$$6\ \text{CO}_2 + 6\ \text{H}_2\text{O} \rightarrow 6\ \text{O}_2 + C_6H_{12}O_6$

Question 1

Which term best describes an organism that can produce its own food using sunlight, as shown in the image?

Accepted Answer

Photoautotroph

Question 2

Based on the image, which molecule is a product of photosynthesis that is released into the atmosphere?

Accepted Answer

Oxygen

Question 3

Which equation correctly represents the overall process of photosynthesis depicted in the image?

Accepted Answer

$$6\ 	ext{CO}_2 + 6\ 	ext{H}_2	ext{O} ightarrow 6\ 	ext{O}_2 + C_6H_{12}O_6$

Question 4

Which structure in the leaf is primarily responsible for gas exchange, allowing carbon dioxide to enter and oxygen to exit?

Accepted Answer

Stomata

Question 5

In the process shown, which pigment is most responsible for absorbing sunlight?

Accepted Answer

Chlorophyll

Question 6

Which layer of the leaf contains the most chloroplasts and is the main site of photosynthesis?

Accepted Answer

Palisade mesophyll

Question 7

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

Accepted Answer

To generate ATP and NADPH

Question 8

Which molecule provides the electrons that are transported through the electron transport chain in the thylakoid membrane?

Accepted Answer

Water

Question 9

During the Calvin cycle, which molecule is used to fix carbon and produce glucose?

Accepted Answer

RuBP

Question 10

Which factor would most likely limit the rate of photosynthesis in a plant growing under low light conditions?

Accepted Answer

Availability of sunlight

Question 11

If a plant is exposed to only green light, what would happen to the rate of photosynthesis and why?

Accepted Answer

It would decrease because green light is mostly reflected

Question 12

Which process in the light reactions directly results in the formation of ATP?

Accepted Answer

Chemiosmosis

Question 13

What is the role of NADPH in the Calvin cycle?

Accepted Answer

It acts as an electron donor for carbon fixation

Question 14

Which of the following is a correct description of a redox reaction in photosynthesis?

Accepted Answer

Carbon dioxide is reduced to glucose

Question 15

Deforestation can impact the process of photosynthesis and contribute to climate change primarily because:

Accepted Answer

It decreases the number of plants available to absorb carbon dioxide

Question 16

Which structure within the chloroplast is the site of the light reactions?

Accepted Answer

Thylakoid membrane

Question 17

What is the main purpose of the Calvin cycle in photosynthesis?

Accepted Answer

To synthesize glucose from carbon dioxide

Question 18

Which molecule is regenerated at the end of the Calvin cycle to allow the cycle to continue?

Accepted Answer

RuBP

Question 19

If the stomata of a leaf are closed during a hot day, what is the most likely effect on photosynthesis?

Accepted Answer

Photosynthesis will decrease due to limited carbon dioxide intake

Question 20

Which of the following best explains why plants are green?

Accepted Answer

They reflect green light and absorb other wavelengths

Photosynthesis: Structure, Function, and Limiting Factors

Study Guide - Practice Questions