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wariber [46]
3 years ago
7

Which of the following statements about the light reactions of photosynthesis is true? a. There are two distinct photosystems, l

inked together by a mechanism similar to electron transport. b. The source for electrons is located in the stroma of the thylakoid. c. The Mn complex is the primary electron acceptor and is located on photosystem I. d. The ultimate electron donor is molecular oxygen. e. Plastoquinone is a fixed electron transporter in the system located in the inner membrane
Biology
1 answer:
Natali5045456 [20]3 years ago
8 0

Answer:

Option (A).

Explanation:

Photosynthesis may be defined as the process in which the light energy has been converted to the chemical energy so that plants can obtain their food with the help of sunlight, carbon dioxide and water.

Photosynthesis is divided into light reaction and dark reaction. The light reaction of photosynthesis is linked together by the mechanism which is similar to the electron transport chain of mitochondria.

Thus, the correct answer is option (A).

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How do living things make use of the energy stored in food molecules?
ipn [44]
Answer:
             The energy stored in food molecule (glucose) is released in he process of respiration. 

Explanation:                     Respiration is a cellular process in which glucose molecule is broken down into carbon dioxide, water and ATP is produced as end product. Respiration consists of following main steps:
1. Glycolysis:                It occurs in the cytoplasm of cell, and each glucose molecule is converted into two pyruvates with help of ATP.
2. Formation of Acetyl coenzyme A:                                                        It is a connecting link reaction between glycolysis and Kreb cycle. In this phase Each pyruvate react with Coenzyme A to become acetyl coenzyme A.
3. Kreb Cycle:                   It occurs inside mitochondria. In this cycle each acetyl coenzyme A with fixed with CO to produce citrate which undergo in a cyclic reaction to produce ATP and NADH. . 
4. Electron transport chain:                                           It is the last step of respiration which complete in mitochondrial membrane. In this phase most of the energy is produced along with H₂O as by product.

4 0
3 years ago
What can stimulate cell regulators to increase cell reproduction?
mezya [45]

hormones can stimulate cell regulators to increase cell reproduction. Thus option C is correct.

<h3>what are the role of hormones in reproduction ?</h3>

Hormones are the chemical messengers  produced by the endocrine cells  and it move through the blood, act on target cells.

The two most important reproductive hormones are estrogen in female and testosterone in male.

Estrogen induce the eggs development and maturation process in adult female and released during regular intervals of menstrual cycle.

Testosterone in male responsible for male gamete production.

Other hormones involved, such as Follicle stimulating hormone (FSH), Luteinising hormone (LH).

Thus option C is correct.

Learn more about hormones, here:

brainly.com/question/13260616

#SPJ1

8 0
2 years ago
1. Answer these questions.
uysha [10]

Answer:

a. Carbohydrates provides energy and regulation of blood glucose.

b. The monomer/building block of a carbohydrate is a monosaccharide.

c. The building blocks of lipids are fatty acids.

d. Some examples can be oils, vitamins, and fats.

e. Lipids store energy.

f.  The building blocks of proteins are amino acids.

g.  Examples of proteins are meat, fish, eggs, and cheese(mainly foods you consume).

h. The building block of a nucleic acids is a nucleotide.

i. The biomolecules that have CHO are carbohydrates and lipids.

j. The quote"You are what you eat" means that it is important to eat good food in order to be healthy and fit.

<u><em>Hope it helps!</em></u>

5 0
2 years ago
A human skin cell has 46 chromosomes. How many chromosomes will each daughter cell have at the end of mitosis?
konstantin123 [22]
Answer : 30 Chromosomes

Explanation : At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell would have half the original number of chromosomes, that is, 15 chromosomes.

Hope this helps you !!!!!
8 0
4 years ago
When blood glucose levels are high:
notka56 [123]
I believe the answer is C
5 0
3 years ago
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