Quiz about DNA to Proteins Quiz

Question 1

Choose the first three nucleotides of the complementary (matches up with) DNA strand.      CCG

Accepted Answer

GGC

Answer

GGT

Answer

CCT

Answer

TTA

Question 2

Which nucleotide base is NOT found in DNA?

Accepted Answer

Uracil

Answer

Thymine

Answer

Adenine

Answer

Guanine

Question 3

In humans, where does DNA replication (happen) take place?

Accepted Answer

nucleus

Answer

cytoplasm

Answer

ribsomes

Answer

vacuole

Question 4

During replication, the function (job) of the enzyme DNA polymerase is to

Accepted Answer

bind nucleotides together.

Answer

send messages.

Answer

receive messages.

Answer

locate replication sites.

Question 5

Choose the first three nucleotides of the complementary RNA strand.   TAG

Accepted Answer

AUC

Answer

AUT

Answer

CTA

Answer

ACG

Question 6

During transcription, what does messenger RNA (mRNA) do?

Accepted Answer

It delivers DNA's instructions for making proteins from the nucleus to the cytoplasm.

Answer

It constructs proteins out of random amino acids inside the nucleus.

Answer

It strings together two complementary DNA strands.

Answer

It strings together two complementary RNA strands.

Question 7

The central dogma states that information flows from

Accepted Answer

DNA to RNA to proteins.

Answer

RNA to DNA to polysaccharides.

Answer

DNA to polysaccharides to RNA

Answer

RNA to DNA to proteins.

Question 8

How many codon sets for amino acids are in this strand of mRNA shown below?   CGUAC

Accepted Answer

1

Answer

2

Answer

3

Answer

6

Question 9

The four types of nucleotides (A,T,C,G) that make up DNA are named for their

Accepted Answer

nitrogen-containing bases

Answer

hydrogen bonds

Answer

phosphate groups

Answer

ring-shaped sugars

Question 10

Which of the following DNA sequences is complementary to the base sequence ACCGTAT

Accepted Answer

TGGCATA

Answer

GTTACGC

Answer

UCCGTAT

Answer

CAATGCG

Question 11

The process that makes an exact copy of a cell's DNA is called

Accepted Answer

Replication

Answer

Conservation

Answer

Preservation

Answer

Synthesis

Question 12

What are the main functions (jobs) of DNA polymerase?

Accepted Answer

binds nucleotides and builds new strands of DNA

Answer

breaks hydrogen bonds and expose bases

Answer

holds DNA strands apart and attracts bases

Answer

zips and unzips the double -stranded DNA

Question 13

Which of the following events occurs directly after a DNA molecule is unzipped?

Accepted Answer

free-floating nucleotides pair up with exposed bases

Answer

mismatched nucleotide bases are identified and replaced

Answer

identical double-stranded DNA molecules are fromed

Answer

enzymes break hydrogen bonds between base pairs

Question 14

The process of making new DNA molecules is semiconservative. This means that every new DNA molecule is composed (made up) of?

Accepted Answer

one original and one new strand of DNA

Answer

two completely identical strands of DNA

Answer

one strand of DNA and one strand of RNA

Answer

two strands that mix orginal and new DNA

Question 15

When new DNA strands are formed, almost all errors are detected and fixed by? (During Proofreading)

Accepted Answer

DNA polymerase

Answer

Helicase

Answer

the sugar-phosphate backbone

Answer

Ligase

Question 16

Choose the nucleotide sequence of the RNA strand that would be complementary to the following DNA strand: GTAGTCA

Accepted Answer

CAUCAGU

Answer

UATUAGA

Answer

ACGACTG

Answer

CATCAGT

Question 17

The main function (job) of tRNA is to?

Accepted Answer

carry amino acids, line them up to form proteins, and leave to pick up new amino acids

Answer

form a portion of ribosomes, a cell's protein factories and continue building

Answer

string together complimentary RNA and DNA strands

Answer

bring amino acids from the nucleus to the ribosomes

Question 18

A primary difference between replication and  transcription is that

Accepted Answer

one makes DNA and the other makes RNA.

Answer

occurs within the nucleus of eukaryotic cells

Answer

is catalyzed by large and complex enzymes

Answer

proceeds according to careful cellular control

Question 19

What is the term for a three-nucleotide sequence (set) that codes for an amino acid?

Accepted Answer

codon

Answer

base

Answer

amine

Answer

serine

Question 20

Which phrase best describes translation?

Accepted Answer

converts mRNA into protein

Answer

produces RNA from DNA molecules

Answer

recycles tRNA molecules for reuse

Answer

catalyzes bonds between amino acids

Question 21

Where does translation happen?

Accepted Answer

In the cytoplasm on a ribosome

Answer

In the vacuole

Answer

In the cytoplasm on a lysosome

Answer

In the nucleus

Question 22

What is the function (job) of anti-codons?

Accepted Answer

To identify amino acid carried by the tRNA to ensure the correct amino acid is added

Answer

To signal the end of protein synthesis

Answer

To unzip DNA, break hydrogen bonds, and create two single strands of DNA

Answer

To prime DNA and create a starting point for DNA Polymerase

Question 23

What is the function (job) of  stop codons?

Accepted Answer

To signal the end of protein synthesis

Answer

To identify amino acid carried by the tRNA to ensure the correct amino acid is added

Answer

To unzip DNA, break hydrogen bonds, and create two single strands of DNA

Answer

To prime DNA and create a starting point for DNA Polymerase

Question 24

What is the function (job) of the enzyme Helicase?

Accepted Answer

To unzip DNA, break hydrogen bonds, and create two single strands of DNA

Answer

To signal the end of protein synthesis

Answer

To identify amino acid carried by the tRNA to ensure the correct amino acid is added

Answer

To prime DNA and create a starting point for DNA Polymerase

Question 25

What is the function (job) of the enzyme Primase?

Accepted Answer

To prime DNA and create a starting point for DNA Polymerase

Answer

To signal the end of protein synthesis

Answer

To identify amino acid carried by the tRNA to ensure the correct amino acid is added

Answer

To unzip DNA, break hydrogen bonds, and create two single strands of DNA

Question 26

What is the role of mRNA in protein synthesis?

Accepted Answer

It carries genetic information from DNA to the ribosome.

Answer

It forms the structure of ribosomes.

Answer

It transports amino acids to the ribosome.

Answer

It catalyzes the formation of peptide bonds.

Question 27

Which enzyme is responsible for adding nucleotides to a growing DNA strand during replication?

Accepted Answer

DNA polymerase

Answer

Ligase

Answer

Helicase

Answer

Primase

Question 28

What is the complementary RNA sequence for the DNA strand GCTA?

Accepted Answer

CGAU

Answer

CGAT

Answer

GCTA

Answer

GCUA

Question 29

Which of the following best describes the process of transcription?

Accepted Answer

The conversion of DNA into RNA.

Answer

The conversion of protein into RNA.

Answer

The conversion of RNA into protein.

Answer

The conversion of RNA into DNA.

Question 30

Where does translation take place?

Accepted Answer

ribosome

Answer

chloroplast

Answer

mitochondria

Answer

nucleus

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