DNA replication occurs at an unbelievably fast rate. Once replication is complete, we can expect to find a _____ number of mistakes.

DNA replication occurs at an unbelievably fast rate. Once replication is complete, we can expect to find a _____ number of mistakes.

A) average
B) large
C) small








Answer: C

How do mutations affect an organism?

How do mutations affect an organism?

A) they may cause the development of a disease-causing allele
B) they may cause the development of a more beneficial allele
C) they, in some cases, may have no noticeable affect
D) all of the above

Answer: D

Which of the following is not needed in order for translation to occur?

Which of the following is not needed in order for translation to occur?

A) sources of energy, including ATP
B) tRNA
C) DNA template
D) ribosomes







Answer: C

An anticodon is _____.

An anticodon is _____.

A) a set of triplet bases that is complementary to a codon triplet on mRNA
B) the DNA sequence that is complementary to a triplet codon in a mRNA molecule, for example, CTC
C) the amino acid attachment site in a tRNA molecule
D) an enzyme that specifically binds one type of amino acid to its appropriate tRNA molecule

Answer: A

______ marks the end of a gene and causes transcription to stop.

______ marks the end of a gene and causes transcription to stop.

A) Methionine
B) A terminator
C) RNA polymerase
D) RNA ligase







Answer: B

In transcription, _____.

In transcription, _____.

A) both DNA strands are used as the templates
B) the promoter region acts as an initial binding site for mRNA
C) RNA polymerase links nucleotides to form mRNA.
D) a polypeptide is formed

Answer: C