Which best describes how the photosystems are used in the light-dependent reactions?
photosystem I is used first then photosystem II
photosystem II is used first then photosystem I
Both processes are used at the same time.
Both processes are used during the light-independent reactions.

Answers

Answer 1

Answer:

B. photosystem II is used first then photosystem I

Answer 2

Photosynthesis is a series of metabolic reactions that convert sunlight, water and CO2 into sugar and oxygen. The reactions in photosynthesis can be divided into light-dependent and light-independent reactions.

The statement "photosystem II is used first then photosystem I" BEST describes how the photosystems are used in light-dependent reactions.

Photosystem I (PSI) and photosystem (PSII) are protein complexes localized in the thylakoid membrane of the chloroplast.

During light-dependent reactions, energy from sunlight is absorbed by chlorophyll of the photosystems. Subsequently, this energy is then converted into chemical energy (ATP and NADPH), a process that involves the transference of electrons.

Both photosystem I and photosystem II contain pigments to collect sunlight energy and a reaction center in which excited electrons can be transferred from chlorophyll to an electron acceptor.

Photosystem II is upstream in the electron flow pathway, but this photosystem (PSII) was discovered after photosystem I.

Subsequently, electron flow is coupled to the generation of an electrochemical proton (H+) gradient across the thylakoid membrane, which is used to synthesize ATP by an ATP synthetase.

In conclusion, the statement "photosystem II is used first then photosystem I" BEST describes how the photosystems are used in light-dependent reactions.

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Which Best Describes How The Photosystems Are Used In The Light-dependent Reactions?photosystem I Is

Related Questions

What is the term that refers to knowledge of where a person's body parts are located in space?

Answers

Answer: Proprioception

Explanation:

the term is proprioception

Fermentation and aerobic respiration break down glucose to make
energy. Which statement correctly compares the two processes?
Fermentation uses more oxygen than aerobic respiration uses.
A.
B.
Aerobic respiration uses more glucose than fermentation uses.
C.
Aerobic respiration produces less energy than fermentation
produces
D.
Fermentation produces less energy than aerobic respiration
produces.

Answers

Answer: Fermentation produces less energy than aerobic respiration produces.

Explanation:

Just took the quiz

Fermentation has been the process that occurs in the bacteria and yeasts to break sugar in absence of oxygen. It produces less amount of energy than the process of aerobic respiration. Thus, option D is correct.

What are fermentation and aerobic respiration?

Fermentation has been the process of producing energy by the chemical breakdown of the carbohydrates molecule by the enzymes in absence of oxygen molecules in yeasts, bacteria, etc. The end products also produced carbon dioxide gas as an effervescence.

On the other hand, aerobic respiration has been one of the processes of cellular respiration that uses oxygen to break the carbohydrate molecules into energy in the form of ATP. This type of respiration is the most common and occurs in the majority of organisms.

Both processes use carbohydrate molecules to produce energy, adenosine triphosphate (ATP) at the end of the reaction.  Aerobic respiration is metabolic and fermentation has been the catabolic process. The amount of energy produced in fermentation is relatively less compared to aerobic due to incomplete oxidation of glucose.

Therefore, in option D. the amount of energy differs in both processes.

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Which of the following does not occur during anaphase?
A. Centromeres divide
B. Chromosomes move toward opposite poles
C. Spindle fibers pull on the chromosomes
D. Nuclear envelope dissolves

Answers

Answer:

D. nuclear envelope dissolves

Explanation:

this happens in prophase

Anaphase is a part of meiosis. In anaphase, the nuclear envelope does not dissolve. In this phase, centromeres divide, spindle fibers pull on the chromosomes, and the chromosomes move toward opposite poles. Hence, opton D is true.

What is anaphase?

Anaphase is a part of both meiosis and mitosis in the cell division process. In mitosis, the anaphase separates the daughter chromatids of the homologous chromosome by pulling them via their centromeres to the opposite poles. In meiosis, there are two stages of anaphases, such as anaphase I and anaphase II, and in each stage there are different types of chromosome separation.

 

In meiosis I, in anaphase I, each chromosome of the homologous chromosome is attached with a spindle fiber, but this phase only separates the homologous chromosome. The further separation of sister chromatids takes place in meiosis II, with each cell getting a haploid set.

 

Hence, in anaphase, the nuclear envelope does not dissolve, as this takes place in prophase. The last option is true.

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If the Earth suddenly stopped having seasons, what could be the likely cause?

The Earth moved farther away from the Sun
The Earth is no longer tilted
The Moon disappeared
The Earth’s rotation has increased

Answers

Answer:

The Earth is no longer tilted.

Explanation:

From my understanding, the reason we have season's is because the Earths axis is tilted.

what are the two alleles for flower color in snapdragon​

Answers

Answer:

In snapdragons ,the colour of the flower is controlled by incomplete dominance.The two alleles are Red(r) and white.

Can some body pls give me a description of genetically modified foods?

