Answer:
Explanation:
you could do Water's Attraction to Other Polar Molecules.
Cohesion, otherwise known as water's attraction to other water molecules, is one of the big properties of water. Water's polarity lends it to be attracted to other water molecules. The hydrogen bonds in water hold other water molecules together. Due to water's cohesiveness:
Liquid water has surface tension. This allows for insects, such as Water Striders, to walk on water.
Water is a liquid at moderate temperatures, and not a gas.
Using an eye dropper and a coin, you can slowly keep adding water to the coin and you will see cohesion.
The water molecules will stick together and form a dome over the coin. Keep adding drops until the drop breaks and spills off of the coin. This is caused by gravity overcoming the force of cohesion.
Objective: Investigate how the property of cohesion in water affects the movement of water in plants.
Hypothesis: If the property of cohesion in water is strong, then water movement in plants will be efficient.
Variables:
Independent Variable: Presence of cohesive water.
Dependent Variable: Water movement in plants.
Controlled Variables: Plant type, light, temperature, soil type, water amount.
Materials:
Celery stalks with leaves
Food coloring
Water
Clear containers
Procedure:
Fill containers with water and add different food coloring to each.
Place celery stalks in containers, ensuring the cut end is submerged.
Observe and record changes in water level and color in the celery over 24 hours.
Data and Observations: Present data on water levels, color changes, and plant appearance in a table and graph.
Conclusion:
Hypothesis confirmed: Cohesion in water allows efficient movement in plants. Water visibly traveled up celery stems due to cohesion and adhesion forces.
Reflection:
Hypothesis confirmed due to observable water movement. Changes: Use various plant types, liquids, or temperature ranges for broader insights.
Real-world Applications:
Cohesion aids water transport in trees, enabling nutrients to move from roots to leaves, supporting photosynthesis, growth, and overall plant health.
Safety Notes:
Handle food coloring carefully to avoid staining. Use caution when cutting celery stalks to prevent injuries.
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A molecule of a complex carbohydrate is made of 12 carbon atoms. Calculate the numbers of hydrogen and oxygen atoms in the molecule.
In a complex carbohydrate molecule, the ratio of carbon to hydrogen to oxygen is 1:2:1. Therefore, if there are 12 carbon atoms, there will be 24 hydrogen atoms and 12 oxygen atoms.
Explanation:
Given that carbohydrates can be represented by the stoichiometric formula (CH₂O)n, where n is the number of carbons in the molecule, the ratio of carbon to hydrogen to oxygen in carbohydrate molecules is 1:2:1. Thus, if a molecule of a complex carbohydrate is made of 12 carbon atoms, the number of hydrogen atoms will be 2*12 = 24, and the number of oxygen atoms will be 1*12 = 12. This is because for every one carbon atom, there are two hydrogen atoms and one oxygen atom.
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What word would be used if the cell were from an animal?
The word would be used if the cell were from an animal is prokaryote which is the term used for an animal cell.
What is a prokaryotic cell?The prokaryotic cell has been defined as a cell which has one that lacks a true nucleus and membrane-bound organelles. The prokaryotic cell is the foundation of organisms in the domains Bacteria and Archaea.
In other hand the eukaryotic cells have a separate organelle named nucleus (plural: nuclei) which is a double membranous structure meant for the storage of genetic material i.e. chromosomes (DNA). Prokaryotes on the other hand have an irregularly shaped structure named nucleoid instead of nucleus.
All the genetic material of the prokaryotes is within the nucleoid. Unlike nucleus, nucleoid does not have any nuclear membrane & it is spread in the cytosol freely. Eukaryotic cells have nuclei but prokaryotic cells do not have nuclei.
Therefore, The word would be used if the cell were from an animal is prokaryote which is the term used for an animal cell.
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The atomic mass of an element is equal to the:
atomic number
o number of protons
number of protons and neutrons
o mass of protons, neutrons, and electrons
The answer should be the third option "number of protons and neutrons." The atomic mass of a element is equal to the amount of protons, and neutrons added together in that element. So for example if we are trying to find the atomic mass of hydrogen you would add the total amount of protons and neutrons together to find it's mass although it doesn't equal the exact amount of it's mass but it's close.
Hope this helps.
Why is reproductive isolation required for speciation to occur? If populations can interbreed, they are considered one species. If populations can interbreed, they do not exchange genetic information. Reproductive isolation is not required for speciation because most different species can interbreed. Reproductive isolation is not required for speciation because species are not defined by reproduction.
