Unit 3: Molecular Genetics Test Review

If a butterfly has 380 chromosomes in body cells, how many are in the gametes?

• 380
• 190
• 760
• We need to know if the organism reproduces sexually or asexually to know

If a banana has 44 chromosomes in its gametes, how many are in the somatic cells?

• 44
• 88
• 22
• We need to know if the organism reproduces sexually or asexually to know

What is the monomer of DNA?

• sugar-phosphate
• phospholipid
• nucleotide
• amino acid

Which of the following is NOT found in a nucleotide?

• sugar
• phosphate
• base
• ATP

A DNA molecule contains 160 nitrogen bases pairs. Of the total number of bases, 60 are cytosine. How many thymine bases will there be? Type your number answer below.

(a)  

What kind of bond holds the strands of DNA together?

• peptide bond
• hydrogen bond
• phosphate bond
• water bond

What kind of bond connects amino acids in a protein?

• peptide bond
• hydrogen bond
• phosphate bond
• water bond

If you are provided the following DNA sequence, what amino acid sequence does it mean? GCG CAA CTG ATA

• arg-val-asp-tyr
• ala-val-val-ile
• ile-gln-leu-leu
• cys-ala-val-tyr

The first step of protein synthesis is ___ and this is when ___ happens.

• DNA replication; copying the DNA
• Translation; rewriting the DNA message
• Transcription; finding the amino acid sequence
• Transcription; rewriting the DNA message
• Translation; finding the amino acid sequence

The last step of protein synthesis is ___ and this is when ___ happens.

• DNA replication; copying the DNA
• Translation; rewriting the DNA message
• Transcription; finding the amino acid sequence
• Transcription; rewriting the DNA message
• Translation; finding the amino acid sequence