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Which of the following enzymes are commonly found within viral capsids???

A.)

DNA-dependent RNA polymerase
B.)

RNA-dependent RNA polymerase
C.)

Reverse Transcriptase
D.)

Telomerase
E.)

a, b and c

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Trinidad Tremblay
Trinidad TremblayLv2
28 Sep 2019
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Related questions

1. Which of the following are characteristics of theWatson-Crick

DNA double helix? (there are more than one answer)


a. The two polynucleotide chains are coiled about a common

axis.

b. Hydrogen bonds between A and C and between G and T hold

the two chains together.

c. The purines and pyrimidines are on the inside of the

helix and the phosphodiester backbones are on the

outside.

d. Base composition analyses of DNA duplexes isolated from

many organisms have shown that the amounts of A and T are

equal as are the amounts of G and C.

e. The sequence in one strand of the helix varies

independently of that in the order strand.


2. Which of the following statements about reversetranscriptase

are correct (there are more than one answer,5 points)

a. Reverse transcriptase uses DNA as a template tosynthesize

DNA.

b. Reverse transcriptase uses RNA as a template tosynthesize

RNA.

c. Reverse transcriptase uses DNA as a template tosynthesize

RNA.

d. Reverse transcriptase is found in the virions of all RNA

tumor viruses.

e. Reverse transcriptase hydrolyzes RNA in DNA-RNA hybrid

duplexes.


3. Several dozen oncogenes are known to code for receptortyrosine

kinases. Many of these oncogenes produce mutant receptors,

whose tyrosine kinase activity is permenantly activated,this

is called,(5 points)

a. Autophosphorylation

b. Constitutively active

c. Growth factor dependency

d. a,b,c

e. None of the above


1) During prokaryotic transcription, the _________ strand is read by ___________ in the __________ direction while the ________ is made in the ___________ direction.

A) coding, RNA polymerase, 5’ to 3’, RNA, 3’ to 5’.

B) coding, RNA polymerase, 3’ to 5’, RNA, 5’ to 3’.

C) template, DNA polymerase III, 5’ to 3’, leading strand, 3’ to 5’.

D) template, DNA polymerase III, 3’ to 5’, leading strand, 5’ to 3’.

E) template, RNA polymerase, 3’ to 5’, RNA, 5’ to 3’.

1. Which of the following is the correct sequence of events (from start to finish) in cellular fatty acid oxidation?

A. Fatty acid activationà carnitine shuttleà beta-oxidation

B. Beta-oxidationà carnitine shuttleà Fatty acid activation

C. Fatty acid activationà carnitine shuttleà beta-oxidation

D. Carnitine shuttleà Fatty acid activationà beta-oxidation

2. What reaction is catalyzed by lipoprotein lipase, or lipase?

A. Hydrolysis of TAGs into fatty acids and glycerol

B. Hydrolysis of TAGs into amino acids and glycerol

C. Hydrolysis of cholesterol in to fatty acid and water

D. Hydrolysis of cholesterol into acetyl-CoA

3. How do fatty acids of different carbon lengths cross into the mitochondrial matrix for oxidation?

A. Small FAs of 10 carbons or fewer can freely diffuse through the membrane

B. Large FAs are cleaved into two smaller units that are actively transported across the membrane

C. A membrane-bound transferase catalyzes the conversion of long-chain FAs and FA-carnitine esters, which are transported across the membrane via a specific carrier

D. The breakdown of large FAs starts outside the matrix, allowing for the smaller particles to pass easily through the membrane

4. How can any RNA nucleotide be easily distinguished from a DNA nucleotide?

A. RNA nucleotides have a unique phosphodiester bond linkage

B. RNA nucleotides have uracil nitrogenous bases

C. RNA nucleotides have an -OH on the 2’ carbon of the ribose

D. RNA nucleotides cannot be easily distinguished from DNA nucleotides

5. Which of the following statement is true concerning the sequence pTACGTAACGTA?

A. This is an RNA sequence

B. In order to have a more rigid structure in a double-stranded molecule, the sequence given would need more adenosine

C. If the complementary strand were present, the number of purines would be equal to the number of pyrimidines

D. The amount of purines is equal to the amount to pyrimidines

6. Complementary base pairing is considered which level of structure?

A. Secondary

B. Tertiary

C. Quaternary

D. Primary

7. Which of the following is/are required for the polymerization reaction catalyzed by DNA polymerase III?

I. RNA primer

II. DNA primer

III. RNA template

IV. DNA template

V. NTPs

VI. dNTPs

VII. Magnesium

VIII. Calcium

A. II, IV, V, and VII

B. II, IV, VI, and VII

C. I, IV, V, and VIII

D. I, IV, VI, and VII

8. DNA polymerase I, from E. coli, has three different catalytic sites. Which of the following is NOT one of them?

A. RNA-dependent RNA polymerase

B. RNA-dependent DNA polymerase

C. DNA-dependent RNA polymerase

D. DNA-dependent DNA polymerase

9. Eukaryotes solve the problem of replicating the ends of their linear chromosomes by:

A. Using a protein as primer

B. Enzyme activity that uses an RNA template and reverse transcription in a series of repeat cycles

C. All of the listed solution

D. Terminal redundancy whereby each end of the chromosome is duplicated allowing recombination

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