final exam

Question 1

When hydrochloric acid is added to water it completely dissociates, and a
considerable rise in the temperature of the solution can be detected. Therefore the
dissociation of HCl must be

Answer 1

exergonic and exothermic

Question 2

NMR experiments show that H14 and N92 interact by
hydrogen bonding between the backbone amide N-H and backbone carbonyl O. These
amino acids are likely in a

Answer 2

B-sheet

Question 3

Which of the molecules would be the most likely to be considered amphipathic

Answer 3

stearate

Question 4

A friend is trying to differentiate between DNA and RNA, she asks you how. You tell
her that the difference between the two is that

Answer 4

RNA has a hydroxyl group on the 2’ carbon, while DNA
only as a hydrogen on the 2’ carbon

Question 5

Red blood cells are added to a salt solution. After an hour, the cells have shrunk
considerably. Compared to salt concentration inside the cells, the salt concentration of
the solution must be

Answer 5

much higher

Question 6

Which type of bonds link nucleotides to form RNA

Answer 6

phosphodiesters

Question 7

In the concerted model, one hemoglobin subunit can be in the T-state while another is
in the R-state

Answer 7

false

Question 8

what does not directly bind to Fe2+

Answer 8

distal O

Question 9

Both glycolysis and the citrate cycle can be inhibited by

Answer 9

NADH and ATP

Question 10

What are the irreversible steps of glycolysis and the citrate cycle, respectively?

Answer 10

Glycolysis - 1,3,10; Citrate cycle - 1,3,4

Question 11

Assume 1 molecule of glucose goes through glycolysis and the products are allowed to go through the citrate cycle. What is the total net yield of electron carrier

Answer 11

10 NADH, 2 FADH2