Q: What is the chemical equation for photosynthesis?

$$6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{light energy} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2$$

Q: What is the chemical equation for cellular respiration?

$$\text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2 \rightarrow 6 \text{CO}_2 + 6 \text{H}_2\text{O} + \text{energy}$$

Question 1

Which of the following is an example of potential energy?

Accepted Answer

A ball resting at the top of a hill

Question 2

Which of the following statements about energy is correct?

Accepted Answer

Energy can be transformed from one form to another, but cannot be created or destroyed

Question 3

What is the 'energy currency of the cell'?

Accepted Answer

ATP (adenosine triphosphate)

Question 4

How is the energy stored in ATP released for cellular work?

Accepted Answer

By breaking the bond between the second and third phosphate groups

Question 5

Which of the following is a byproduct released when energy is converted from one form to another in living systems?

Accepted Answer

Heat

Question 6

Which process converts the chemical energy of sugars into the chemical energy used by all cells?

Accepted Answer

Cellular respiration

Question 7

Which of the following organisms are considered producers?

Accepted Answer

Oak trees

Question 8

Where does photosynthesis take place within a plant cell?

Accepted Answer

Chloroplasts

Question 9

What is the chemical equation for photosynthesis?

Accepted Answer

$$6 	ext{CO}_2 + 6 	ext{H}_2	ext{O} + 	ext{light energy} ightarrow 	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6 	ext{O}_2$$

Question 10

Which wavelength of light is primarily reflected by chlorophyll, giving plants their characteristic color?

Accepted Answer

Green

Question 11

What is the main purpose of cellular respiration?

Accepted Answer

To produce ATP for cellular work

Question 12

Which stage of cellular respiration produces the most ATP?

Accepted Answer

Electron transport chain

Question 13

Which molecule is split during photosynthesis and its atoms are incorporated into sugars?

Accepted Answer

Water ($$	ext{H}_2	ext{O})$$

Question 14

Which stage of photosynthesis does NOT require light?

Accepted Answer

Calvin cycle (light-independent reactions)

Question 15

What is the chemical equation for cellular respiration?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6 	ext{O}_2 ightarrow 6 	ext{CO}_2 + 6 	ext{H}_2	ext{O} + 	ext{energy}$$

Question 16

Which stage of cellular respiration requires the oxygen that you breathe?

Accepted Answer

Electron transport chain

Question 17

A marathon runner's muscle cells are deprived of oxygen during a sprint. Which process allows the cells to continue producing ATP in the absence of oxygen?

Accepted Answer

Anaerobic fermentation

Question 18

Which molecule shuttles electrons from the light reactions to the Calvin cycle in photosynthesis?

Accepted Answer

NADPH

Question 19

What is G3P, and in which stage of photosynthesis is it produced?

Accepted Answer

Glyceraldehyde-3-phosphate, produced in the Calvin cycle

Question 20

Which of the following best describes a photosystem?

Accepted Answer

A cluster of pigments and proteins that capture light energy

Chapter 4 Study Guide – Energy, Photosynthesis, and Cellular Respiration

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