Course
Biochemistry
Study Pack
Set 3 Thermodynamics Of Biological Systems
Question 1
(Multiple Choice)
Free
Given the following reaction, what can be said about the equilibrium concentrations of the components of the reaction? (do not assume that concentrations began at standard conditions)
Pyruvate + NADH + H+![Given the following reaction, what can be said about the equilibrium concentrations of the components of the reaction? (do not assume that concentrations began at standard conditions) Pyruvate + NADH + H<sup>+</sup> Lactate + NAD<sup>+</sup> ΔG°′ = −25.2 kJ/mol A) [pyruvate] > [NADH] B) [pyruvate] < [NAD<sup>+</sup>] C) [NAD<sup>+</sup>] > [NADH] D) [pyruvate] > [lactate] E) cannot determine](https://d2lvgg3v3hfg70.cloudfront.net/TB3787/11eaa634_fd9b_87b8_842f_c3c20f34668d_TB3787_11.jpg)
Lactate + NAD+
ΔG°′ = −25.2 kJ/mol
Pyruvate + NADH + H+
Lactate + NAD+
ΔG°′ = −25.2 kJ/mol
A) [pyruvate] > [NADH]
B) [pyruvate] < [NAD+]
C) [NAD+] > [NADH]
D) [pyruvate] > [lactate]
E) cannot determine
Answer
Question 2
(Multiple Choice)
Free
Which example has the greatest increase in entropy, ΔS?
A) freezing water
B) sublimation of CO2
C) melting ice
D) shattering glass
E) boiling gasoline
Answer
Question 3
(Multiple Choice)
Free
An interaction between two subunits of a protein was determined to have a ΔG°′ = −57.05 kJ/mol. What is the Keq for the reaction at 25°C?
A) 1.02
B) 1.32
C) 10−10
D) 1010
E) cannot determine from given information
Answer