1) In the cycling of energy and carbon through living things, plants and some other organisms use CO2 to make carbon-containing molecules, while other organisms break down those molecules and release CO2. During this process, CO2 is produced during ________ and used during ________.

A) cellular respiration; photosynthesis

B) cellular respiration; photosynthesis and cellular respiration

C) photosynthesis; cellular respiration

D) photosynthesis; photosynthesis

E) cellular respiration; cellular respiration

2) What product(s) do plants produce during photosynthesis that is/are used by humans and other animals?

A) glucose

B) oxygen

C) carbon dioxide

D) glucose and oxygen

3) What product that is required by plants do animals–as well as plants–produce during cellular respiration?

A) CO2

B) glucose

C) oxygen

D) ADP

4) Which of the following is true of plants?

A) Plants can create their own sugars using photosynthesis.

B) Plants can create their own sugars using fermentation.

C) Plants can create their own sugars using aerobic cellular respiration.

D) Plants can create their own sugars using anaerobic cellular respiration.

5) The products of photosynthesis are:

A) O2 and sugar.

B) H2O and sugar.

C) CO2 and sugar

D) O2 and CO2

6) The breaking apart of water in photosynthesis is critical to us as animals because photosynthesis:

A) generates ATP.

B) regenerates RuBP.

C) creates a food source.

D) consumes carbon dioxide.

E) produces oxygen.

7) Which of the following equations properly summarizes photosynthesis?

A) C6H12O6 + 6O2 + sunlight → 6CO2 + 6H2O

B) C6H12O6 + 6CO2 + sunlight → 6O2 + 6H2O

C) 6CO2 + 6H2O + sunlight → C6H12O6 + 6O2

D) 6CO2 + 6H2O → C6H12O6 + 6O2 + sunlight

8) The ultimate source of energy for most life on Earth is:

A) heat from the Earth.

B) the metabolic processes found in all living things.

C) the sun.

D) oxygen.

9) What two colors of light drive most of photosynthesis?

A) red and green

B) blue and green

C) red and blue

D) green and yellow

E) red and yellow

10) If you see a red leaf, what color(s) of light in the visible light spectrum is/are being reflected?

A) red

B) all colors except red

C) all colors

D) no colors