Quiz Fall 2. Chemistry - Biochemistry

In protein synthesis formation of new peptide bonds is catalyzed by

How many main types of chemical bonds exist?

DNA is much more stable to alkaline hydrolysis than RNA because: a. DNA is usually protected by proteins, while RNA is not

4

An RNA-dependent DNA polymerase that carries the RNA template with it to synthesize repeats at the 3'-ends of chromosomes is called:

5

Consider the molecule represented below

in Chemistry

Which of the following is a characteristic of the substance represented here?
a.
alkene
b.
cis isomer
c.
melting point different than
<img src="data:image/png;base64,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

6

Which of the following causes pyruvate dehydrogenase kinase to catalyze the phosphorylation and inactivation of E1 in the pyruvate dehydrogenase complex?

7

When we say that the efficiency of glycolysis is about 33% we mean that

8

This diagram refers to a:

9

In animals, ______ cannot be used for glucose production.

10

Which of the following reactions represents the gluconeogenic alternative to the irreversible reaction of PFK-1 in glycolysis?

11

As student doing a titration of HNO3 with sodium hydroxide wanted to use methyl orange as an indicator. Methyl orange changes color at pH = 3.7 . Which of the following will be true of this experiment?

12

Which of the following is an example of a unilamellar vesicle?

13

Integral membrane proteins can be inserted into the membrane and folded into the normal 3D structure during translation

14

The basic structure of biological membranes is provided by what class of compounds?

15

Which of the following statements about electrostatic interactions is false? a. They arise either as electrostatic attractions between opposite charges or repulsions between like charges

16

Which of the following best explains the hydrogen bonding that occurs in water?

17

One would expect that defects in the globin genes would be so serious as to cause death in utero. Which of the following explains how some thalassemias are found in living people?

18

The pH profile of an enzyme can help identify specific amino acids in the active site because:

19

Which of the following statements concerning small nuclear RNA is true?

20

The equilibrium for isomerization of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate is favored because

21

All of the following are inhibitors of citrate synthase EXCEPT:

22

Which of the following curved arrows correctly describes the second step in the reaction of propene with hydrogen bromide?

in Chemistry

a.

b.

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23

________ of specific RNA nucleotides in a process known as RNA editing is a mechanism of altering the protein product encoded by some genes in mammals

24

The conversion of acyl-CoA to acylcarnitine is inhibited by _______________.

25

Which of the following enzyme types is involved in both fatty acid synthesis and breakdown?

26

All are components of the lac operon EXCEPT:

27

When the methyl-directed repair system detects a mismatch in dsDNA it:

28

Choose the correct answer from the list. Not all the answers will be used.

in Chemistry

A) fumarate
B) NADPH
C) salvage
D) uric acid
E) reduction
F) analogs
G) iron
H) allopurinol
I) IMP
J) xanthine
K) antifolate
L) suicide

1. The precursor to AMP and GMP is ______.
2. When aspartate donates its amino group in purine biosynthesis, ______ is eliminated.
3. Purines can be reincorporated into nucleotides via _____ pathways.
4. Deoxyribonucleotides are synthesized by ______ of a ribonucleotide’s 2 carbon.
5. Class I ribonucleotide reductases (RNR) contain a(n) ______ prosthetic group.
6. The electrons used to convert an NDP to a dNDP ultimately come from ______.
7. Mechanism-based inhibitors are also called _____ substrates.
8. ______ compounds are effective anticancer agents.
9. Purines are degraded to ______.
10. Gout is treated using the compound ______.

29

Which of the following are packed around the HIV genome?

30

Which of the following best describes the structure of RNA-DNA hybrids?

31

At physiological pH, the carboxylic acid group of an amino acid will be ________, while the amino group will be ________, yielding the zwitterion form

32

If an inhibitor changes the slope of the Lineweaver-Burk graph, but not the y-intercept, it is this type of inhibition:

33

Degradation of bacterial mRNAs occurs:

34

Palmitic acid, with 16 carbons, requires 8 cycles of β-oxidation to produce 8 acetyl-CoA

35

A lactone is a cyclic

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Quiz Fall 2. Chemistry - Biochemistry

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