Answer: b. Muscles
A metazoa is a division of animal kingdom that includes all animals expect protozoa and sponges. Metazoa division includes multicelluar animals, which exhibit highly differentiated cells. They have muscular and nerve system and well coordinated tissues and organs. Locomotion requires a coordination activity of muscular, skeletal and neural system. It is mainly achieved by contraction and relaxation of muscles that occurs due to specialized muscle proteins named as actin and myosin which receives signals from nerves.
Hence, locomotion in metazoa is due to contraction of muscles.
Glycolysis takes place in the cytoplasm of the cell, If enough oxygen gas is present, the next steps of cellular respiration will take place in what organelle?
If oxygen is present, the pyruvate molecules move to the mitochondrial matrix
You recognize that a child is choking and ask if you can help. the child nods frantically. you send someone to call 911 and stand behind the victim. what is your next action?
a. give back slaps
b. give abdominal thrusts
c. give chest thrusts
d. lay the child down
It's B, I got it right. You would do chest thrusts if their torso is to big to reach around or if they're pregnant.
Answer:
Option B, give abdominal thrusts
Explanation:
When somebody is choking and having a difficulty in breathing, the first thing is to look for help around you. If there is no one, instead of waiting it is better to rescue the person for one minute and then call on emergency response number 911.
Till the rescue helps arrive, it is better to provide abdominal thrust to the suffering person. In order to do so, one must firmly stand behind the patient and wrap arms under the arms and in front of the abdomen of the patient. Now make a fist and give quick upward thrust to the patient. Continue this till the choking object comes out.
Hence, option B is correct
Explain how an agarose gel can separate DNA fragments of different lengths.
Heyy There,
The negatively charged DNA can be pulled toward the positive field of the gel. 6. Explain how an agarose gel can separate DNA fragments of different lengths. Smaller fragments move faster, and therefore further, than larger fragments as they snake through the gel.
Have a nice day and good luck to u!!!!
DNA that is negatively charged can be drawn in that direction toward the gel's positive field. As they move through the gel, smaller fragments travel further and faster than larger fragments.
What is agarose gel?Agarose gel is a type of gel that is prepared from agarose particles. It is set in a container by adding warm water to it. A three-dimensional block is prepared which contains pores and channels to pass out biomolecules.
DNA is a genetic material that is a long fragment of bases and a hydrogen backbone. They are separate in agarose gel electrophoresis. When an electric current is given to the gel, the molecules move according to their size.
Thus, agarose gel separates the different sizes of fragments, as smaller fragments move faster than the larger fragments.
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Lisa lives in a city that has an average monthly rainfall of 71 millimeters. It has warm summers, and is hottest during July, with an average high temperature of 81°F. The winters are very cold. Lisa’s friend Julia lives in a city with an average monthly precipitation of 270 millimeters. It is warm all year. Julia’s city is in a ? climate, while Lisa’s city is in a ? climate.
Lisa lives in a city, which is a part of the dry climate types. It is most probably a place where the temperatures in the summers are high, and in winter are very low. The place probably would be far from the sea, due to which the rainfall does not reach this place, and thus having a symbolic amount of annual rainfall. Lisa's most probably would be living in a city has a continental climate.
On the other hand, Lisa's friend Julia lives in a city that has an average monthly rainfall of 270 millimeters, it is warm throughout the year, and thus would be possessing higher humidity. On seeing the information, Julia would be living in a city has a tropical climate.
Explain why the loss of topsoil and the extinction of living species are a threat to increased food production
because top soil is very good for growing plants and the loss of animals can effect because some animals help the plants grow!
Error Analysis: What might be the reason that some of your percentages didn't exactly match your predicted results? Gametes aren't responsible for inheritance. Mice don't have large litters, so the sample size was not large enough. The wrong type of mice were used.
Mice don't have large litters, so the sample size was not large enough.
Sample size is important in a research study:
The margin of error decreases as the sample size increases.Researchers can control the danger of reporting false-negative or false-positive results by using larger sample sizes. The precision of the results will increase with the number of samples used.A Type II error happens when the study's findings support the original hypothesis when an alternate one is more likely to be correct. A too-small sample size raises the chance that a Type II error would distort the results, lowering the study's power.The sample size was insufficient because mice don't have huge litters.
