Metabolism & ATP-ADP Cycle

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones?

• Catalysis

• metabolism

• anabolism

• dehydration

• catabolism

Which of the following is TRUE for anabolic pathways?

• They do not depend on enzymes.

• They are usually highly spontaneous chemical reactions.

• They consume energy to build up polymers from monomers.

• They release energy as they degrade polymers to monomers.

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NGSS.HS-LS1-6

Which of the following is a statement of the first law of thermodynamics?

• Energy cannot be created or destroyed.

• The entropy of the universe is decreasing.

• The entropy of the universe is constant.

• Energy cannot be transferred or transformed.

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NGSS.HS-PS3-1

Which of the following is an example of potential rather than kinetic energy?

• a boy mowing grass

• water rushing over Padsan River

• a firefly using light flashes to attract a mate

• a food molecule made up of energy-rich macromolecules

Which of the following is considered an open system?

• an organism

• liquid in a corked bottle

• a sealed terrarium

• food cooking in a pressure cooker

Tags

NGSS.MS-ESS2-4

Which of the following is true for all exergonic reactions?

• The products have more total energy than the reactants.

• The reaction proceeds with a net release of free energy.

• Some reactants will be converted to products.

• A net input of energy from the surroundings is required for the reactions to proceed.

• The reactions are nonspontaneous.

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NGSS.HS-PS1-4

Why is ATP an important molecule in metabolism?

• Its hydrolysis provides an input of free energy for exergonic reactions.

• It provides energy coupling between exergonic and endergonic reactions.

• Its terminal phosphate group contains a strong covalent bond that when hydrolyzed releases free energy.

• Its terminal phosphate bond has higher energy than the other two.

What term is used to describe the transfer of free energy from catabolic pathways to anabolic pathways?

• metabolism

• bioenergetics

• energy coupling

• entropy

Which of the following statements is TRUE concerning catabolic pathways?

• They combine molecules into more energy-rich molecules.

• They are usually coupled with anabolic pathways to which they supply energy in the form of ATP.

• They are endergonic.

• They build up complex molecules such as protein from simpler compounds.

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NGSS.HS-LS2-5

When chemical, transport, or mechanical work is done by an organism, what happens to the heat generated?

• It is used to power yet more cellular work.

• It is used to store energy as more ATP.

• It is used to generate ADP from nucleotide precursors.

• It is lost to the environment.