Answer:
A. If populations can interbreed, they are considered one species.
Explanation:
The organisms of a species have the ability to interbreed with one another leading to the formation of an offspring. For speciation to occur, the organism have to get diverged and isolated.
In speciation, a hereditary species parts into at least two relative species that are hereditarily not quite the same as each other and can never again interbreed.
In Allopatric speciation, the species gets geographically parted from their parent and evolves accordingly while in sympatric speciation, evolution of species occur when it stays in the same place as their parent.
Answer:
A
Explanation:
a
Human population increased sharply during the _____ because of improvements in farming techniques.
A Hunter-gatherer period
B Agricultural revolution
C Period of prehistory
D Industrial Revolution
Human population increased sharply during the Agricultural Revolution because of improvements in farming techniques.
Answer: B. Agricultural Revolution
Explanation:
The Agricultural Revolution was a time of mechanical improvement and expanded harvest efficiency that happened during the eighteenth and mid nineteenth hundreds of years in Europe.
Each significant development in agribusiness has enabled worldwide populace to increment. Early ranchers could settle down to a relentless nourishment supply.
Water system, the capacity to clear enormous swaths of land for cultivating productively, and the advancement of homestead machines controlled by non-renewable energy sources enabled individuals to develop more nourishment and transport it to where it was required.
The following significant stage in the development of the human populace was the Industrial Revolution, which began in the late 1700s.
Science is a form of inquiry because scientists trying to understand the world around them start by a forming conclusions. b collecting data. c asking questions. d designing experiments.
Answer:
D. Designing experiments
Explanation:
Scientists get understanding of the world by performing experiments. Direct conclusion without any data is considered as irrelevant. The scientists design the protocol of the experiment and performs it accordingly to get the data and then infer the result from it.
The experiments are designed on the basis of the hypothesis being stated. The hypothesis is validated by the experiments and has to be altered or withdrawn if the results do not support the hypothesis.
DNA is copied, in a process called______, so that a cell's DNA can be passed on to its daughter cells.
A. gene editing
B. replication
C. gene expression
D. recombination
Answer:
Replication
Explanation:
When DNA is copied the process is called replication since the DNA is being copied.
What is the process that puts carbon dioxide back into the air? Its on a crossword puzzle and its not carbon respiration or the carbon cycle.
"The process that puts carbon dioxide back into the air, other than carbon respiration or the carbon cycle, is known as ""decomposition.""
Decomposition is the breakdown of organic matter by decomposers such as bacteria and fungi. As these organisms consume the dead plant and animal material, they respire, releasing carbon dioxide back into the atmosphere. This process is a critical component of the carbon cycle, as it returns nutrients, including carbon, to the soil and atmosphere, making them available for reuse by plants and other organisms.
In the context of the carbon cycle, when plants and animals die, their bodies are broken down by decomposers. The carbon in their tissues, which was originally taken from the atmosphere through photosynthesis, is released back into the atmosphere as carbon dioxide during decomposition. This continuous cycling of carbon between the living and non-living components of the Earth is essential for maintaining the balance of carbon in our biosphere."
Explain how energy moves through a food chain and a food web.
Energy begins with the sun and is captured by plants via photosynthesis. It is then passed up through different levels of consumers in a food chain, from herbivores to carnivores. A food web shows a more complex, interconnected system of energy transfer, with energy lost as heat at each level.
Explanation:Energy in ecosystems is transferred through food chains and food webs. It all starts with energy from the sun, which is harnessed by producers (like plants) through the process of photosynthesis. These producers are consumed by primary consumers (herbivores), which in turn are consumed by secondary consumers (carnivores). Each layer of consumption represents a level in the food chain.
A food web, on the other hand, is a more complex representation of multiple food chains that intersect. These interconnections demonstrate how energy moves in a less linear, more interconnected way. The energy is lost as heat up the food chain or web, thus the higher the level, the less energy is available.
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Amino acids are processed by the liver.
Describe this process.
Regulation of amino acids
When amino acids are absorbed by liver cells a series of chemical reactions begins. ... The amine group is reduced to ammonia by the addition of a hydrogen atom. This process is called deamination. The non-nitrogenous portion of the molecule is converted to carbohydrates or fats.
Can someone fill in all the words
Energy conversion within an animal cell
would be severely limited by removal of the
cell's -
A) Mitochondria
B) Chloroplasts
C) Plastids
D) Lysosomes
!!ASAP!! Please !!ASAP!!
Somebody please help!! You don't have to do all of them but if you can please do!!
