Question 1

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

Accepted Answer

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

Question 2

Which statement best describes how autotrophs and heterotrophs obtain energy?

Accepted Answer

Autotrophs produce their own food using sunlight, while heterotrophs consume other organisms for energy.

Question 3

Cellular respiration and photosynthesis are considered complementary processes because:

Accepted Answer

The products of one process are the reactants of the other.

Question 4

Which of the following best explains the global importance of photosynthesis?

Accepted Answer

It produces oxygen and organic molecules that support most life on Earth.

Question 5

How does cellular respiration contribute to the economic health of agriculture in Canada?

Accepted Answer

It allows plants to convert stored energy into usable energy for growth and crop yield.

Question 6

Which of the following correctly describes the role of ATP in cellular processes?

Accepted Answer

ATP acts as the main energy currency, transferring energy for cellular work.

Question 7

During intense exercise, muscle cells switch to anaerobic respiration. What is a direct consequence of this switch?

Accepted Answer

Lactic acid accumulates, leading to muscle fatigue.

Question 8

Which equation represents aerobic cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + Energy$$

Question 9

In industrial fermentation, which process is primarily used to produce products like ethanol and lactic acid?

Accepted Answer

Anaerobic respiration

Question 10

Which of the following is a correct comparison between matter and energy transformations in photosynthesis and cellular respiration?

Accepted Answer

Photosynthesis stores energy in glucose, while cellular respiration releases energy from glucose.

Question 11

If a forest ecosystem in Canada experiences a decrease in photosynthetic activity, what is a likely consequence?

Accepted Answer

Reduced oxygen production and lower biomass growth.

Question 12

Which molecule is converted to ATP during cellular respiration?

Accepted Answer

ADP

Question 13

Why is photosynthesis essential for aquatic ecosystems such as fisheries?

Accepted Answer

It provides oxygen and organic matter for aquatic organisms.

Question 14

Which of the following best describes the relationship between ADP and ATP?

Accepted Answer

ATP is formed by adding a phosphate group to ADP, storing energy.

Question 15

A farmer notices that crop yields are declining despite adequate water and nutrients. Which process should be investigated as a possible cause?

Accepted Answer

Photosynthesis efficiency in the plants

Question 16

Which process is responsible for converting solar energy into chemical energy?

Accepted Answer

Photosynthesis

Question 17

During cellular respiration, which molecule acts as the final electron acceptor in the electron transport chain?

Accepted Answer

Oxygen ($$O_2)$$

Question 18

Which of the following is a direct result of anaerobic respiration in muscle cells?

Accepted Answer

Production of lactic acid

Question 19

If the equation for photosynthesis is $$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$, what is the equation for cellular respiration?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + Energy$$

Question 20

Which of the following scenarios best illustrates the complementary nature of photosynthesis and cellular respiration in an ecosystem?

Accepted Answer

Plants produce oxygen and glucose, which animals use for energy and release carbon dioxide for plants.

Photosynthesis and Cellular Respiration: Matter and Energy Transformations

Study Guide - Practice Questions