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Bioenergetics & Thermodynamics

Authored by c l a i r e .

Chemistry

University

Used 22+ times

Bioenergetics & Thermodynamics
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24 questions

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1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A reaction that is exergonic will be spontaneous. True or False?

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

An endergonic reaction requires an input of energy to proceed. True or False?

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

By definition, a spontaneous reaction is one in which

energy is released

energy is absorbed

the energy change is zero

the reaction is fast

the reaction is slow

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

true

false

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

a positive or negative ΔG tells us which direction the reaction will proceed

ΔG depends on the concentration of reactants and products

ΔG is affected by temperature

ΔG is affected by pressure and pH

ΔG is negative for endergonic reactions

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which equation defines a system at equilibrium?

ΔG > 0

ΔG° = ΔG

ΔG  = 0

ΔG  = RT ln ([products]/[reactants])

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Consider these reactions:

ATP → ADP + Pi ΔG°' = −31 kJ/mol

glucose-6-phosphate → glucose + Pi ΔG°' =  −13 kJ/mol

glucose + ATP → glucose-6-phosphate + ADP ΔG°' = ?

What is the ΔG°' of the last reaction?

-44 kJ/mol

-18 kJ/mol

+18 kJ/mol

+44 kJ/mol

Answer explanation

direction of second equation is in opposite direction to combined reaction, ∆G will have opposite energy in combined reaction.

 ∆G°' = -31 + 13 = -18  kJ/mol

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