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How are each of the properties important to life?
------------------------------------------------------------------------------
-High specific heat
-Expansion upon freezing
-Versatility as a solvent
Specific heat means the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).. The specific heat of water is high (1 calorie/gm/°C). This property ensures slow heating of water; maintain constant temperature of living organisms and environment.
Expansion upon freezing is what causes ice to be less dense as a solid than as a liquid. This means that ice floats in liquid water. Hydrogen bonding is the source of this rare property. Water freezes when its molecules are no longer moving around enough to break their hydrogen bonds.even though it doesn't seem like a very important property, but the fitness of the environment would drastically change if water were less dense than ice. All of bodies of water would eventually freeze over if ice did sink, making life on Earth impossible.
Versatility as a solvent Water is called the "universal solvent" because it dissolves more substances than any other known liquid. This is important to every living thing on earth. It means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
A solution that causes a cell to swell because of osmosis.
Answer:
Hypotonic solution
Explanation:
A hypotonic solution causes a cell to swell due to osmosis. This happens because water molecules move from the solution, where there's a lower solute concentration, into the cell, where there's a higher solute concentration. However, if the cell swells too much, it can burst, a condition called osmotic lysis.
Explanation:A solution that causes a cell to swell due to osmosis is called a hypotonic solution. Osmosis is the passive movement of water molecules, across a semi-permeable membrane, from an area of lower solute concentration to an area of higher solute concentration. In the case of a cell in a hypotonic solution, the concentration of solutes is higher inside the cell than in the surrounding solution. As a result, water moves into the cell, causing it to swell.
This process is an essential part of biology and it's vital for many biological processes, from the transport of nutrients to the balancing of water levels in organisms. Care must be taken, though, as too much swelling can lead to a condition called osmotic lysis, where the cell can burst.
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Which of the following happens when unbalanced forces act on an object
I need this ASAP answers
The object remains stationary
The object moves with the same velocity
The object moves in the direction of the stronger force
The objects feed and direction of motion remain unchanged
Answer:
The object moves in the direction of the stronger force
Answer:
The object move in the direction of the stronger force
:3 Hope this Helps
What is the monomer of carbohydrates?
Answer: Monosacchardes
Explanation:
Is a tomato plant a single cell or multicellular? Explain with strong evidence It is for my science class
Answer: Tomato plant is a multicellular organism.
Explanation: A multicellular is a organism composed by many types of cells or cell lines. A tomato plant is composed not only by million of cells but by many types of them in the different tissues and organs, for example, leaves have epidermic cells that protect them, stomata cells for gas exchange, chlorenchyme cells that have chloroplasts to do photosynthesis, phloem and xylem cells to transport fluids, etc.
Cells transport molecules into the cell in many different ways. One method is through endocytosis, shown in the model. In endocytosis, the cell brings specific molecules it needs, including fluid, into the cell. Why does the structure of the plasma membrane make this type of transport necessary for fluids?
Answer:
This is because fluids have a polar nature, so they couldn´t cross the lipidic bilayer that constitutes the plasma membrane
Explanation:
Plasma membranes are contituted by lipid bilayers. These kind of compounds are hidrophobic (they reject water) and don´t permit the freely passage of hidriphilic molecules that can disolve in water, constituing fluids. Because of that cells developed transport mechanism like endocytosis.
Answer:
While the heads of the phospholipid structure attract water, the tails are hydrophobic. The model shows how the hydrophilic section folds around the fluid molecules to bring them into the cell so they don’t need to pass through the hydrophobic tails.
Complimentary DNA for atgaaccattcagtatgg
Answer:
tacttggtaagtcatacc
Explanation:
Since A (adenine) is complementary (bonds) only with T (thymine) and vice versa; and C (cytosine) with G (guanine).
What is an estuary? How and why does the salinity of estuaries vary?
Answer:
Salinity in an estuary varies according to one's location in the estuary, the daily tides, and the volume of fresh water flowing into the estuary. In estuaries, salinity levels are generally highest near the mouth of a river where the ocean water enters, and lowest upstream where freshwater flows in.
Explanation:
Answer:
An estuary can be defined as partially enclosed coastal body of the brackish water in which one or more than one rivers flows into it.
It basically forms a transition zone between the river and maritime environments which is known as ecotone.
The salinity of the estuary depends on the location of the estuary. Salinity level in the estuary declines during the spring season and when the snow melts and the rain increases.
The level of the salinity increases during the time of summer because the level of evaporation increases.
what is the volume of a 3m
cube ?
