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Lac Operon

Authored by Lisa Thompson

Science

11th Grade

NGSS covered

Used 2+ times

Lac Operon
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the lac operon the inducer is

allolactose

glucose

galactose

all of the above

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The lac operon is an example of an inducible operon. Which of the following describes the process that occurs when lactose is present?

The lactose binds to the repressor which inactivates it and the repressor binds to the operator to turn translation on.

The lactose binds to the repressor which activates it and the repressor releases from the operator to turn translation on.

The lactose binds to the repressor which inactivates it and the repressor releases from the operator to turn translation on.

The lactose binds to the repressor which activates it and the repressor binds to the operator to turn translation on.

Tags

NGSS.HS-LS3-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

regulator

repressor

activator

corepressor

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Operons are found in which of the following organisms?

Bacteria(prokaryotes)

plants and animals(eukaryotes)

only animals

virsuses

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An operon consists of all the the following EXCEPT

operator

promoter

regulatory gene

genes of the operon

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is 1 in the diagram?

RNA polymerase

Inducer

Repressor

Operator

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is 4 in the diagram?

RNA polymerase

Inducer

Repressor

Operator

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