Q: Which equation correctly represents the overall process of photosynthesis?

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

Q: Which equation correctly represents the overall process of cellular respiration?

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

Question 1

Which of the following best describes the relationship between photosynthesis and cellular respiration in terms of their reactants and products?

Accepted Answer

Photosynthesis produces glucose and oxygen, which are the reactants for cellular respiration; cellular respiration produces carbon dioxide and water, which are the reactants for photosynthesis.

Question 2

Which equation 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

Why is photosynthesis considered an endothermic reaction?

Accepted Answer

It stores energy from sunlight in the chemical bonds of glucose.

Question 4

Where in the cell does the light-dependent reaction of photosynthesis occur?

Accepted Answer

In the thylakoid membrane of the chloroplast

Question 5

Which organisms are capable of performing photosynthesis?

Accepted Answer

Autotrophic producers such as plants, photosynthetic bacteria, algae, and some protists

Question 6

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

Accepted Answer

To use carbon dioxide, ATP, and NADPH to synthesize glucose

Question 7

Which equation correctly represents the overall process of cellular respiration?

Accepted Answer

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

Question 8

Why is cellular respiration considered an exothermic reaction?

Accepted Answer

It releases energy from glucose to produce ATP, kinetic, and heat energy.

Question 9

Which step of cellular respiration occurs in the cytoplasm and does not require oxygen?

Accepted Answer

Glycolysis

Question 10

What is the net ATP yield from glycolysis?

Accepted Answer

2 ATP

Question 11

Which process occurs in the mitochondria only if oxygen is present?

Accepted Answer

Krebs cycle (Citric Acid Cycle)

Question 12

During intense exercise, why do muscle cells switch to lactic acid fermentation?

Accepted Answer

Because oxygen supply is depleted, preventing pyruvate from entering the mitochondria

Question 13

Which of the following is TRUE about alcohol fermentation?

Accepted Answer

It produces ethanol and carbon dioxide from pyruvate.

Question 14

What is the main function of ATP synthase in both photosynthesis and cellular respiration?

Accepted Answer

To bond phosphate to ADP, forming ATP

Question 15

Which of the following best explains why energy is lost as heat at each trophic level in the energy pyramid?

Accepted Answer

Because metabolic processes release energy as heat, reducing the amount available to the next level

Question 16

Which molecule is the primary energy carrier produced during cellular respiration?

Accepted Answer

ATP

Question 17

If a plant cell is deprived of light, which process will be directly affected first?

Accepted Answer

Light-dependent reactions of photosynthesis

Question 18

Which of the following is a correct description of autotrophs?

Accepted Answer

Organisms that can harness light energy to create stored chemical energy

Question 19

A yeast cell is placed in an anaerobic environment. Which process will it use to generate ATP?

Accepted Answer

Alcohol fermentation

Photosynthesis and Cellular Respiration: Core Concepts and Processes

Study Guide - Practice Questions

Study Guide - Flashcards