Answer:
27m^3
Explanation:
Make sure you add the three for cubic meters and you will get full credit.
You do 3 times 3 which is 9 then times 3 once more.
It gets you 27
Answer:
27
Explanation:
You MULTIPLE the 3 three times because you are looking for the CUBE
How is a polar bear adapted to living in cold polar areas?
Answer:
How has a polar bear adapted to its Arctic environment? Their white fur helps them blend in with the snow and ice. A polar bear has a layer of fat under its skin which helps it stay warm. It also has a thick layer of fur.Inhabiting the ice and sea of the Arctic, polar bears are well-equipped for survival in a harsh environment. Two coats of fur and a thick layer of blubber help insulate the polar bear's body from the cold, keeping its temperature at an even 37° C (98.6° F).
Polar bears have thick fur, a layer of blubber, and a white coat that helps them survive in polar regions. These features provide insulation, store energy, and offer camouflage. Their ability to generate heat further aids in maintaining their internal temperature.
Adaptations of Polar Bears to Cold Climates
Polar bears (Ursus maritimus) have several adaptations that allow them to thrive in extremely cold polar areas. These adaptations include:
Thick fur: Polar bears have a dense layer of fur that traps heat close to their bodies, providing insulation against the cold. The outer layer of fur is waterproof, preventing them from getting wet and losing body heat.Layer of blubber: Underneath their skin, polar bears have a thick layer of fat known as blubber. This blubber not only stores energy but also provides additional insulation to keep them warm in the icy environment.Heat generation: Like all mammals, polar bears generate heat through metabolic processes to maintain a stable internal temperature, essential for surviving in cold climates.White fur: Their white fur helps them blend into their snowy surroundings, serving as camouflage to protect them from predators and assist in hunting prey.Thanks to these incredible adaptations, polar bears are well-equipped to survive and thrive in their Arctic ecosystem.
Pros and cons of saving endangered species
Answer:
The conservation of endangered species is important for humans as well. A well-balanced ecosystem purifies the environment, giving us clean air to breathe, a healthy water system to support diverse marine life, and arable land for agricultural production.
Explanation:
The health of an ecosystem is maintained by its plants and animals. When species become endangered, it is a sign of an ecosystem's imbalance. This balance is difficult to maintain: the loss of one species often triggers the loss of others. ... By saving endangered species, we are ultimately saving ourselves.
The conservation of endangered species is important for maintaining biodiversity and ecosystem balance, with public support enabling increased conservation efforts. However, there are concerns about the allocation of resources, effects on ecosystems, ethical considerations, and public perception related to de-extinction efforts. Finding a balance in conservation resources is essential to ensure the most effective protection of biodiversity.
The conservation of endangered species serves crucial roles in maintaining biodiversity and the balance of ecosystems. Efforts to protect endangered species with large territories, like the northern spotted owl, Strix occidentalis caurina, often result in the protection of other species within the same ecosystem, improving the efficiency of conservation resources. Additionally, certain ecosystems with high concentrations of endangered species, such as the Florida scrub or Hawaiian rainforests, benefit almost equivalently from species-oriented conservation and ecosystem conservation efforts. Public support for protecting charismatic species like the whooping crane (Grus americana), the giant panda (Ailurapoda melanoleuca), and the golden lion tamarin (Leontopithacus rosalia) is high, which can translate to increased funding and attention to conservation efforts.
However, there are cons to focus exclusively on endangered species conservation. The argument against de-extinction efforts is that they are expensive, technically challenging, and may divert necessary resources from protecting species currently facing extinction. Concerns also arise about the potential impact of resurrected species on ecosystems, as they may not fulfil the same roles or exhibit the same behaviours as their pre-extinct counterparts, possibly introducing new threats. Ethical questions surround the concept of humans playing god with the natural order. The potential for public desensitization to the extinction crisis is another critique: if people believe that extinct species can simply be revived, the urgency to protect species might diminish.
In conclusion, while the conservation of endangered species has many benefits, including ecosystem protection, there are debates regarding resource allocation, especially concerning de-extinction efforts. Conservationists face the challenge of finding a balance between preserving endangered species and ensuring the efforts do not outweigh the potential benefits to biodiversity and ecosystems.
Can individuals organism envolve?
Individual organisms do not evolve; instead, evolution is a process that occurs across generations within a population. While individual organisms can adapt to their environment, these adaptations do not equate to evolution. Examples of evolution include the genetic changes leading from pre-humans to modern humans.
