Cellular Control

Question 1

What are transcription factors

Answer 1

Proteins which bind to the DNA and switch genes on/off or increase or decrease rate of transcription.

Question 2

Operon

Answer 2

A group of genes that function as a single transcription unit

Question 3

The Lac Operon

Answer 3

E.Coli is a bacterium that respires glucose, but it can use lactose is no glucose is available.

The genes needed to respire lactose are found on the lac operon

Question 4

lactose permease

Answer 4

allows lactose to enter the bacterial cell

Question 5

B-galactosidase

Answer 5

Hydrolysis lactose to glucose and galactose

Question 6

Hox genes

Answer 6

Found only in animals. Involved in the formation of anatomical features in correct locations of the body plan.

Question 7

Homeobox sequence

Answer 7

Sequence of 180 base pairs found within genes that are involved in regulating patterns of anatomical development with animals, fungi and plants.