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13.4 Bio

Biology

9th Grade

NGSS covered

Used 16+ times

13.4 Bio
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10 questions

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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

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

5.

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

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Operons are found in the cells of which of the following types of organisms?

prokaryotes (bacteria)
eukaryotes (plant and animals)
animals only
viruses

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?

The two different cells become mutated
The proteins expressed in each cell are different
They actually have different DNA in the two types of cells.
The genome of the different cells changes

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-4

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