Can an individual organism evolve? No, an individual organism itself cannot evolve. Evolution is a process that occurs over many generations within a population, not within the lifespan of a single organism.
When we talk about evolution, we refer to the genetic changes that accumulate in a population over time. These changes can lead to new species, but they do not alter the genetic makeup of an individual once it is born.
Examples of Evolution
For instance, consider the transformation from pre-humans to modern humans (Homo sapiens). This was not a change that occurred in a single individual but rather a series of genetic adaptations across countless generations.
Adaptations vs. Evolution
It's important to differentiate between an organism adapting to its environment and evolution. An individual organism can adapt by developing better skills for survival, but this adaptation is not the same as evolution. Evolution requires the genetic changes that happen across multiple generations, leading to the emergence of new species.
Organisms interact with their environment, which can influence their success and survival.
Populations, not individuals, evolve over time through the accumulation of genetic changes.
Examples of evolution include the transition from dinosaurs to birds and pre-humans to modern humans.
What strand of mRNA would be produced from the strand of DNA shown
below?
GCATTA
O A. GCATTA
O B. CGT AAT
O C. CGT UUT
O D. CGU AAU
Answer:
D
Explanation:
Since Adenine (A) pairs with Uracil (U) in RNA, Thymine(T) pairs with Adenine but Adenine doesn't pair with Thymine in RNA and Guanine(G) and Cytosine(C) then the nitrogenous pairs would be like this.
GCATTA
CGUAAU
The corresponding mRNA strand would be: CGUAAU. Therefore, option (D) is correct.
What is mRNA?mRNA stands for messenger RNA. It is a type of RNA molecule that carries genetic information from DNA to the ribosomes, where it serves as a template for protein synthesis. mRNA is transcribed from DNA during the process of gene expression and is crucial for protein production in cells.
To determine the strand of mRNA produced from a given strand of DNA, we need to apply the complementary base pairing rules. In DNA, the bases are adenine (A), thymine (T), cytosine (C), and guanine (G). In RNA, however, thymine is replaced by uracil (U). The complementary base pairs are A-T and G-C in DNA, and A-U and G-C in RNA.
Given the DNA strand: GCATTA
To transcribe it into mRNA, we replace each DNA base with its complementary RNA base:
G -> C
C -> G
A -> U
T -> A
T -> A
Therefore, the corresponding mRNA strand would be: CGUAAU
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“Energy needed by the body is transformed in the cells” True or false?
Answer:
True!
Explanation:
During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP. :)
Answer:
Cells do not use the energy from oxidation reactions as soon as it is released. Instead, they convert it into small, energy-rich molecules such as ATP and nicotinamide adenine dinucleotide (NADH)
Explanation:
Which option accurately describes scientific theories?
(Select all that apply.)
A)have withstood the testing of a number of scientists through a number of investigations
B)are testable questions that can be investigated through experimentation
C)have developed from the arguments that have verified certain hypotheses
D)are descriptions of phenomena that can be observed to consistently happen over and over again
it would be a,c hope i helped
Answer:
C)have developed from the arguments that have verified certain hypotheses
D)are descriptions of phenomena that can be observed to consistently happen over and over again
Explanation:
Scientific theory is the set of knowledge that seeks to explain, with a high degree of accuracy, comprehensive phenomena of nature, that is, it is different from the meaning of the word "theory" used in everyday life, when we say that something "is just a theory ”in the sense that it is mere speculation. An example of scientific theory is the Theory of Evolution, which explains how species change over time.
These theories develop from the arguments that verified certain hypotheses, which the scientists evaluated according to the scientific method.
An animal cell has 2.0% salt concentration. It is placed into a solution with a .05% salt concentration.
Is the solution hypertonic, hypertonic, or isotonic?
Answer:
The solution is hypotonic
Explanation:
The salt concentration in the solution is lower (0.05%) than the concentration of salt inside the cell (2.0%)
Theories can become laws and laws can become theories.
Plz help fast!!!!!
Answer:
False
Explanation:
What would happen if enzymes didn't regulate chemical traffic through pathways of metabolism?
Answer:
Metabolic processes will become uncontrolled.
Explanation:
Enzymes play very essential role in metabolic processes. They transfer electrons from one molecule to another and assist as cell in regulating the extent of anabolic and catabolic processes taking place with in a cell. Thus, if enzymes stops functioning or stop regulating the chemical traffic through pathways of metabolism then the metabolic processes will either not start and in case if they already started, then will not inhibit and remain in the stage of continuation.