C4: Photosynthesis

Question 1

Question: What are some organisms that carry out photosynthesis?

Answer 1

Answer: Plants, algae, protists, and cyanobacteria.

Question 2

Question: What is the green colored pigment involved in photosynthesis?

Answer 2

Answer: Chlorophyll.

Question 3

Question: What is the function of chlorophyll in photosynthesis?

Answer 3

Answer: It absorbs light energy to initiate the process.

Question 4

Question: In what organelle does photosynthesis occur?

Answer 4

Answer: Chloroplasts.

Question 5

Question: How many stages are there in photosynthesis?

Answer 5

Answer: Three stages.

Question 6

Question: What are the three stages of photosynthesis?

Answer 6

Answer: Light energy capture, ATP and NADH synthesis, and the Calvin Cycle.

Question 7

Question: Which stages are part of the light reactions?

Answer 7

Answer: capturing light energy and synthesizing ATP and NADH

Question 8

What is the purpose of the Calvin cycle in photosynthesis?

Answer 8

Answer: Fixing carbon dioxide into carbohydrates.

Question 9

Question: Can stage the Calvin cycle also be referred to as the dark reactions?

Answer 9

Answer: Yes, it can.

Question 10

Question: How can the process of photosynthesis be expressed?

Answer 10

Answer: Carbon dioxide + water + light → glucose + water + oxygen.

Question 11

Question: What is light?

Answer 11

Answer: Light is a form of energy that travels in wave packets called photons.

Question 12

Question: What absorbs light in photosynthesis?

Answer 12

Answer: Photosystems embedded in the thylakoid membranes absorb light of particular wavelengths.

Question 13

Question: What happens during the light reactions?

Answer 13

Answer: The energy from the absorbed light is transferred to form ATP and convert ADP.

Question 14

Question: What do the reactions of carbon fixation depend on?

Answer 14

Answer: The reactions of carbon fixation depend on the light reactions for energy and reductant.

Question 15

Question: Which pigment transfers light energy to carbon fixation reactions?

Answer 15

Answer: Chlorophyll A is the pigment that transfers light energy to carbon fixation reactions.

Question 16

What are the roles of chlorophyll B and carotenoids in photosynthesis?

Answer 16

Answer: They act as accessory pigments, transferring their energy to chlorophyll.

Question 17

Question: Where does the Calvin cycle take place?

Answer 17

Answer: The Calvin cycle occurs in the chloroplast stroma.

Question 18

Question: What is the primary end product of the Calvin cycle?

Answer 18

Answer: The primary end product is G3P.

Question 19

Question: How can G3P be used within the chloroplast?

Answer 19

Answer: It can be converted into glucose and polymerized into starch.

Question 20

Question: How is glucose and sucrose transported in plants?

Answer 20

Answer: They are transported from mesophyll cells to other cells of the plant.

Question 21

Question: What are the main reactants in cellular respiration and photosynthesis?

Answer 21

Answer: In respiration, the main reactant is glucose, while in photosynthesis, it is CO2 and water.

Question 22

Question: What are the main products of cellular respiration and photosynthesis?

Answer 22

Answer: In respiration, the main products are CO2 and water, while in photosynthesis, it is glucose.

Question 23

Question: What is the interesting waste product of photosynthesis?

Answer 23

Answer: Oxygen is the waste product of photosynthesis.

Question 24

Question: What is the difference between respiration and photosynthesis in terms of energy?

Answer 24

Answer: Respiration releases energy, while photosynthesis stores energy.