$$6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 1

Which organelle is primarily responsible for photosynthesis in plant cells, as shown in the first image?

Accepted Answer

Chloroplast

Question 2

Which of the following equations correctly represents the overall process of photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O + 	ext{light energy} ightarrow C_6H_{12}O_6$ + 6O_2$$

Question 3

What is the main function of the light reactions in photosynthesis?

Accepted Answer

To split water, release oxygen, and produce ATP and NADPH

Question 4

Which pigment is the primary light-absorbing molecule in photosynthesis?

Accepted Answer

Chlorophyll a

Question 5

Why do leaves appear green to our eyes?

Accepted Answer

They reflect and transmit green light while absorbing other wavelengths

Question 6

Which structure in the chloroplast contains the photosynthetic pigments and is the site of the light reactions?

Accepted Answer

Thylakoid membrane

Question 7

What is the main product of the Calvin cycle?

Accepted Answer

Glyceraldehyde 3-phosphate (G3P)

Question 8

Which enzyme catalyzes the first step of carbon fixation in the Calvin cycle?

Accepted Answer

Rubisco

Question 9

Which adaptation allows CAM plants to survive in arid environments?

Accepted Answer

They temporally separate CO2 fixation and the Calvin cycle, opening stomata at night

Question 10

Which of the following best describes the difference between C4 and C3 photosynthesis?

Accepted Answer

C4 plants spatially separate CO2 fixation and the Calvin cycle, while C3 plants do not

Question 11

Which molecule acts as the final electron acceptor in the light reactions of photosynthesis?

Accepted Answer

NADP$$^+$$

Question 12

What is the main role of accessory pigments such as carotenoids in photosynthesis?

Accepted Answer

To broaden the spectrum of light that can be used for photosynthesis and protect chlorophyll from damage

Question 13

Which of the following is a direct product of the light reactions and is used in the Calvin cycle?

Accepted Answer

NADPH

Question 14

Which of the following organisms are considered autotrophs based on the images provided?

Accepted Answer

The diatoms (microscopic algae)

Question 15

What is the main consequence of photorespiration in C3 plants under hot, dry conditions?

Accepted Answer

Decreased photosynthetic efficiency due to oxygenation of RuBP

Question 16

Which of the following best explains why C4 and CAM plants have evolved alternative photosynthetic pathways?

Accepted Answer

To increase CO2 concentrations near rubisco and minimize photorespiration

Question 17

Which of the following is NOT a product of the light reactions of photosynthesis?

Accepted Answer

Glucose

Question 18

In which part of the chloroplast does the Calvin cycle take place?

Accepted Answer

Stroma

Question 19

Which of the following best describes the relationship between photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis stores energy in organic molecules, while cellular respiration releases energy from organic molecules

Question 20

Which of the following adaptations would you expect to find in a desert plant to help conserve water?

Accepted Answer

CAM photosynthesis and thick, waxy cuticles

chapter 10

스터디 가이드 - 연습 문제