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Match each element with its important function. 1. break down of food into energy calcium 2. absorb x-rays in bones sodium 3. cell membrane function carbon 4. all organic compounds oxygen
1. Break down of Food into Energy [tex]\implies[/tex] Oxygen
2. Absorb X - Rays in Bones [tex]\implies[/tex] Calcium
3. Cell Membrane Function [tex]\implies[/tex] Sodium
4. All Organic Compounds [tex]\implies[/tex] Carbon
Answer:
1. break down of food into energy => oxygen
2. absorb x-rays in bones => calcium
3. cell membrane function => sodium
4. all organic compounds => carbon
Explanation:
Oxygen in an element which is required during cellular respiration which in turn generates energy in the form of ATP. Aerobic respiration is not possible in the absence of oxygen.
Calcium is an element which is abundantly present in bones and has great tendency to absorb x rays. It is because of calcium that our bones appear white when they are exposed to x rays.
Sodium ion is present in cells and play a very important role in maintaining cell membrane potential with the help of sodium potassium pump.
Carbon is an important element because it is an important constituent of all organic compounds. All organic compounds are chemically hydrocarbons i.e. compounds having short or long chains of carbon and hydrogen.
If color is an inherited trait in beetles, and birds are more likely to eat brown beetles than green beetles,
a. the frequency of the green allele will increase.
b. the frequencies of the brown and green alleles will not change.
c. this causes the population to evolve due to genetic drift.
d. the frequency of the brown allele will increase.
e. this causes the population to evolve due to gene flow.
Final answer:
The correct answer to why the frequency of the green allele in beetles increases if birds prey more on brown beetles is natural selection, where the survival advantage of the green beetles leads to a higher frequency of the green allele over time.
Explanation:
If color is an inherited trait in beetles, and birds are more likely to eat brown beetles than green beetles, the correct answer would be:
a. the frequency of the green allele will increase.
This scenario is an example of natural selection, where the green beetles have a survival advantage over the brown beetles. Since birds are preying more on brown beetles, the brown allele is being removed more frequently from the gene pool, while the green allele, which confers a better camouflage, increases in frequency as those beetles survive and reproduce. It is important to note that this change in allele frequency is determined by the differential survival and reproduction of the beetles, not by chance or migration, which would be indicative of genetic drift or gene flow, respectively.
Which scenario would most likely NOT lead to speciation?
A) A flood washes a few lizards or insects to a new island.
B) Neighboring herds of elk misinterpret each other’s mating behaviors, causing them to fight instead of mate.
C) Varieties of flowering plants produce pollen in different seasons causing them to be unable to pollinate one another.
D) The rock pocket mice with the dark fur gene mutation survive best on the dark lava flows because they are camouflaged from predators, unlike their lighter counterparts.
IT'S NOT C! I TRIED!! ;(
Final answer:
The scenario that would most likely NOT lead to speciation is when neighboring herds of elk misinterpret each other’s mating behaviors, causing them to fight instead of mate.
Explanation:
The scenario that would most likely NOT lead to speciation is B) Neighboring herds of elk misinterpreting each other’s mating behaviors, causing them to fight instead of mate.
Speciation occurs when populations of the same species become reproductively isolated from each other, leading to the formation of new species. This can happen through various mechanisms such as geographic isolation, genetic mutations, or behavioral differences.
In the given scenario, although the elk herds may experience some disruption in their mating behaviors, it is not likely to result in reproductive isolation and the formation of new species. It is possible that the herds may eventually adjust their behaviors and successfully mate, maintaining genetic continuity within the same species.
How is the energy of a nuclear reactor converted to electricity? The nuclear reactions produce electrical energy directly. Heat powers an electrical generator directly. Steam converts mechanical energy to electricity. Reactor products charge huge batteries.
Nuclear power plants use the nuclear fission reaction to release energy and generate electricity through energy conversion. Take the pressurized water reactor nuclear power plant as an example to illustrate its working principle.
