gene regulation lac and trp operon AP BIO

gene regulation lac and trp operon AP BIO

University

25 Qs

quiz-placeholder

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gene regulation lac and trp operon AP BIO

gene regulation lac and trp operon AP BIO

Assessment

Quiz

Science, Biology

University

Medium

NGSS
HS-LS1-1, HS-LS3-2, HS-LS1-3

+2

Standards-aligned

Created by

Paulína Kikinderová

Used 59+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

1.     What do figures X and Y in the graphic illustrate? 1p

Transcription and translation in a eukaryotic cell (figure X) and a prokaryotic cell (figure Y).

Transcription and translation in a prokaryotic cell (figure X) and a eukaryotic cell (figure Y).

Transcription in a eukaryotic cell (figure X) and translation in a prokaryotic cell (figure Y).

Transcription in a prokaryotic cell (figure X) and translation in a eukaryotic cell (figure Y)

Tags

NGSS.HS-LS1-1

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

1.     Reformat to indicate that answer completes stem: "If glucose is absent but lactose is present, the lac operon will be____________." 1p

activated

repressed

partially activated

mutated

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

1.     What would happen if the operator sequence of the lac operon contained a mutation that prevented the repressor protein from binding the operator? 1p

In the presence of lactose, the lac operon will not be transcribed.

In the absence of lactose, the lac operon will be transcribed.

The cAMP-CAP complex will not increase RNA synthesis.

The RNA polymerase will not bind the promoter.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1.     What would happen if the operator sequence of the trp operon contained a mutation that prevented the repressor protein from binding to the operator? 1p

In the absence of tryptophan, the genes trpA-E will not be transcribed.

In the absence of tryptophan, only genes trpE and trpD will be transcribed.

In the presence of tryptophan, the genes trpA-E will be transcribed.

In the presence of tryptophan, the trpE gene will not be transcribed.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are epigenetic modifications? 1p

the addition of reversible changes to histone proteins and DNA

the removal of nucleosomes from the DNA

the addition of more nucleosomes to the DNA

mutation of the DNA sequence

Tags

NGSS.HS-LS3-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1.     Which of the following statements about epigenetic regulation is false? 1p

Histone protein charge becomes more positive when acetyl groups are added.

DNA molecules are modified within CpG islands.

Methylation of DNA and histones causes nucleosomes to pack tightly together.

Histone acetylation results in the loose packing of nucleosomes.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1.     The binding of what is required for transcription to start? 1p

a protein

DNA polymerase

RNA polymerase

a transcription factor

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