Free Printable DNA, Replication, Central Dogma

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DNA, Replication, Central Dogma

Total questions: 20

Worksheet time: 15mins

Name

Class

Date

Which do DNA and RNA have in common?

Both are double stranded.

Both contain ribose molecules.

Both contain phosphate groups.

Both contain uracil.

If the structure of DNA were likened to a ladder, what would make up the “supporting structure” (not the “rungs”) of the ladder?

amino acids and sugars

nucleotide bases, including thymine

nucleotide bases, including uracil

sugar-phosphate molecules

What is the complimentary mRNA sequence to the DNA sequence A-T-T-G-C-A.

T-A-A-C-G-T

U-A-A-C-G-T

U-A-A-C-G-U

T-A-A-G-C-U

Which defines a codon in mRNA?

pair of nucleic acid and sugar

pair of phosphate and sugar

three-base code

two-base code

What are the building blocks of proteins called?

DNA

RNA

Ribosomes

Amino Acids

The "central dogma" states that genetic information flows from

Protein-->mRNA-->DNA

Protein-->DNA-->mRNA

mRNA-->DNA-->Protein

DNA-->mRNA-->Protein

Transcription takes place in the

cytoplasm

ribosome

mitochondrion

nucleus

The anticodon of a particular tRNA molecule is

complementary to the corresponding mRNA codon.

complementary to the corresponding triplet in rRNA.

the part of tRNA that bonds with a specific amino acid.

catalytic, making the tRNA a ribozyme.

The parts of a gene that do NOT code for amino acids in a protein are called

introns

exons

codons

anticodons

10.

The production of mature mRNA in eukaryotes involves

cutting introns out and splicing exons together

adding the 5' cap

adding the 3' poly A tail

all of these are correct

11.

Translation occurs:

Outside of the Nucleus

Inside of the Nucleus

12.

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

A copy of chromosomal DNA is created

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

A RNA copy of a DNA strand is made.

Instructions from DNA in the nucleus are brought to the cytoplasm

13.

Smaller segments of RNA nucleotides that transport amino acids to the ribosomes.

mRNA

tRNA

rRNA

DNA

14.

Which enzyme joins the Okazaki fragments in the lagging strand?

Helicase

DNA Polymerase

Ligase

Primase

15.

This picture is illustrating the ____ nature of DNA.

antiparallel

semiconservative

helical

radioactive

16.

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.

17.

What are the monomers of DNA?

amino acids

nucleotides

fatty acids

simple sugars

18.

What enzyme keeps DNA from overwinding ahead of replication forks?

Primase

Topoisomerase

Single-Stand Binding Protein

Helicase

19.

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

to add modified guanine 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

to help protect the mRNA from degradation by hydrolytic enzymes

20.

If a sample of DNA contains 20% Thymine nucleotides, what percentage of the sample would be Cytosine nucleotides?

20%

30%

40%

60%

100 %

DNA, Replication, Central Dogma

Total questions: 20

Worksheet time: 15mins

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