AP Biology Chapter 18 part 1

AP Biology Chapter 18 part 1

12th Grade

19 Qs

quiz-placeholder

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AP Biology Chapter 18 part 1

AP Biology Chapter 18 part 1

Assessment

Quiz

Biology

12th Grade

Medium

NGSS
HS-LS1-1, HS-LS1-4

Standards-aligned

Created by

Audrey Chung

Used 677+ times

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19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what is an operon?
a part of a ribsome
a part of a Rna
a unit made up of linked genes that code for proteins needed to do a specific task
needed for dna replication

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A protein that binds to the operator and blocks the RNA polymerase
regulator
repressor
activator
corepressor

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The "on/off" switch for an operon is called the
promoter
repressor
operator
gene

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the stretch of DNA where RNA polymerase binds?
operator
promoter
enhancer
origin

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the role of operons in prokaryote gene expression?
It makes the genes prokaryotes be turned on
It accounts for the regulation of gene activity in response to the needs of the cells
To make DNA for the gene
To make the gene turn of and off

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

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