In the pressurized water reactor, a large amount of heat is generated by the self-sustaining chain fission reaction of the nuclear fuel nucleus. The coolant (also called the heat carrier) brings the heat in the reactor to the steam generator and transfers the heat to the working medium, water. The main circulation pump then delivers the coolant back to the reactor for recycling, thereby forming a circuit called the first circuit. This process is also the energy conversion process of nuclear fission energy converted into thermal energy.
The working medium on the secondary side of the U-tube outside the steam generator is vaporized by heat to form steam. The steam enters the steam turbine to expand work, and converts the heat energy released by the steam enthalpy into the mechanical energy of the rotor of the steam turbine. This process is called thermal energy conversion to mechanical energy. The energy conversion process. The steam that has done work is condensed into condensed water in the condenser and returned to the steam generator to form another circulation loop called the second loop. This process is called the energy conversion process of converting thermal energy into mechanical energy. The rotating rotor of the steam turbine directly drives the rotor of the generator to rotate, so that the generator emits electric energy, which is an energy conversion process that converts mechanical energy into electrical energy.
Answer:
Steam converts mechanical energy to electricity.
If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products?
A) 2 atoms of carbon (C)
B) 3 atoms of carbon (C)
C) 6 atoms of carbon (C)
D) 12 atoms of carbon (C)
It would be D. because I think the element doubles.
Drugs to reduce the risk of rejection are given to organ transplant patients because patients because the donated organ contains?
Answer:
When a person receives a transplant, the immune system recognizes the transplanted organ as foreign. This is because the immune system discovers that the antigens in the cells of said transplanted organ are different. This non-compatibility triggers a transplant rejection.
Explanation:
The immune system protects the body from harmful substances such as microorganisms, toxins, etc. These substances have proteins known as antigens, which cover their surface. When these antigens are inside the body, the immune system recognizes that they do not belong to the body and attacks them. This happens in the case of transplants. To prevent this, doctors check both the donor and the person who will receive it. This typification ensures that the organ is as equal as possible to the tissues of the organ's recipient.
"The correct answer is that the donated organ contains foreign antigens that can trigger an immune response in the recipient's body.
When an organ is transplanted from one individual to another, the recipient's immune system recognizes the donated organ as foreign due to the presence of different antigens on the cells of the organ. These antigens, which include major histocompatibility complex (MHC) molecules among others, are proteins that are unique to each individual and are used by the immune system to distinguish between self and non-self.
The immune system's natural response to the presence of foreign antigens is to mount an attack to eliminate what it perceives as a threat. This response, known as the immune rejection, can damage or even destroy the transplanted organ if not properly managed.
To prevent rejection, transplant patients are given immunosuppressive drugs that reduce the activity of the immune system. These drugs help to protect the donated organ by decreasing the immune response against the foreign antigens, thereby reducing the risk of rejection and improving the chances of a successful transplant.
In summary, drugs to reduce the risk of rejection are given to organ transplant patients because the donated organ contains foreign antigens that would otherwise trigger an immune response leading to rejection of the organ. Immunosuppressive therapy is essential in managing this response to ensure the survival of the transplanted organ within the recipient's body."
Please help, I think it is C?
Which tool enhances weather forecasts by enabling monitoring, which is necessary for predicting global weather and environmental events?
A) map
B) satellite
C) weather balloon
D) automated weather station
Correct Answer:
B -- Satellite
Explanation:
I just took the test : )
<Jayla>
Answer:
B. Satellite
Explanation:
Edge quiz / unit test
Hopes this helps and brainliest plz <3
Read the information for transcription using this link, then answer the questions provided. Explain the process of transcription.
the correct answer is-
Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA (mRNA) by the enzyme RNA polymerase. Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language. The two can be converted back and forth from DNA to RNA by the action of the correct enzymes.
How does the speed of sound change as it moves from the surface of the ocean to 1000 meters below to surface? 50 POINTS!!!!!
A. The speed increases because the water is less dense at warmer temperatures.
B. The speed decreases because the water is denser at warmer temperatures.
C. The speed increases because at cooler temperatures the water has more mechanical energy.
D. The speed decreases because at cooler temperatures the water has less mechanical energy.
Answer by YourHope:
Hi! :)
How does the speed of sound change as it moves from the surface of the ocean to 1000 meters below to surface?
D.) The speed decreases because at cooler temperatures the water has less mechanical energy!
