DNA replication turns one strand of DNA into two new strands of DNA. What percent of each new strand is the old strand?

Half of each new DNA is the old DNA

The old strand of DNA was digested, so none

The new DNA is entirely made up of the old DNA

About every sixth base comes from the old DNA

Sometimes, DNA is called "semi-conservative." Why might this be?

The old strand is "conserved" and used to make the new strands

Uracil is "conserved" in that it is only used to make the new strands

ATP is "conserved" via the usage of facilitated diffusion

Ligase is "conserved" in that it is denatured by the process

The bonds that hold the two strands of DNA together come from...

weak hydrogen bonds between the bases

the attraction of phosphate groups

strong bonds between bases and sugars

carbon to carbon bonds in the sugar

The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?

deoxyribose sugar and phosphate group

ribose sugar and phosphate group

nitrogen base and deoxyribose sugar

Why is DNA important?

it serves as the blueprint for traits of all living things

it is very small and very complicated

because we eat it every day for energy

What are the 4 nitrogen bases?

adenine, thymine cytosine, and guanine

adenine, thymine, cytoplasm, and guanine

adenine, thymine, cytosine, and gylcerol

adenine, thymine, cytosine, and glucose

transfers amino acids to the ribosomes

provides information from DNA to ribosomes

What does the following code describe?

It describes how RNA is translated to amino acids.

It describes how DNA is transcribed to RNA.

It describes how RNA is translated to genes.

It describes how proteins are translated to RNA.

Suppose a cell had normal messenger RNA (mRNA) but no functioning transfer RNA (tRNA). How would this affect translation?

The cell would be able to carry instructions to ribosomes for coding proteins but would not be able to synthesize proteins.

The cell would be able to make mRNA but would not be able to make amino acids.

The cell would not be able to synthesize proteins because it would not be able to assemble ribosomes.

The cell would be able to transcribe DNA to RNA but would not be able to carry instructions to ribosomes for coding proteins.

As a result of a point mutation, the base cytosine (C) was replaced by adenine (A) in a sequence of mRNA. Under which circumstance does this mutation cause the protein to be significantly shorter?

The mutation introduced a stop codon into the middle of the mRNA molecule.

The mutation changed the genetic code used during translation.

The mutation occurred in a region of mRNA that is not translated.

The mutation introduced a start codon in the middle of the mRNA molecule.

Professor Marcus has identified a new species of beetle in the Amazon Rainforest. The professor then investigates the process of gene expression in the cells of the beetle. Which is an expected result of the investigation?

The processes of transcription and translation, including the genetic code, are the same in the beetle as in nearly all other organisms.

The processes of transcription and translation are unique in the beetle.

The process of translation in the beetle is similar to other organisms, but involves a unique genetic code.

The process of transcription in the beetle is similar to other organisms, but involves a unique set of nucleic acids in mRNA.

Proteins are assembled at ribosomes using mRNA as a template. Which property of tRNA allows it to assist in this process?

Each of many tRNA molecules contains an anticodon, and it binds to a specific amino acid.

Each of many tRNA molecules contains an anticodon, and it may bind to any amino acid.

One tRNA molecule contains all of the anticodons and binds to all of the amino acids that are specific for the protein.

One tRNA molecule contains all of the codons and binds to all of the nucleotides that are specific for the protein.

Several differences between DNA and RNA allow the cell to differentiate between the two molecules, ensuring that transcription and translation occur appropriately. Which is one of the properties of RNA that differentiates it from DNA?

RNA contains uracil (U) instead of thymine (T).

RNA includes phosphate groups instead of nitrogenous groups.

RNA is double stranded instead of single stranded.

RNA contains cytosine (C) instead of guanine (G).

What could be inferred from Griffith’s experiments?

The heat-killed, disease-causing bacteria passed something to the harmless bacteria, because the harmless bacteria alone did not cause pneumonia.

All bacteria cause pneumonia, because all mice that were injected with living bacteria died.

