Nucleic Acids Quiz

One side of DNA is complementary to the other. What does this mean?

• It means the two strands are identical.

• It means the two strands are mirror images.

• It means the bases on one strand pair with specific bases on the other strand.

• It means the two strands are unrelated.

If one strand of DNA has the following base sequence, what are the bases on the opposite strand? C C G A A T C G A

• G G C T T A G C T

• G G C T T A G C A

• C C G A A T C G T

• T T G C C T A G C

Where is the genetic code contained in the DNA molecule?

• In the sugar-phosphate backbone

• In the sequence of nitrogenous bases

• In the hydrogen bonds between strands

• In the double helix structure

If you know that the genome of an organism contains 20% Adenine, what is the proportion of Thymine in its genome?

• 20%

• 30%

• 40%

• 60%

What is the purpose of DNA replication?

• To repair damaged DNA

• To produce identical copies of DNA for cell division

• To create genetic diversity

• To synthesize proteins

What are the DNA molecules produced during replication like compared to the original molecule?

• Identical to the original molecule

• Completely different from the original molecule

• Half identical and half different

• Only the sequence is identical

Describe the main ways that RNA is different from DNA.

• RNA contains ribose sugar, while DNA contains deoxyribose sugar.

• RNA is double-stranded, while DNA is single-stranded.

• RNA contains thymine, while DNA contains uracil.

• RNA is more stable than DNA.

What is the role of mRNA in protein synthesis?

• mRNA carries the genetic code from DNA to the ribosome for protein synthesis.

• mRNA is responsible for the replication of DNA.

• mRNA transports amino acids to the ribosome.

• mRNA forms the structure of ribosomes.

What is the amino acid sequence coded for by the DNA triplets below? TAC AAA GAT CGC ATT

• Methionine-Phenylalamine-Leucine-Arginine-Stop

• Methionine-Lysine-Glutamic Acid-Arginine-Stop

• Methionine-Lysine-Aspartic Acid-Alanine-Stop

• Methionine-Lysine-Glutamic Acid-Alanine-Stop

Tags

NGSS.HS-LS1-1

Which type of mutation results in a premature stop codon?

• Silent

• Missense

• Nonsense

• Frameshift

• Nondisjunction

Tags

NGSS.HS-LS3-2