Biology Cumulative Test

Which enzyme has the job of unzipping the double helix?

• Helicase
• Polymerase
• Ligase
• Primerase

If a strand reads:
3' A A A T T T C 5'
The matching strand would read...

• 5' T T T A A A G 3'
• 3' T T T A A A G 5'
• 5' A A A T T T C 3'
• 3' U U U A A A G 5'

Polymerase is able to replicate the new DNA ______ along the leading strand.

• continuously
• only in short fragments
• very slowly
• prokaryotically

Sometimes, DNA is called "semi-conservative." Why might this be?

• The old strand is "conserved" and used to make the new strands
• Uracil is "conserved" in that it is only used to make the new strands
• ATP is "conserved" via the usage of facilitated diffusion
• Ligase is "conserved" in that it is denatured by the process

Tags

NGSS.HS-LS3-2

The monomers units of DNA and RNA are

• amino acids

• monosaccharides

• nucleotides

• fatty acids

The signal that marks the end of a gene and causes transcription to stop is

• polymerase

• ligase

• a terminator

• methionine

The RNA codon AUG means

• add amino acid methionine

• start the protein here

• add the amino acid tyrosine

• end the polypeptide chain here

The transfer of genetic info from DNA to RNA is called

• translation

• transcription

• initiation

• elongation

Which of the following sequences best describes the flow of information that takes place when a gene directs the synthesis of a cellular component?

• RNA-DNA-RNA-PROTEIN

• DNA-RNA-PROTEIN

• PROTEIN-RNA-DNA

• DNA-AMINO ACID-RNA-PROTEIN

Tags

NGSS.HS-LS1-1

Translation consists of which of the following?

• conversion of genetic info from the language of nucleic acids to the language of proteins

• conversion of genetic info from DNA to RNA

• addition of nucleotides to a DNA template

• DNA replication

Tags

NGSS.HS-LS1-1