Heat-killed, disease-causing bacteria cause pneumonia, because the mouse injected with these bacteria plus harmless bacteria died.

Harmless bacteria cause pneumonia, because the mouse injected with these bacteria plus heat-killed, disease-causing bacteria died.

Before a cell divides, it must duplicate its DNA. Which of the following best describes DNA replication?

The two strands of a DNA molecule separate, and a complementary strand is synthesized from each original strand.

The two strands of a DNA molecule separate, and an exact copy of each strand is synthesized.

The two strands of a DNA molecule unwind, and an exact copy of one strand is synthesized.

The two strands of a DNA molecule unwind, and a complementary strand is synthesized from one of the original strands.

What characteristic of the structure of DNA allows DNA to carry coded genetic information?

the sequence of nitrogenous bases

the sequence of 5-carbon sugars

the quantity of phosphate groups

the quantity of each type of nitrogenous base

Oswald Avery and his team ran experiments to identify the molecule that caused the transformation that Griffith identified. The results of the experiments showed that transformation could be caused by which type of molecule?

either proteins or DNA, but not lipids

either proteins, DNA, or lipids

A scientist used a radioactive isotope of nitrogen to label the nitrogenous bases of the DNA in bacterial cells. The labeled cells were then allowed to grow and divide for one generation in a medium of non-radioactive nitrogen. Where is the radioactive nitrogen in the DNA of the cells?

in one strand of the DNA of all of the cells

distributed evenly among all of the DNA

in both strands of the DNA of half of the cells

in one strand of the DNA of half of the cells

Copies of the enzyme DNA polymerase work together to synthesize DNA. Why are two copies of the enzyme necessary at each replication fork?

Each copy attaches to one strand, and each synthesizes a complementary strand.

One copy breaks apart the original DNA molecule, and the other copy synthesizes two complementary strands.

One copy synthesizes two complementary strands, and the second copy edits or corrects the new strands if necessary.

Both copies attach to the same strand, where they work together to synthesize the complementary strand.

In the Hershey-Chase experiment, radioactive phosphorus was used to label and track the DNA of a bacteriophage. Why was phosphorus, and not another element in DNA, the best choice for the radioactive label in this experiment?

Phosphorus is part of DNA, but not proteins.

Phosphorus atoms form strong bonds with other atoms.

Phosphorus readily forms compounds with other elements.

Phosphorus is part of both DNA and proteins.

DNA Test Review

Quiz

•

Biology

•

9th - 12th Grade

•

Practice Problem

•

Hard

•

NGSS

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

+2

Standards-aligned

Laura Brunner

Used 57+ times

FREE Resource

34 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

In what process is mRNA synthesized?

Transcription

Translation

DNA Replication

Mitosis

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

How many nucleotides equal 1 amino acid?

1

2

3

4

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the purpose for anti-codons?

to ensure the correct amino acid is dropped off

to match the strand of DNA

to decode a sequence of 4 nucleotides into an amino acid

to make me hate biology

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

TRANSCRIBE this DNA sequence: TACGTTACT

AUGCAAUGA

ATGCAATGA

AUGGATUGA

TACGTTACT

Does the order of amino acids in a protein matter?

YES!

NO!

A DNA nucleotide may be made up of a phosphate group, along with

deoxyribose sugar and uracil

ribose sugar and cytosine

deoxyribose sugar and thymine

ribose sugar and adenine

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In RNA, Uracil pairs with ______.

cytosine

adenine

guanine

thymine

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34 questions

In what process is mRNA synthesized?

How many nucleotides equal 1 amino acid?

What is the purpose for anti-codons?

TRANSCRIBE this DNA sequence: TACGTTACT

Does the order of amino acids in a protein matter?

A DNA nucleotide may be made up of a phosphate group, along with

In RNA, Uracil pairs with ______.

The process to go from DNA to mRNA is _______

The process to go from mRNA to a protein is called ____

Which component of DNA determines the traits of an organism?

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