Unit 5 Test Genetics Corrections

What is the amino acid sequence for: CAG UAU CAA

• Met Thr Arg
• Ala Val Arg
• Gln Tyr Gln

Which enzyme is responsible for unzipping DNA?

• polymerase
• ligase
• helicase
• primerase

The new molecule of DNA is referred to as...

• conservative
• daughter molecule
• non conservative
• semi-conservative

What enzyme is responsible for building the new DNA molecule?

• ligase
• helicase
• polymerase
• primerase

DNA must stay in the ________________ of the cell.

• cell membrane
• vacuole
• cytoplasm
• nucleus

DNA replication results in two DNA molecules,

• one with two new strands and the other with two original strands
• each one with one new strand and one original strand
• each one with two original strands
• each one with two new strands

A form of DNA Polymerase creates new DNA strands from a template in all known organisms. The polymerase in each organism is adapted to different temperatures, based on where the organism lives. If an organism lives in a very warm environment, its polymerase functions at a higher temperature than a polymerase from an organism that lives in a cooler environment. A scientist is interested in studying polymerase activity to figure out which polymerase he should use in his DNA replication experiment that needs to be run at 30 °C (~86°F). He studies three different polymerases (Taq, phi29, and Bst21) and their activity at different temperatures. Which polymerase should the scientist use in his DNA replication experiment that needs to run at 30 °C?

• Bst21
• Taq
• phi29

Which enzyme is responsible for adding nucleotides ("The Builder")?

• Ligase
• Topoisomerase
• DNA Polymerase
• Primase

Why is it crucial that living things are able to replicate their DNA?

• Less copies of DNA are needed when a new cell is created
• Each cell must have its own DNA
• A cell needs multiple copies of DNA
• Only muscle cells need DNA

The DNA is found in the nucleus of what type of organisms?

• Bacteria
• Eukaryotes
• Prokaryotes
• Viruses