Answers

Answer:

Foods generated from genetically modified (GM) species have had their genetic material (DNA) altered in a way that does not occur naturally, for as by introducing a gene from another creature.

Explanation:

Give one example of an eco system in New Mexico?

Answers

Answer:

New Mexico is dominated by five major ecosystems: (1) alpine-conifer, (2) desert and basin, (3) juniper-scrub, (4) plains-mesa, and (5) riparian habitats such as cottonwood bosque and willow marshes. Each of these ecosystems brings a characteristic flora and fauna to our state.

Which of these is dictated by the law of supply and demand?
1) oil
2) renewable resources
3) biodegradable resources
4) air pollution

Answers

oil
renewable resources have a infinite supply
air pollution has no demand

The law of the supply depends on the demand and need of the resource in the market for various uses. Oil (non-renewable) is dictated by the law of supply and demand. Thus, option 1 is correct.

What are non-renewable resources?

Non-renewable resources are limited resources that are not easily replenishable as it takes a very long time for them to be produced. Oil is a fossil fuel and a non-renewable resource that has limited supply and follows the demand.

Renewable resources like wind, water, soil, etc., are infinite in number and hence they are not balanced by demand and supply. On the other hand, air pollution has no demand and biodegradable resources do not dictate the demand-supply law.

Therefore, option 1. oil being a non-renewable resource is dictated by the law of supply and demand.

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When certain molecules are pumped across biological membranes against a concentration gradientvia active transport, ATP is used. In the cells of our bodies, for example, sugars are activelytransported and metabolized within the membrane-enclosed mitochondria. Prokaryotes, incontrast, lack mitochondria but are nonetheless able to metabolize the same sugars. Based on the details provided in this scenario, whiat would be expected to beTRUE?

Answers

Answer:

tyher are 12 cells

Explanation:

IK

Provide 2 examples of enzymes and the pH of the environment in which it works.

Answers

Answer:

12. Provide 2 examples of enzymes and the pH of the environment in which itworks.13. Describe the effect of temperature on enzyme function.14. Click onirtual_labs_2K8/labs/BL_02/index.html. In this experiment you will determine theeffects of substrate concentration and pH on the initial rate of an enzyme-catalyzedreaction.15. What is different in people who suffer from lactose intolerance when comparedwith“normal individuals”?16. Read the objectives and procedures. Click the monitor and watch the videoabout enzyme action. Summarize the video.

Two examples of enzymes and their pH in the environment in which it works are pepsin whose pH is 2 and Lipase whose pH is 8.

What are enzymes?

Enzymes are biocatalysts made up of proteins to increase the speed of the reaction.

Enzymes do not involve in the reaction and in the end of the reaction they separate from the reaction and their substance is specific. They are specific to reactions whose speed is increased by these enzymes in high temperatures and pH their structure changed as they are protein and with extreme where they also get the nature.

The two enzymes are pepsin works best in strongly acidic environments and lipase works best in a basic environment.

Therefore, Pepsin, an enzyme with a pH of 2, and lipase, an enzyme with a pH of 8, are two examples of enzymes and the environments in which they function.

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If the entire universe was shrunk down to the size of Earth, how big would our galaxy be?
A. The size of a car.
B. The size of a city block.
C. The size of an apple.
D. The size of a piece of dust.

Answers

Answer:

D. The size of a piece of dust.

WHOEVER RESPONDS FIRST WILL GET MARKED BEST!
Which of the following is NOT an
advantage of selective breeding?
A maintains certain stable traits to pass
down to the offspring
B traits help the animal prosper in
confinement
C breedin for only one trait can cause
problems in other traits
D makes the species stronger

Answers

the answer to the question is A

Which muscle can you find closest to the femoral region of the body?
O Internal Oblique
O Soleus
O Trapezius
O Quadriceps femoris
Help me

Answers

The muscle that you would find closest to the femoral region of your body is: D. Quadriceps femoris.

What is the Quadriceps Femoris?

The quadriceps femoris can be described a large group of fleshy muscles that is found covering the front and sides of the thigh.

The quadriceps femoris consists of the rectus femoris, vastus lateralis, vastus medialis, and the vastus intermedius.

The thigh is also called the femoral region.

Therefore, the muscle that you would find closest to the femoral region of your body is: D. Quadriceps femoris.

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how many plat and animal species do wildlife experts estimate are endangered

Answers

Estimate 1000
Endangers 100,000

When going down a slope on a roller coaster, does your stomach actually move up?


Yes


No

Answers

Yes it moves up , because when going down a high speed on a roller coaster you’re body moves up and so does you’re stomach

Answer:

Yes

Explanation:

PLEASE I NEED THIS ASAP If you had a cell that was cube-shaped with a side length of 20µm, calculate the surface to volume ratio of the cell. Round your answer to the tenths place.

