CFA 5 Review

Why do cells need to replicate their DNA before mitosis?

• So that the two new cells have half of the chromosomes of the parent cell

• So that the two new cells produced have the same amount of genetic information as the parent cell

• To allow for crossing over during mitosis.

• So that one cell has double genetic information for protein production.

If there was a mutation in a DNA sequence, what would be impacted first?

• the order of amino acids in the protein

• the sequence of bases on the mRNA that is made from the DNA during transcription

• The substrate that binds to the DNA during translation

• Nothing would be impacted.

Transcription takes place in the _______________. Translation takes place in the _____________.

• Nucleus | Nucleus

• Nucleus | Cytoplasm

• Nucleus | Cell Membrane

• Ribosome | Nucleus

What is the correct mRNA sequence for the DNA sequence below:

GTA - AAT - CGC

• ATA - TTA - GCG

• CAU - UUA - GCG

• CAT - TTA - GCG

• CAU - UUA - ATA

What molecule is made from DNA during the process of transcription?

• mRNA

• an amino acid

• anticodon

• tRNA

Which of the pairs below is matched correctly.

• protein - fatty acids

• amino acids - nucleic acids

• monosaccharides - protein

• dna - nucleotides

Which of the following would not increase a persons chance of having a mutation.

• tanning at the beach with no sunscreen

• exposure to harmful chemicals

• getting an x-ray when you break a bone

• eating foods with GMO ingredients

During replication a T is inserted where a C was supposed to go, what type of mutation would this cause?

• insertion

• deletion

• substitution

• frameshift

If a person has 15% guanine in their DNA sequence, what percentage of thymine do they have?

• 15%

• 20%

• 35%

• 10%

What change would be most likely to produce proteins that are different than they originally produced?

• a mutation in the DNA sequence

• a message from another cell

• evolution of the golgi apparatus

• the cell got new dna from a genetically modified bacteria