:)
After about 1,000 meters, the increasing pressure compensates for the cold temperature, and the more dense water increase the speed of sound again. That should explain the answer :)
How do cells obtain materials they need and get rid of waste products???
cellular attraction between anodes and isotopes in the nutrient stew equation
Cells acquire needed materials through the active import of nutrients and molecules, breaking them down and building them back up into new structures. Wastes are processed and then eliminated through a system of diffusion in single-celled organisms or the circulatory system in multicellular organisms. Both the import of needed materials and the export of waste require a significant expenditure of energy.
Explanation:Cellular Material Processing:
Cells obtain the materials they need and get rid of waste products through various processes. They actively import nutrients and other molecules, metabolize (break down) them, and synthesize them into new molecules. This constant use of energy is required for both the synthesis and breakdown of molecules. For instance, large proteins that makeup muscles are actively built from smaller molecules.
Complex carbohydrates are broken down into simple sugars that the cell uses for energy. Similarly, cells ingest and break down bacteria and viruses. The cells must export waste and toxins to stay healthy, which is done through a complex network of blood vessels that supply the cells with oxygen and nutrients, and remove carbon dioxide and waste products.
Simple, single-celled organisms rely on diffusion for the removal of waste products and the intake of nutrients. In contrast, multicellular organisms like humans have evolved to have circulatory systems carrying nutrients and waste products to and from cells.
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As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the myosin head immediately
A. detaches from actin.
B. initiates binding with actin.
C. tightens its bond to actin.
D. swivels.
i dunno but i think its b
This is was a worldwide scientific project that deciphered the DNA code of all the human Chromosomes of the body
write a short paragraph explaining why biological diversity is important for the survival of a species.
is the variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems.
Biodiversity forms the foundation of the vast array of ecosystem services that critically contribute to human well-being.
Biodiversity is important in human-managed as well as natural ecosystems.
Decisions humans make that influence biodiversity affect the well-being of themselves and others.
Biodiversity is the foundation of ecosystem services to which human well-being is intimately linked. No feature of Earth is more complex, dynamic, and varied than the layer of living organisms that occupy its surfaces and its seas, and no feature is experiencing more dramatic change at the hands of humans than this extraordinary, singularly unique feature of Earth. This layer of living organisms—the biosphere—through the collective metabolic activities of its innumerable plants, animals, and microbes physically and chemically unites the atmosphere, geosphere, and hydrosphere into one environmental system within which millions of species, including humans, have thrived. Breathable air, potable water, fertile soils, productive lands, bountiful seas, the equitable climate of Earth’s recent history, and other ecosystem services (see Box 1.1 and Key Question 2) are manifestations of the workings of life. It follows that large-scale human influences over this biota have tremendous impacts on human well-being. It also follows that the nature of these impacts, good or bad, is within the power of humans to influence (CF2).
Defining Biodiversity
Biodiversity is defined as “the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems.” The importance of this definition is that it draws attention to the many dimensions of biodiversity. It explicitly recognizes that every biota can be characterized by its taxonomic, ecological, and genetic diversity and that the way these dimensions of diversity vary over space and time is a key feature of biodiversity. Thus only a multidimensional assessment of biodiversity can provide insights into the relationship between changes in biodiversity and changes in ecosystem functioning and ecosystem services (CF2).
Biodiversity includes all ecosystems—managed or unmanaged. Sometimes biodiversity is presumed to be a relevant feature of only unmanaged ecosystems, such as wildlands, nature preserves, or national parks. This is incorrect. Managed systems—be they plantations, farms, croplands, aquaculture sites, rangelands, or even urban parks and urban ecosystems—have their own biodiversity. Given that cultivated systems alone now account for more than 24% of Earth’s terrestrial surface, it is critical that any decision concerning biodiversity or ecosystem services address the maintenance of biodiversity in these largely anthropogenic systems (C26.1).
