2E - Gene Expression

Question 1

gene regulation

Answer 1

The control of a gene expression, typically achieved by switching transcription on or off.

Question 2

regulatory gene

Answer 2

A segment of DNA responsible for producing proteins that control the expression of other genes.

Question 3

repressor protein

Answer 3

A protein coded for by a regulatory gene that prevents gene expression by binding to its operator in the case of an operon.

Question 4

activator protein

Answer 4

A protein coded for by a regulatory gene that increases gene expression.

Question 5

operon

Answer 5

A cluster of linked genes that all share a common promotor and operator and are transcribed at the same time.

Question 6

conformational change

Answer 6

A change in the three-dimensional shape of macromolecules such as proteins.

Question 7

structural gene

Answer 7

A segment of DNA that doesnt code for regulatory proteins, but instead codes for proteins that play a role in the structure or function of a cell or organiam.