DNA

Questions

Question

How many pyrimidines and purines in total occur in DNA and RNA?

A) 2, 2

B) 2, 3

C) 3, 2

D) 4, 1

Question

Which of the following are purines?

1. Adenine 2. Cytosine 3. Guanine 4. Thymine

A) 1, 2

B) 1, 3

C) 2, 4

D) 2, 3

Question

Which of the following bases is cytosine?

A) B)

C) D)

Question

Which of the following bases is adenine

A) B)

C) D)

Question

Which of the following bases is only found in DNA?

A) Cytosine

B) Thymine

C) Adenine

D) Uracil

Question

To which atom(s) of the pyrimidine is the anomeric carbon of a sugar attached?

A) 1

B) 2

C) 3

D) 4

Question

The bond that joins two nucleotides together is called a

A) amide bond.

B) peptide bond.

C) phosphodiester bond.

D) hydrogen bond.

Question

The base pairs present in DNA are:

A) A---C and C---T

B) A---C and G---T

C) A---U and C---C

D) A---T and G---C

Question

Which nucleotide sequence is complimentary to the DNA strand AGGTC?

A) UCCUG

B) TCCAC

C) CTTGA

D) TCCAG

Question

Estimate the guanine content of turtle DNA if adenine = 28.7% and cytosine = 21.3%.

A) 28.7%

B) 21.3%

C) 57.4%

D) 42.6%

Question

What is the start codon for protein biosynthesis?

A) UAG

B) UAA

C) AUG

D) UGA

Question

The steps of one cycle of PCR (polymerase chain reaction) are in order:

A) Denaturation - Annealing - Synthesis

B) Annealing - Denaturation - Synthesis

C) Annealing - Synthesis - Denaturation

D) Denaturation - Synthesis - Annealing