Measuring Biodiversity: Species Richness and Indicators
In spite of many tools and data sources, biodiversity remains difficult to quantify precisely. But precise answers are seldom needed to devise an effective understanding of where biodiversity is, how it is changing over space and time, the drivers responsible for such change, the consequences of such change for ecosystem services and human well-being, and the response options available. Ideally, to assess the conditions and trends of biodiversity either globally or sub-globally, it is necessary to measure the abundance of all organisms over space and time, using taxonomy (such as the number of species), functional traits (for example, the ecological type such as nitrogen-fixing plants like legumes versus non-nitrogen-fixing plants), and the interactions among species that affect their dynamics and function (predation, parasitism, competition, and facilitation such as pollination, for instance, and how strongly such interactions affect ecosystems). Even more important would be to estimate turnover of biodiversity, not just point estimates in space or time. Currently, it is not possible to do this with much accuracy because the data are lacking. Even for the taxonomic component of biodiversity, where information is the best, considerable uncertainty remains about the true extent and changes in taxonomic diversity (C4).
The surface area/volume ratio is an important factor for one celled organisms. As a cell's volume grows, its surface area/volume ratio decreases, making it harder and harder to acquire enough nutrients via diffusion. Because of this, cells stop growing after reaching a certain size. After reaching this state, a one celled organism is likely to
A) enter into a spore state
B)continue to grow until it is so big it burst
C)use mitosis to diced and create daughter cells
D)stop eating that it shrinks and it’s surface area/volume ratio grows
Answer:
The most appropriate answer is option C.
Mitosis refers to a cell division in which a parent cell divides to give rise to two equal daughter cells. It helps in the growth and repair of tissues in multicellular organisms.
Once the cell has increased its size significantly, it undergoes mitosis to divide into smaller daughter cells.
It increases the area to volume ratio of the cell and helps the cell to get nutrition from a simple process such as diffusion.
Millions of years ago, many plants use carotenoids as their primary pigment. Today most plants use chlorophyll. What could explain this cahnge
I feel like we’re taking the same test rn
Need Help ASAP 20 pts and will award brainiest.
In a multicellular organism, what are the levels of organisms from smallest to largest, and what is their relationship to one another
cells, tissues, organs, organ systems
The function of an organ system depends on the integrated activity of its organs
The factor(s) that determine the duration of a twitch in various types of fibers is the speed of the
A. removal of Ca2+ ions from the sarcoplasm only.
B. hydrolysis of ATP only.
C. movement of Na+ across their membranes only.
D. removal of Ca2+ ions from the sarcoplasm and hydrolysis of ATP.
E. removal of Ca2+ ions from the sarcoplasm and hydrolysis of ATP and movement of Na+ across their membranes.
Hai :3
Interesting question about physiology.
The duration of a twitch in various types of fibers is the speed of the removal of Calcium ions from the sarcoplasm. Therefore, your answer should be A.
During the adult years, ____ can adversely affect the immune system. undernutrition overnutrition excessive iron intake obesity all of these choices are correct.
The answer to the blank space in the question is (D) all of these choices are correct.
Undernutrition will impact the immune system adversely since the body cannot fight off the infections due to the lack of nutrients. While, over nutrition and excessive iron intake would cause an imbalance to the body which would also influence the immune system negatively. Thus, all these options would be harmful to the immune system.
Which of the following describe the role a biochemical pump plays in active transport?
A, It helps move materials across the membrane against the concentration gradient.
B, It helps large molecules that do not normally cross the cell membrane to enter or exit cells.
C, It helps a cell accumulate a relatively high concentration of a molecule.
D, It helps move water more quickly across the membrane.
Molecules always tend to move downhill i.e, from higher concentration to lower concentration, but if a molecule has to move uphill i.e towards higher concentration then energy has to be spent.
Active transport requires energy in the form of ATP i.e. ATP must break down for the movement of molecule against its concentration gradient. (ans is A)
Genes that are linked together _____.
A. combine to form traits
B. result in incomplete chromosomes
C. form dominant traits
D. are found on a particular chromosome
genes that are linked together combine to form traits
The individual with genotype AaBbCCDdEE can make many kinds of gametes. Which of the following is the major reason?
A) segregation of maternal and paternal alleles
B) recurrent mutations forming new alleles
C) crossing over during prophase I
D) different possible alignments of chromosomes
E) the tendency for dominant alleles to segregate together
The correct is answer is option D
Different possible alignments of chromosomes
In totality there are 5 traits with two allele each
Aa, Bb, CC, Dd, EE
The gametes formed will have allele from each gene and thus in totality each gamete will have 5 allele.
