2nd Summative Test in General Biology 1

What is bioenergetics?

• The study of living organisms

• The study of energy transfer in living organisms

• The study of biochemistry

• The study of genetics

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Which molecule is considered the primary energy currency in cells?

• ATP

• DNA

• RNA

• NADPH

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What is the primary distinction between exergonic and endergonic reactions?

• Exergonic reactions release energy, while endergonic reactions consume energy.

• Exergonic reactions only occur in plants, while endergonic reactions are exclusive to animals.

• Exergonic reactions occur in the mitochondria, while endergonic reactions take place in the cytoplasm.

• Exergonic reactions are reversible, while endergonic reactions are irreversible.

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What is the relationship between exergonic and endergonic reactions in a coupled system?

• They compete with each other.

• They occur independently in separate cellular compartments.

• Exergonic reactions provide energy to drive endergonic reactions.

• Endergonic reactions limit the progress of exergonic reactions.

Which of the following is an example of an exergonic reaction?

• Photosynthesis

• ATP hydrolysis

• Protein synthesis

• DNA replication

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In an endothermic reaction the system is releasing energy.

• True

• False

• Maybe

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If an exothermic reaction is occurring in a beaker and you hold it in your hand, it would feel _______.

• Hot

• Cold

• Both

• None of the above

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In an endothermic reaction, heat is _____.

• transferred into the system

• transferred out of the system

• transferred equally between system and surroundings.

• none of the above

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What is the primary difference between catabolism and anabolism?

• Catabolism builds molecules, while anabolism breaks them down.

• Catabolism releases energy, while anabolism consumes energy.

• Catabolism occurs in the cytoplasm, while anabolism occurs in the mitochondria.

• Catabolism is only found in plants, while anabolism is exclusive to animals.

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What is the role of ATP in metabolism?

• It is a precursor for building macromolecules.

• It is a byproduct of catabolic reactions.

• It provides energy for cellular processes.

• It inhibits anabolic pathways.

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