. This has implications for global food production, obesity rates, and environmental consequences. Thus, the percentage of food eaten serves as a significant figure in understanding individual and community health, and global food economics.
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Alana's diet contained 2150 kcal, with grams of protein (is this plenty for her?), 360 grams of carbohydrate, answers
Final answer:
Alana's protein intake is adequate if it ranges from 54 to 161 grams for a 2150 kcal diet, aligning with the AMDR of 10 to 30 percent of caloric intake. Her carbohydrate intake is slightly above the AMDR recommendation, which suggests a range of 242 to 349 grams for her caloric level. It's critical to personalize dietary recommendations based on individual health goals and activity levels.
Explanation:
The question seeks to evaluate if 2150 kcal with an unspecified amount of protein is sufficient for Alana's dietary needs. To determine the adequacy of protein intake, we refer to recommended dietary guidelines. The Acceptable Macronutrient Distribution Range (AMDR) for protein is 10 to 30 percent of daily calories. Using the higher end of this range for active individuals (such as endurance athletes), and assuming Alana falls into this category, an intake of 93 to 108 grams of protein would be appropriate on a 3000-kilocalorie diet, making up approximately 12 to 14 percent of daily calories. If Alana's diet contains 2150 kcal, approximately 54 to 161 grams of protein would align with the AMDR, based on 10 to 30 percent of her caloric intake.
For carbohydrates, the AMDR is 45 to 65 percent of daily calories, equating to roughly 242 to 349 grams for a 2150-kilocalorie diet. Alana's current intake of 360 grams of carbohydrate slightly exceeds this range, suggesting that while her carbohydrate intake may be sufficient or somewhat high, it is crucial to emphasize carbohydrates high in fiber for the majority of intake.
To assess the overall balance of Alana's diet, it's essential to consider her specific health goals, activity levels, and any dietary restrictions she may have. Consulting a dietician or nutritionist would provide personalized guidance.
what is a diagram that shows homologous chromosome pairs?
A karyotype is a diagram that shows homologous chromosome pairs by arranging chromosomes according to length. It allows for the visualization of different chromosomes and their homologous pairs. In humans, a female somatic cell has 23 pairs of homologous chromosomes.
Explanation:A diagram that shows homologous chromosome pairs is called a karyotype. A karyotype is an arrangement of chromosomes that have been removed from a cell and arranged according to length. It allows for the visualization of homologous chromosome pairs and can be created using techniques such as staining and fluorescent dyes. In humans, a female somatic cell has 23 pairs of homologous chromosomes.
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A karyogram is a diagram that shows the homologous chromosome pairs, which are important during cell division and are key to genetic diversity.
A diagram that shows homologous chromosome pairs is known as a karyogram. This depiction typically includes all the chromosomes within a cell, organized into their respective homologous pairs.
For example, a normal human diploid somatic cell would be shown as having 46 chromosomes, forming 23 pairs, with each pair consisting of one chromosome from each parent.
Figure 2 displays homologous chromosomes as red and blue colors, indicating that the two chromosomes of a pair are inherited from different parents.
Homologous chromosomes are also observed during various stages of cell division. For instance, during Prophase I of meiosis.
They undergo synapsis where they pair up, and crossing over can occur, leading to genetic recombination. This process is crucial for genetic diversity in sexually reproducing organisms.
A medium-temperature star like the Sun would most likely emit its most intense radiation as _____.
ultraviolet light
visible light
microwaves
radio waves
Answer:
Ultraviolet light
Explanation:
The pancreas is a human body organ that produces digestive enzymes and two very important hormones: insulin and glucagon. These two hormones work together to regulate the level of the sugar glucose in the bloodstream. If glucose levels in the bloodstream are too low, the pancreas secretes glucagon which causes the glucose level to increase. If blood glucose levels are too high, the hormone insulin will lower the glucose level. If a person has just eaten a meal containing a large amount of sugars and other carbohydrates, which statement BEST describes how the pancreas will respond? A) The amount of insulin produced by the pancreas will increase to reduce the amount of glucose in the bloodstream. B) The amount of insulin produced by the pancreas will decrease to allow the glucose levels in the blood to decrease. C) The amount of glucagon produced by the pancreas will decrease so that the amount of glucose in the bloodstream may increase. D) The amount of glucagon produced by the pancreas will increase to allow the sugars in the digestive tract to enter the bloodstream.
