Molecular Bio Quiz 2

A diploid human cell not undergoing cell division would have 23 chromosome pairs.

• True

• False

The above human cell would therefore have 23 molecules of DNA within the nuclear genome.

• True

• False

Extrachromosomal plasmid DNA can be found in which organelle?

• ribosome

• endoplasmic reticulum

• mitochondria

• golgi apparatus

All genes encode polypeptides.

• True

• False

One gene could encode multiple polypeptides.

• True

• False

Answer explanation

Splicing can give rise to multiple polypeptides.

Which DNA sequences of a gene are not used to encode a protein?

• intron

• exon

• ORF

• 5' UTR

Which strand of a forward strand oriented gene is used for RNA transcription?

• forward strand

• coding strand

• template strand

Genetic redundancy is bad because it means that we have genes with no job to fulfill.

• True

• False

Which of the following is an accurate difference between prokaryotic and eukaryotic genes?

• prokaryotic genes do not produce RNA whereas eukaryotic genes do

• prokaryotic genes do not produce polypeptides whereas eukaryotic genes do

• prokaryotic genes do not have an ORF whereas eukaryotic genes do

• prokaryotic genes do not have introns and exons whereas eukaryotic gene do

Eukaryotic genes are typically co-linear with RNA and protein products.

• False

• True