Answers

Answer:

Ratio = [tex]3\times 10^5[/tex]

Explanation:

Side of a cube, a = 20 µm

[tex]a=20\times 10^{-6}\ m[/tex]

The surface area of a cube, A = 6a² (a is side of the cube)

The volume of a cube, V = a³

The ratio of the surface to volume ratio of the cell will be given by :

[tex]R=\dfrac{6a^2}{a^3}\\\\R=\dfrac{6}{a}\\\\R=\dfrac{6}{20\times 10^{-6}}\\\\R=3\times 10^5[/tex]

So, the ratio of the surface to volume ratio of the cell [tex]3\times 10^5[/tex].

Answer:

0.3

Explanation:

I got it right on my AP Bio assignment on edge

What is the rate change of y=4x - 5

Answers

Answer:

4

Explanation:

Equation of a straight line => y = mx + c

The slope m is the gradient or rate of change.
comparing the equation of a straight line and the given equation shows that m= 4


when the rate of change is linear and constant it is same as slope


Hope this helps you....

Which of the following statements regarding the heart is NOT TRUE?

a.
It is situated between the lungs in the thoracic cavity.

b.
Your heart is approximately the size of your fist.

c.
Approximately 2/3 of its mass lies to the right of the body’s midline.

d.
The apex of the heart rests on the diaphragm.

e.
The base is where major blood vessels enter and exit the heart.

Answers

Answer:

a is the correct answer

The correct answer is A. It is situated between the lungs in the thoracic cavity.

A proteinâs function is determined by the properties of its amino acids. Which replacement of one amino acid with another is least likely to affect the proteinâs function?

a. A hydrophilic amino acid is replaced by a hydrophobic amino acid. an amino acid with a C=O group is replaced by an amino acid with an O-H group.
b. A charged amino acid is replaced by an amino acid with a side chain consisting of a group with three C-H bonds.
c. A hydrophobic amino acid is replaced by a charged amino acid.
b. A negatively charged amino acid is replaced by a positively charged amino acid.

Answers

Answer:

an amino acid with a C=O group is replaced by an amino acid with an O-H group

Explanation:

When an amino acid is substituted by another with opposite properties the replacement will modify the structure (and consequently also the function) of the resulting protein. For example, it is expected that the replacement of amino-acid residues with different solubility will alter the protein’s structure and this protein will establish different interactions with water, cell structures, or further segments of the protein. Therefore, in the cases above enumerated, only C-O and O-H groups have similar properties (i.e. they are hydrophilic and have polar bonds), and thereby it is expected that this replacement has no significant incidence on the protein’s structure and function.

2. What is exponential growth? When does it occur?

Answers

Answer:

Exponential growth is a pattern of data that shows greater increases as time goes on. you can recognize exponential growth when there is a curve of an exponential function. If a population of mice doubles every year starting with two in the first year, the population would be four in the second year, 16 in the third year, 256 in the fourth year, and would keep rising. The population is growing to the power of 2 each year in this case which means exponentially. It occurs when a pattern of data shows high increases over time

Daoism can be summarized by which statement?

Answers

Answer:

A philosophical thought or school that teaches beliefs and religions, another way of passing on traditions and important legacies in China.

I hope this helps!

Select All of the characteristics of natural selection

Answers

Answer:

Edit with options and I will comment my answer

Explanation:

Why it is important veterinary?

Answers

Answer:

The veterinary profession contributes to improvement of human and public health by improving agriculture and food systems, advancing biomedical and comparative medical research, preventing and addressing zoonotic diseases, enhancing environmental and ecosystem health, and helping manage 21st century public health

Explanation:

Goodmorning, I don’t remember what it is, can some one help me

Answers

Answer:

u8y0y8y80fy8f8hhjofstill

how do alleles influence inherited traits?

Answers

Answer:

They can determine if a trait is recessive or dominant, which means in can determine what will show up in the offspring.

How are cells organized in complex organisms? List the levels of organization in animals
such as humans.

Answers

Answer:

Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive. The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.

One's motivation can lead people to interpret the same situation differently.
Please select the best answer from the choices provided
T
F

Answers

Answer:

True

Explanation:

Motivation can influence one’s perception by influencing focus and expectations. Got it right on the quiz.

Answer:

true

Explanation:

Who conquered England?

William of Normandy
Charlemagne
Pope Gregory VII
Henry IV

Answers

Answer:

William, duke of Normandy

Explanation:

Answer:

A ez pez edg 2021

Explanation:

Suppose a volcano sent large amounts of ash into the air that blocked the sunlight over a large area of ocean water for several months. Would this affect life in the ocean? Explain why or why not.

Answers

Answer:

Explanation:

Certain types of volcanic ash do not dissolve easily in water. Instead, they clump on the surface of the ocean in pumice rafts. These rafts can clog salt water intake strainers very quickly, which can result in overheating of shipboard machinery dependent on sea water service cooling.

Which question can be tested scientifically?
Does humidity affect the decay rate of leaves?
How does a biologist become successful?
What shape are the flowers of a cherry tree?
Are puppies cuter than kittens?

Answers

does humidity affect the decay rate of leaves?
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