After a meal high in sugars and carbohydrates, the pancreas responds by increasing the production of insulin to lower the elevated blood glucose levels.
Explanation:If a person has just eaten a meal containing a large amount of sugars and other carbohydrates, the statement that BEST describes how the pancreas will respond is: A) The amount of insulin produced by the pancreas will increase to reduce the amount of glucose in the bloodstream. When blood glucose levels are high, the pancreatic beta cells secrete insulin, which facilitates the uptake of glucose by the body's cells and the storage of glucose as glycogen in the liver and muscles.
This response is a part of the body's negative feedback mechanism to maintain homeostasis of blood glucose levels. Thus, rather than decreasing the production of insulin, the pancreas increases it to help lower the elevated blood glucose levels after a carbohydrate-rich meal.
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An 8-hour postpartum client complains of abdominal cramping and feeling dizzy. during the assessment the nurse notes the client's fundus is soft, deviated to the right and 4 fingerbreadths above the umbilicus, and there is moderate rubra. what would the nurse's priority actions be
The nurse priority action should be to stop the bleeding and ensure
rupturing of vital organs don't occur.
What is Postpartum?This is the period after the birth of a child which is usually common with
females. This period can be characterized by complications as a result.
The nurse observing that the fundus is soft with a moderate rubra means
there is internal bleeding which needs to be ceased to prevent the death
of the client.
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What are the disadvantages of a flatworms digestive system having only one opening?
Which section of the brain controls language
Left Hemisphere
The brain is an organ that control all the functions of the body which includes movement of the arms and legs, memory and speech, thoughts and function of many organs in the body. The left hemisphere is the part of the brain that is responsible for the control of speech, arithmetic and writing and comprehension.
Imagine that a strand of DNA has the following sequence of bases: AAGTTCGTCATC. What sequence of bases will the complementary strand of DNA have?
Why are bacteria needed in the nitrogen cycle
The bacteria is prokaryote and these bacteria are important because they help the other organism such as plant by fixing nitrogen in environment. Bacteria transform gaseous nitrogen into ammonia that is used by plants.
What is nitrogen cycle?The nitrogen life cycle is referred to as sequence in which nitrogen in the atmosphere is passed into the soil and life forms, and then released back into the atmosphere.
Although nitrogen is present abundant in the atmosphere, most organisms cannot use it in initial form. Nitrogen cannot be formed by living organisms, so it must be constantly recycled.
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Competitive ______ occurs when the competing species is no longer present.
A. exclusion
B. release
C. expulsion
D. none of the above
The correct answer is B. release
Explanation:
In ecosystems, competition occurs as different organisms or species need the same limited resources such as water, territory, food or shelter and therefore compete for it, this includes competition within species and also between them. This type of interaction often leads to the disappearance of one of the organism or species interacting, which is regulated by the competitive exclusion principle that states to species competing cannot coexist. Additionally, once one of the competing species is no longer present competitive release occurs, this implies the competition ends and the remaining species can access the resources more fully. According to this, competitive release occurs when the competing species is no longer present.
What type of microscope is used to show the fine detail of cell organelles, as well as the spindle fibers and chromosomes as seen during anaphase?
What would be the magnification of a specimen viewed with a compound light microscope that has an objective power 40 X in ocular lens power of 10 X
If a woman with type o blood and a man with type ab blood have children, what are the children possible genotypes? /ai and /bi.
Final answer:
A woman with type O blood and a man with type AB blood can have children with either type A or type B blood. The genotypes would be IAi for type A and IBi for type B. A type O individual can be the child of type A and type B parents if both carry the recessive i allele.
Explanation:
If a woman with type O blood (genotype ii) and a man with type AB blood have children, the children's possible genotypes would be genotype IAi (type A blood) or genotype IBi (type B blood). This is because the woman can only contribute the i allele, while the man can contribute either the IA or the IB allele, leading to these two genotypes.
