Bacteria and Gene Regulation

Bacteria are...

• unicellular

• multicellular

Tags

NGSS.MS-LS1-1

Bacteria are...

• prokaryotes

• eukaryotes

The DNA of prokaryotes is located...

• in the nucleus, surrounded by a membrane

• in the cytoplasm, without any surrounding membrane

Which of these do bacteria not have?

• cytoplasm

• cell wall

• ribosomes

• DNA

• nucleus

What is the function of ribosomes?

• store genetic material

• protect the cell

• make proteins

• stick to other bacteria

A protein that binds to the operator and blocks the RNA polymerase

• regulator
• repressor
• activator
• corepressor

The "on/off" switch for an operon is called the

• promoter
• repressor
• operator
• gene

What is the name of the stretch of DNA where RNA polymerase binds?

• operator
• promoter
• enhancer
• origin

The lac operon genes only become expressed if:

• lactose binds to the repressor
• glucose binds to the repressor
• lactose binds to the operator
• the repressor binds to the operator

In the lac operon model the genes within the operon will be expressed if:

• lactose is absent in the cell
• glucose is present in the cell
• lactose is present in the cell