Consider the following events of photosynthesis. 1. Light energy excites electrons. 2. Water molecules are split. 3. NADPH is formed. In which locations do each of these events occur? 1. photosystem II 2. photosystem I 3. photosystem I 1. photosystem II 2. photosystem II 3. photosystem I 1. photosystem I 2. photosystem I 3. photosystem II 1. photosystem I 2. photosystem II 3. photosystem II

Answers

Answer 1

Answer:

Answer: Option B. 1. photosystem II 2. photosystem II 3. photosystem I

Explanation:

Photosynthesis is the process by which plants make their own food in the presence of light utilizing carbon dioxide and water. this process occurs in chloroplast which contains green pigments called chlorophyll.

Photosystem are defined as the cluster of chlorophyll pigments found on the thylakoid membrane ( in chloroplast) which functions to collect energy and concentrate it to reaction center which further uses the energy to excite electrons and pass on to enzymes.

Photosystem II absorbs light and energy which allows the excitation of electrons and creates an electron deficiency in Photosystem II. the deficiency filled by Z protein which contain manganese that stimulates splitting of two water molecules.

NADPH formation takes place in Photosystem I. Photosystem I accepts energy from light which excites an electron and passed on to an electron acceptor called FeS. FeS then passes its e- to Ferrodoxin which donates its electron to NADP+ reductase. NADP+ reductase donates electron to NADP+ and add a proton to form NADPH to get stabilized.

Hence, the correct option is B.

Answer 2

Answer:

Answer:

Explanation:

i took the test on engenuity 2020

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Answers

I believe the correct answer is true. Proteins are considered biological polymers because they contain repeating units of amino acids. Other types of biological molecules are Carbohydrates, Lipids & Nucleic Acids. Hope this answers the question. Have a nice day.

This international agreement helped to reverse ozone depletion.Kyoto Protocol
Montreal Protocol
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Answers

The Montreal Protocol agreement helped to reverse ozone depletion.

Answer: Option B

Explanation:

The stratospheric ozone layers safeguards the Earth against harmful ultraviolet radiation which cause skin cancers and cataracts to humans, as well as physiological hazard to animals and all plants.

With the increase in signs of ozone depletion, government has ratified the Montreal Protocol, a global agreement to halt the production of harmful chemicals called chlorofluorocarbons (CFC's). At that time, CFC's were used in hairsprays, and refrigerators.

The Protocol on substances which deplete ozone layer (Vienna Convention on the Protection of Ozone Layer). This international convention aimed at protecting ozone layer by producing a large number of substances responsible for ozone depletion's.

Kyoto Protocol is the right answer since it was made for all of the nation's in the UN to follow (some didn't but some did).

The combined alleles of all the individuals in a population are called the ?

Answers

The combined alleles of all the individuals in a population are called the gene pool. It refers to different types of genes that exist within an interbreeding population, i.e. the organisms that mate with each other, with the same type of organism, within the same population.

A dog gives birth to five puppies. What percentage of its chromosomes does each puppy share with the mother?A. 25%
B. 50%
C. 75%
D. 100%

Answers

the answer us b. 50%

yep 50% because each parent gives 50% Of DNA

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Answers

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The Canadian Shield, a vast expanse of ancient rock, is centered around which area?

Answers

The Canadian Shield, a vast expanse of ancient rock, is centered around Hudson Bay. I hope this is the answer that you are looking for and it comes to your help.

Hudson Bay . . . i hope this helps a lot

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