Miesfeld Chapter 18

Miesfeld Chapter 18

University

9 Qs

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Miesfeld Chapter 18

Miesfeld Chapter 18

Assessment

Quiz

Science

University

Hard

Created by

Natalie Lenard

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Uric acid is an example of a _________.

a.nucleotide
b.ribonucleoside
c.pyrimidine
d.purine
e.tyrosine derivative

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which nucleotide is required to make AMP?

a.CTP
b.GTP
c.TTP
d.UTP
e.NTP

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

IMP is the precursor for which of the following nucleoside monophosphates?

A.AMP.
B.GMP.
C.XMP.
D.A and B.
E.All of the above.

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following statements is true regarding regulation of purine nucleotide biosynthesis?

A.Glutamine-PRPP amidotransferase is inhibited by purine monophosphates.
B.IMP dehydrogenase is inhibited by AMP.
C.Adenylosuccinate synthetase is inhibited by ATP.
D.A and C are correct.
E.All the above statements are correct.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The N7 in the purine ring is contributed by which of the following molecules?

A.Aspartate
B.Glycine
C.Glutamate
D.Glutamine
Arginine

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The N3 in the pyrimidine ring is contributed by which of the following molecules?

A.Aspartate
B.Glycine
C.Glutamate
D.Glutamine
E.Arginine

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Allipuronol is an agent used in the treatment of chronic gout. Which of the following enzymes does it inhibit?

A.Xanthine oxidase
B.Ribonucleotide reductase
C.Adenosine deaminase
D.Urate oxidase

8.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following statements is correct for the regulation of aspartate transcarbamoylase (ATCase)?

A.This enzyme is regulated in both mammals and bacteria.
B.In bacteria ATCase is activated by PRPP.
C.In mammals ATCase is activated by ATP.
D.In bacteria ATCase is allosterically regulated by CTP.
E.In mammals ATCase is inhibited by UTP.

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following donates the methyl group used in the formation of dTMP from dUMP?

A.Serine
B.5,10-Methylenetetrahydrofolate
C.Folate
D.Dihydrofolate
E.Formate