Which of the follwoing best describes the significance of the TATA box in eukaryotic promoters?

it is the recognition site for a specific transcription factor

it sets the reading frame of the mRNA

it is the recognition site for ribosomal binding

it signals the end of the nucleotide sequence of the gene

RNA polymerase moves in which direction along the DNA?

3' to 5' along the template strand

3' to 5' along nontemplate(coding) strand

5' to 3' along the template strand

Which of the following is an example of post-transcriptional control of gene expression?

the removal of introns and splicing together of exons

the addition of methyl groups to cytosine bases of DNA

the binding of transcription factors to a promoter

gene amplification contributing to cancer

The production of mature mRNA in eukaryotes involves

cutting introns out and spicing exons together

What is the function of the poly-A tail in mRNA?

to help protect the mRNA from degradation by hydrolytic enzymes

to add modified guanin to the 3' end of the mRNA

to indicate the site of translational termination

to code for the binding of RNA polymerase to the DNA

Which of the following events in translation is the first to occur in eukaryotes?

the small subunit of the ribosome recognizing and attaching to the 5'cap

base pairing of activated methionine-tRNA to AUG of the messenger RNA

binding of the larger ribosomal subunit to smaller ribosomal subunits

What must happen to a newly made polypeptide before it can be secreted from a cell?

its signal sequence must target it to the ER, after which it goes to the Golgi

it must be translated by a ribosome that remains free of attachment to the ER

Its signal sequence must be cleaved off

Its signal sequence must target it to the plasma membrane

Translation is crucial to the process of making proteins. Which statement best describes what takes place during translation?

Information in mRNA is converted into a sequence of amino acids in a protein

A copy of chromosomal DNA is created

A RNA copy of a DNA strand is made.

Instructions from DNA in the nucleus are brought to the cytoplasm

What is the correct description of eukaryotic chromosomes?

many linear pieces of DNA in the nucleus

many linear pieces of DNA in the cytoplasm

one circular piece of DNA in the cytoplasm

many circular pieces of DNA in the nucleus

In his work with pneumonia-causing bacteria & mice, Griffith found that

some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic.

the protein coat from pathogenic cells was able to transform nonpathogenic cells.

heat-killed pathogenic cells caused pneumonia.

the polysaccharide coat of bacteria caused pneumonia.

The elongation of the leading strand during DNA synthesis

depends on the action of DNA polymerase

progresses away from the replication fork.

occurs in the 3' to 5' direction.

E. coli cells grown on N-15 medium are transferred to N-14 medium and allowed to grow for 2 more generations. DNA extracted from these cells is centrifuged. What density distribution of DNA would you expect in this experiment?

one low-density and one intermediate-density band

one high-density and one low-density band

one high-density and one intermediate-density band

Which of the following mutations would be MOST likely to have a harmful effect on an organism?

a single nucleotide insertion downstream of, and close to, the start of the coding sequence.

a deletion of three nucleotides near the middle of a gene.

a single nucleotide deletion in the middle of an intron.

a single nucleotide deletion near the end of a coding sequence.

What is the basis for the difference in how the leading and lagging strands of DNA molecules are synthesized?

DNA polymerase can join new nucleotides to the 3' end of the preexisting strand.

Helicases and single-strand binding proteins work at the 5' end.

The origins of replication occur only at the 5' end.

DNA ligase works only in the 3' to 5' direction

How do the leading and the lagging strands differ?

The leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction.

The leading strand is synthesized at twice the rate of the lagging strand.

The leading strand is synthesized in short fragments that are ultimately stitched together, whereas the lagging strand is synthesized continuously.

The leading strand is synthesized by adding nucleotides to the 3' end of the growing strand, and the lagging strand is synthesized by adding nucleotides to the 5? end.

What is meant by the description "antiparallel" regarding the strands that make up DNA?

The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand.

The twisting nature of DNA creates nonparallel strands.

One strand is positively charged and the other is negatively charged.

Base pairings create unequal spacing between the two DNA strands

What is meant that DNA replication follows a “semi-conservative” model?

After DNA replication, each strand contains one side that is a parental strand and the other side is a daughter strand.

After DNA replication, one completed strand contains only parental DNA while the other contains only daughter DNA.

None of these identify the “semi-conservative” model.

After DNA replication, one completed strand contains a mixture of both parental DNA and daughter DNA dispersed throughout the strand.

AP Biology Gene Expression & Regulation

Quiz

•

Biology

•

11th - 12th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-LS3-2, HS-LS1-1, HS-LS3-1

+1

Standards-aligned

Used 600+ times

FREE Resource

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the flow of genetic information in cells from DNA to protein? (Central Dogma)

RNA to DNA to protein

DNA to RNA to protein

protein to DNA to RNA

RNA to protein to DNA

What is the term for making an RNA copy of DNA?

Transription

Translation

Folding

Coding

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which RNA bases would pair with TACGAA in transcription?

AUGCUU

ATGCTT

GCATCC

GCAUCC

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though they 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

In eukaryotes, DNA is tightly coiled around ____ in chromatin

Histones

Whey

Casein

Hemoglobin

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Where does transcription occur in eukaryotic cells?

Nucleus

Ribosome

Cytoplasm

Rough E.R.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In eukaryotic cells, transcription cannot begin until

the two DNA strands have completely separated and exposed the promoter.

transcription factors have bound to the promoter.

the 5' caps are removed from the mRNA.

the DNA introns are removed from the template.

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AP Biology Gene Expression & Regulation

50 questions

What is the flow of genetic information in cells from DNA to protein? (Central Dogma)

What is the term for making an RNA copy of DNA?

Which RNA bases would pair with TACGAA in transcription?

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

In eukaryotes, DNA is tightly coiled around ____ in chromatin

Where does transcription occur in eukaryotic cells?

In eukaryotic cells, transcription cannot begin until

Which of the follwoing best describes the significance of the TATA box in eukaryotic promoters?

RNA polymerase moves in which direction along the DNA?

A chemical modification of DNA that does not affect the nucleotide sequence of a gene but makes that gene less likely to be expressed.

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