Unit 6 AP Biology Review

Transcription of the structural genes in an inducible operon

• occurs continuously in the cell.

• starts when the pathwayʹs substrate is present.

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

• having different genes.

• having different genes expressed.

Tags

NGSS.HS-LS1-1

If you were to observe the activity of methylated DNA, you would expect it to

• be unwinding in preparation for protein synthesis.

• have turned off or slowed down the process of transcription.

This can inhibit transcription by blocking the binding of positively acting transcription factors to the DNA:

• enhancer

• promoter

• repressor

Which enzyme was used to produce the molecule in the Figure?

• ligase

• a restriction enzyme

Tags

NGSS.HS-LS1-6

What is the enzymatic function of restriction enzymes?

• to cleave nucleic acids at specific sites

• to add new nucleotides to the growing strand of DNA

Which of the following separates molecules by movement due to size and electrical charge?

• gel electrophoresis

• gene cloning

Restriction fragments of DNA are typically separated from one another by which process?

• gel electrophoresis

• PCR

The DNA profiles in the figure represent four different individuals. Which of the following statements is consistent with the results?

• B is the child of A and C.

• C is the child of A and B.

Tags

NGSS.HS-LS3-1

Which of the following are characteristics of plasmids? ( more than 1 answer applies)

• Circular DNA strand

• RNA strands

• Contain resistance genes

• Found in eukaryotes

• Found in prokaryotes