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Chemical reactions that release energy are called ______ reactions.


A) exergonic
B) endergonic
C) catalysis
D) catalytic

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Which are the components of an ATP molecule?


A) deoxyribose,3 phosphates,1 guanine
B) ribose,2 phosphates,1 thymine
C) deoxyribose,ribose,1 cytosine
D) ribose,3 phosphates,1 adenine
E) glucose,3 phosphates,1 guanine

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In __________ reactions,the products contain more energy than the reactants.

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When an endergonic reaction is driven by the splitting of ATP molecules,such that both these reactions occur simultaneously,the two-part reaction is called a _____________ reaction.

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Which of the following activities does NOT require cellular energy?


A) Swimming movements of some types of cells
B) Driving endergonic reactions
C) Movement of organelles within cells
D) Movement of water across the cell membrane

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What happens to enzymes when the temperature increases beyond their optimal reaction requirement?

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The enzyme becomes denatured.C...

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Objects that are moving are said to possess:


A) kinetic energy
B) potential energy
C) entropy
D) living energy

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Which of the following processes does NOT use ATP?


A) Muscle contraction
B) Active transport
C) Heat production
D) Diffusion of oxygen into the blood
E) Cytoplasmic transport

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List and explain four uses for ATP in a cell.

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Answered by ExamLex AI

Answered by ExamLex AI

1. Energy for cellular processes: ATP is...

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The site on the surface of a reactant where it binds to the enzyme is called the:


A) reactive site
B) allosteric site
C) active site
D) binding site

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Distinguish between reactants,substrates,and products.

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Reactants are sometimes called...

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In reference to enzyme activities,repressors _____ the active site,while activators ________ it.


A) restore,disrupt
B) promote,disrupt
C) disrupt,restore
D) disrupt,promote
E) stimulate,repress

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Do all cells contain the same enzymes? Support your answer.

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No,different types of cells ha...

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If a ball begins to roll down an incline,its ________ energy is converted into _______ energy.

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The First Law of Thermodynamics states:


A) that energy can be changed from one form to another,but cannot be created or destroyed
B) that energy is constantly being created by entropy events
C) that energy can be used and then destroyed because of entropy's actions on it
D) that energy can be destroyed while it is producing entropy

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Which of the following factors do NOT influence the action of enzymes?


A) Temperature of the cytoplasm
B) The amount of reactant in the cell
C) pH of the cytoplasm
D) Relative humidity
E) Presence of a repressor

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The process of lowering the activation energy of a chemical reaction is called _______.

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