Question

name
questions: the carbon cycle and energy
circle the correct answer.

1. the chemical energy that life requires is stored primarily in:

a. organic compounds containing carbon
b. terrestrial carbon dioxide
c. aquatic carbon dioxide
d. atp

1. what is based on carbon dioxide (co₂) which exists in the atmosphere in the form of a gas?

a. the aquatic cycle
b. the terrestrial cycle
c. the carbon cycle
d. photosynthesis

1. what is based on carbon dioxide (co₂) that has dissolved in water?

a. the aquatic cycle
b. the terrestrial cycle
c. the carbon cycle
d. photosynthesis

1. in addition to its role in moving carbon, photosynthesis also moves:

a. carbon out of the atmosphere and into water
b. carbon out of the water and into the atmosphere
c. energy from the sun into a chemical form called atp
d. none of the above

1. all animal life (including humans) are considered:

a. producers
b. consumers
c. atp
d. independent of the carbon cycle

Explanation:

Question 1

Life's chemical energy is mainly stored in organic compounds with carbon (like carbohydrates, lipids, proteins). Terrestrial/aquatic CO₂ are inorganic and not energy storage, ATP is an energy carrier but not primary storage of life - required energy in the way organic carbon compounds are.

The terrestrial cycle (part of carbon cycle) uses atmospheric gaseous CO₂. The aquatic cycle uses dissolved CO₂, the carbon cycle is the overall cycle, photosynthesis uses CO₂ but the question is about what is based on gaseous atmospheric CO₂, so terrestrial cycle.

The aquatic cycle is based on CO₂ dissolved in water (aquatic environments). Terrestrial cycle uses gaseous CO₂, carbon cycle is overall, photosynthesis is a process, so aquatic cycle matches dissolved CO₂ in water.

Answer:

A. organic compounds containing carbon

Question 2