BIOL-1230 Exam 3 Review Quiz

Enzymes

• are lipoproteins

• lower required activation energy

• speed up biological chemical reactions

• become products after complexing with substrates

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NGSS.HS-PS1-2

NGSS.HS-PS1-5

Enzyme activity may be affected by

• cofactors

• temperature

• pH

• substrate concentration

• genes

The reaction ATP + H₂O → ADP + PΔG=-7.3 kcal/mole

• hydrolyzes ATP

• loses free energy

• produces adenosine triphosphate

• is endergonic

• is exergonic

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NGSS.HS-PS1-4

NGSS.HS-PS3-1

Compliance with the second law of thermodynamics presumes that

• disorder is increasing

• maintaining order in a system requires input of energy

• entropy will decrease as order in organisms increases

• heat dissipates in all systems

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NGSS.HS-PS3-4

Kinetic energy is

• doing work

• stored energy

• in chemical bonds

• energy of motion

• energy of position or state

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NGSS.HS-PS3-2

In the formula ΔG=ΔH-TΔS

• free energy decreases as entropy decreases

• entropy and free energy are inversely related

• change in enthalpy is greater than change in free energy

• temperature increase decreases free energy

• increasing enthalpy increases free energy

Chemical energy in molecules is

• kinetic energy

• potential energy

• released in an endergonic reaction

• stored in chemical bonds

• energy in motion

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NGSS.HS-PS1-4

The sum of all chemical activities in an organism is known as

• anabolism

• catabolism

• metabolism

• entropy

• enthalpy

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NGSS.HS-LS1-7

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An exergonic reaction

• releases energy

• can be spontaneous

• is a "downhill" reaction

• reduces total free energy

• produces a negative value for ΔG

• "A" is the product molecule

• "B" is the reactant molecule

• double arrows indicate a reversible reaction

• free energy is reduced

• a tendency to accumulate "B" is indicated