Unit 3; Ch. 4 Test Review: ATP, Photo, Resp

Most of the energy used by life on Earth comes from

• the sun

• the rotation of the Earth

• the moon

• None of the above

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Energy flows from the sun through the living world when

• plants capture sunlight and produce sugar.

• animals eat plants.

• animals eat other animals that have eaten plants.

• All of the above

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Heterotrophs are organisms that

• produce food from inorganic molecules or sunlight

• can survive without energy

• must consume other organisms to get energy

• None of the above

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Autotrophs obtain the energy they need through the process of

• fermentation

• photosynthesis

• cellular respiration

• eating food

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ATP is called a cell's "energy currency" because

• ATP speeds up all metabolic reactions.

• ATP allows one organelle to be exchanged for another between cells.

• glucose is made of ATP.

• it is the correct form of energy needed by our cells.

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When a phosphate group is removed from an ATP molecule,

• energy is released.

• an enzyme is formed.

• energy is stored.

• activation energy is increased.

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Energy is released from ATP when the bond is broken between ___________.

• the last two phosphate groups

• adenine and ribose

• ribose and a phosphate group

• adenine and a phosphate group

Which of the following is NOT a part of adenosine diphosphate (ADP)?

• glucose

• adenine

• ribose

• two phosphate groups

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Light energy (sun) is converted to chemical energy (sugar or food) through the process of

• cellular respiration

• fermentation

• photosynthesis

• glycolysis

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The atmospheric by-product of photosynthesis is

• nitrogen

• carbon dioxide

• water

• oxygen

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