Regarding the question of whether an individual with type O blood could be a child of parents with blood types A and B, the answer is yes. If both parents are heterozygous (genotypes IAi and IBi), there is a possibility of the child inheriting the i allele from each parent, resulting in the ii genotype, which is type O.
When discussing blood donations, a woman with type O blood is a universal donor and can donate to her husband with type AB blood, but not vice versa as AB blood contains both A and B antigens.
Which level of organization in the classification system is directly above the class level?
Domain
Family
Kingdom
Phylum
Answer:
Phylum
Explanation:
In the biological classification system, categories are used to group organisms according to their similarities. The basic category is species, which is defined as similar beings who are able to reproduce naturally and generate fertile descendants.
Animals of the same species are grouped into another category, the genus. All who belong to the same genre are grouped into families, which are grouped into orders, which in turn come together in classes, assembled in phyla, and finally we have the kingdoms. Kingdoms are therefore the last category in the hierarchy and subdivided into the most basic category. So we have:
Kingdom ⇒ Phylum ⇒ Class ⇒ Order ⇒ Family ⇒ Gender ⇒ Species
From this we can conclude that the level of organization in the classification system that is directly above the level of "class" is the "phylum".
Answer: Kingdom
Explanation: In this system of classification, kingdom is always ranked the highest followed by division, class, order, family, genus, and species.
and i got it right on my test
Evolution theory is based on the supposition that energy plus matter plus natural chemical reactions are sufficient to ultimately produce functioning interrelated complex systems. True False
SOS:
The answer is TRUE!!!!
Hope this helps!!
what is typical of cell reproduction when normal cells are reproduced in a Petri dish from a tissue culture? check all that apply
1.cells reproduce only when there is room in the Petri dish
2.cells reproduce one layer thick and then stop reproducing
3.cells undergo unlimited reproduction by mitosis
4.when a cell dies or is damaged, a new one is created to fill the empty spot
Explain how flowering and non flowering plants are classified into major groups
Plants are classified into non-vascular, vascular, gymnosperms, and angiosperms. Flowering plants (angiosperms) are divided into monocots and dicots, with details about their life cycle and structure. Non-flowering plants (gymnosperms) do not produce flowers but have seeds.
Plants are classified into major groups based on their characteristics and reproductive structures. Here is how flowering and non-flowering plants are classified:
Classifications of Plants
Seedless Non-Vascular Plants: These include bryophytes like mosses and liverworts. They do not have vascular tissues and reproduce via spores.Seedless Vascular Plants: These include ferns and horsetails, which have vascular tissues but reproduce via spores rather than seeds.Gymnosperms: Non-flowering plants that produce seeds not enclosed in an ovary. Examples include conifers like pine trees.Angiosperms: Flowering plants that produce seeds enclosed within an ovary. Angiosperms are classified further into monocots and dicots.Groups Within Angiosperms
Monocots: These plants form a single cotyledon (seed leaf). Examples include grasses, lilies, and irises. They typically have parallel leaf venation and floral parts in multiples of three.Dicots: These plants form two cotyledons. Examples include roses, sunflowers, and oak trees. They typically have net-like leaf venation and floral parts in multiples of four or five.Basal Angiosperms: These are primitive flowering plants that diverge early from other angiosperms. Examples include magnolias and water lilies.Cathy read about whales and learned that the average length of a blue whale is 80 feet. She also read that theu can grow to be 94 feet long. Cathy wondered if the length of the blue whale is genetic. If two whales of maximum length mated, the selection in this case would be ____
identify the components involved in transcription, translation, and protein modification.
Answer:
DNA helix,vesicleproteinsingle-stranded
RNAmodified,endoplasmic reticulum,ribosome,Golgi apparatus,protein released
from vesicle,modified
protein,transport
vesicle,protein,polymerase
Explanation: right too left
Look at the branching tree diagram below.
Which group of organisms evolved after dogs?
Answer:
just marsupials
Explanation:
Answer:marsupial
Explanation: