2024 1/26 Bio Review Quiz

What enzyme is responsible for splitting the DNA helix during replication?

• ligase
• DNA polymerase
• RNA polymerase
• helicase
• restriction enzymes

Whose work did Watson and Crick use to determine the structure of DNA?

• Hershey and Chase
• Kerr and Vogel
• Avery and Griffith
• Franklin and Wilkens

How many rings do purines have?

• 1
• 2
• 3
• 4

What enzyme adds complementary bases during DNA replication?

• ligase
• DNA polymerase
• RNA polymerase
• helicase
• restriction enzymes

The amount of guanine in an organism's DNA equals the amount of ______________ in an organisms DNA.

• cytosine
• thymine
• adenine
• helicase

What is a group of organisms of the same species that routinely interbreed?

• population
• community
• ecosystem
• biosphere

A ________ is a sequence of DNA at the beginning of the gene that signals RNA polymerase to begin transcription

• terminator
• start codon
• promotor
• polymerase signal

The enzyme responsible for making RNA is called ________________.

• DNA polymerase
• RNA polymerase
• helicase
• hydrase

A DNA subunit composed of a phosphate group, a 5 carbon sugar, and a nitrogen containing base is called

• nucleotide
• amino acid
• helicase
• mRNA

Which of the following types of RNA carries instructions for making proteins?

• cRNA
• mRNA
• rRNA
• tRNA