Catalysts — Unit test Answers

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The carbon cycle ensures that carbon is not lost. Which is another important benefit of the carbon cycle?

T
The carbon cycle helps regulate Earth's temperature.
T
The carbon cycle ensures that living things have a continual source of hydrogen.
T
The carbon cycle helps transport nutrients in bodies of water.
T
The carbon cycle ensures that there is a continual supply of water.
24

Which is released during the formation of a peptide bond?

A
a five-carbon sugar
B
an amino group
C
an amino acid
D
a water molecule
25

What is the primary function of the carbon cycle?

A
recycling the supply of carbon on Earth
B
creating macromolecules
C
recycling the supply of water on Earth
D
creating fossil fuels

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