AP Biology- Gene Expression

AP Biology- Gene Expression

Assessment

Assessment

Created by

David Duopah

Biology

11th - 12th Grade

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46 questions

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1.

Multiple Choice

1 min

1 pt

How do we describe transformation in bacteria? 

the creation of a strand of DNA from an RNA molecule 

the creation of a strand of RNA from a DNA molecule 

the infection of cells by a phage DNA molecule

 assimilation of external DNA into a cell

2.

Multiple Choice

1 min

1 pt

After mixing a heat-killed, phosphorescent strain of bacteria with a living nonphosphorescent strain, you discover that some of the living cells are now phosphorescent. Which observations would provide the best evidence that the ability to fluoresce is a heritable trait? 

DNA passed from the heat-killed strain to the living strain. 

Protein passed from the heat-killed strain to the living strain. 

The phosphorescence in the living strain is especially bright.

 Descendants of the living cells are also phosphorescent. 

3.

Multiple Choice

45 sec

1 pt

Media Image

In eukaryotes, proteins that help the RNA polymerase bind to the regulatory region for transcription are called ____________.

transcription factors

topoisomerase

regulatory genes

activators

4.

Multiple Choice

1 min

1 pt

Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine? 

8%

16%

31%

42%

5.

Multiple Choice

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

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