AP Biology Protein Synthesis

In both eukaryotes and prokaryotes, gene expression is primarily regulated at the level of

• transcription.
• translation
• mRNA stability.
• protein stability.

A eukaryotic gene typically has all of the following features except

• introns.
• a promoter.
• an operator.
• Distal control elements.

In which of the following would you expect to find the most methylation of DNA?

• tandem arrays for ribosomal genes
• pseudogenes
• inactivated mammalian X chromosomes
• globin genes

Muscle cells and nerve cells in one species of animal owe their differences in structure to

• having different genes
• having different chromosomes
• using different genetic codes
• differential gene expression

Tags

NGSS.HS-LS1-4

Which of the following statements concerning the eukaryotic chromosome is false?

• It is composed of DNA and protein.
• The nucleosome is the most basic structural subunit.
• The number of genes on each chromosome is different in different cell types.
• It consists of a single linear molecule of double-stranded DNA.

What is the anticodon on the object labeled I?

• try
• met
• AUG
• GUA

What process is summarized in the diagram?

• protein synthesis in eukaryotes
• protein synthesis in prokaryotes
• replication in eukaryotes
• replication in prokearyotes

Tags

NGSS.HS-LS1-1

In the mRNA sequence: AUGUGGAACAGAUAC, what would happen if in the last codon, Guanine was substituted with Cytosine? 

• A stop codon would be inserted
• A frameshift mutation would occur
• A stop codon would be removed
• Valine would be substituted for tyrosine

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

A single substitution in the third position would have the greatest probability of mutational effect on which codon?

• GUU
• AUU
• CGU
• AUG

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Which amino acid has the greatest number of codons?

• Leucine
• Proline
• Tryptophan
• Glutamic Acid