Thus different gamete can be produced such as ABCDE, ABcDe, AbCDE, AbcDe and many more.
The major reason why the individual with genotype AaBbCCDdEE can make many kinds of gametes is different possible alignments of chromosomes during meiosis. Hence the correct option is D.
The genotype AaBbCCDdEE indicates that the individual is heterozygous at multiple gene loci (Aa, Bb, Cc, Dd, EE). During meiosis, the homologous chromosomes (one from each parent) pair up and align randomly along the metaphase plate during Metaphase I.
This random alignment is known as "independent assortment." The independent assortment of chromosomes during meiosis leads to various combinations of maternal and paternal alleles being present in the gametes, resulting in the production of a wide variety of gametes with different genetic compositions.
Hence the correct option is D.
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The pop-up question at the end of this level asks whether an animal or a plant is more closely related to a fungus.
Answer:
Although apparently it may look that fungi are more related to plants than the animals but the fact is quite opposite.
Explanation:
The molecular phylogenetic analysis is an excellent tool to find out the correct ancestor and evolutionary history of organisms. The molecular phylogenetic studies have depicted that fungi are more related to animals than to the plants. Please see attached figure.
Here are some of the many similarities between animals and fungi:
Both are eukaryotes that means they have proper organelles bonded by proper membranes.Both need energy from the sun for their survival but are unable to use that sunlight for the production of food (heterotrophs).Both do not contain photosynthetic pigments called chlorophylls in their cells.Hope it help!
Fungi are more closely related to animals than plants. They are heterotrophic, use complex organic compounds for energy, and share traits with animals. Fungi play a crucial role in ecosystems by breaking down organic materials.
Explanation:Fungi, once considered plant-like organisms, are more closely related to animals than plants. Fungi are heterotrophic and use complex organic compounds as sources of energy and carbon. They also share traits with animals such as having chitin in their cell walls, producing pigments like melanin, and storing carbohydrates as glycogen. Fungi play a vital role in ecosystems by acting as decomposers and breaking down organic materials into simple molecules.
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A nonnative squirrel is introduced into a forest. Which would most likely prevent this squirrel from becoming an invasive species?
Answer: When the non native species is introduced into the forest then the squirrel should compete with the stronger animals present in the forest for the sake of resources.
The squirrels in this case will not win from the native species present there and ultimately the population of squirrel will decrease.
The population of squirrel will get extinct at a time and would not be considered as an invasive species.
C. The squirrel must compete with strong native competitors (apex)
Organisms interact with their environments, exchanging matter and energy. For example, plant chloroplasts convert the energy of sunlight into
A) the energy of motion.
B) carbon dioxide and water.
C) the potential energy of chemical bonds.
D) oxygen.
E) kinetic energy.
The process of photosynthesis by green plastids absorb light energy coming from the sun and then converted to chemical energy, and then install the carbon dioxide within the green plastids themselves, resulting in the process of sugar glucose and oxygen gas and a few molecules of water, and in what The following is a chemical equation that shows how photosynthesis occurs: [3] CO2 + H2O + Sun light + Chlorophyll H2O + O2 + C6H12O6 The photosynthesis is not limited to the organism itself but extends to the surrounding ecosystem as it absorbs carbon dioxide from the atmosphere to perform this process, K They produce the oxygen gas being released into the atmosphere, which creates a state of balance between these gases in the atmosphere
Final answer:
Plant chloroplasts convert sunlight into the potential energy of chemical bonds during photosynthesis, storing it in sugar molecules for later use. The correct answer is: C) the potential energy of chemical bonds.
Explanation:
Organisms interact with their environments, exchanging matter and energy. Specifically in plants, chloroplasts convert the energy of sunlight into a useable form. The correct answer to the question is C) the potential energy of chemical bonds. This is because, during photosynthesis, light energy is captured and used to energize electrons, which are then stored in the covalent bonds of sugar molecules such as glucose. The energy stored in these chemical bonds is later made available to organisms that consume these plants, providing the energy necessary for life processes like cellular respiration.