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

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

Question 1

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

Accepted Answer

Photosynthesis converts carbon dioxide into glucose, and cellular respiration breaks down glucose to release carbon dioxide.

Question 2

Which of the following interspecific interactions benefits both species involved?

Accepted Answer

Mutualism

Question 3

A diagram of a trophic structure shows grass, rabbits, and foxes. Which of the following correctly identifies the trophic levels of these organisms?

Accepted Answer

Grass: producer; Rabbit: primary consumer; Fox: secondary consumer

Question 4

Which of the following organisms can perform both photosynthesis and cellular respiration?

Accepted Answer

Plants

Question 5

A carbon atom is released into the atmosphere as $$\mathrm{CO_2$}$$ from animal respiration. Which sequence correctly traces its path back to being part of an animal again?

Accepted Answer

Atmosphere $$\rightarrow$$ plant $$\rightarrow$$ animal

Question 6

Which of the following is an example of commensalism?

Accepted Answer

Barnacles attaching to a whale, gaining mobility while the whale is unaffected

Question 7

Which equation correctly represents the process of cellular respiration?

Accepted Answer

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

Question 8

Which of the following best describes the role of decomposers in the carbon cycle?

Accepted Answer

They break down dead organic matter, releasing carbon dioxide back into the atmosphere.

Question 9

Which interspecific interaction is characterized by one species benefiting while the other is harmed?

Accepted Answer

Parasitism

Question 10

If a plant uses $$12$$ molecules of $$\mathrm{CO_2$}$$ during photosynthesis, how many molecules of $$\mathrm{O_2$}$$ are produced according to the general equation for photosynthesis?

Accepted Answer

12

Question 11

Which of the following is NOT a type of interspecific interaction?

Accepted Answer

Photosynthesis

Question 12

In a forest ecosystem, which organism is most likely to be a primary consumer?

Accepted Answer

Deer

Question 13

Which process is directly responsible for removing carbon dioxide from the atmosphere?

Accepted Answer

Photosynthesis

Question 14

Which of the following best explains why animals must obtain glucose from their diet?

Accepted Answer

Animals cannot perform photosynthesis to produce glucose.

Question 15

A farmer notices that after applying a pesticide, the population of both pests and their natural predators decreases. Which interspecific interaction best explains this observation?

Accepted Answer

Predation

Question 16

Which of the following is an example of competition as an interspecific interaction?

Accepted Answer

Two bird species feeding on the same type of seeds in a forest

Question 17

Which of the following equations represents photosynthesis?

Accepted Answer

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

Question 18

Which of the following scenarios best illustrates herbivory?

Accepted Answer

A caterpillar eating the leaves of a tomato plant

Question 19

If a plant absorbs 18 molecules of $$\mathrm{CO_2$}$$ during photosynthesis, how many molecules of glucose ($$\mathrm{C_6H_{12}O_6$}) $$can it theoretically produce?

Accepted Answer

3

Question 20

Which of the following best describes the flow of energy and matter in an ecosystem?

Accepted Answer

Energy flows through the ecosystem, while matter cycles.

Chapter 37: Communities and Ecosystems – Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards