DNA Replication, Protein Synthesis & Gene Mutation Review

Which part of the DNA molecule contains the encoded genetic information?

Answer explanation

Genetic information is stored in the nitrogen base of the Nucleotide!

Label the diagram

a

b

c

d

e

Protein

Transcription

DNA

Translation

RNA

Answer explanation

Look carefully at the image!

What is the first step in DNA replication

• hydrogen bonds are formed between nucleotides

• DNA strands are separated

• New nucleotides are added to template stand

• hydrogen bonds are broken between nucleotides

Answer explanation

Watch the video!

Which sub-phase of the cell cycle does DNA replication happen in?

Answer explanation

During S-phase (Synthesis), DNA replication occurs and Sister chromatids are formed.

Which nitrogen base correctly pairs with Cytosine?

Answer explanation

Replicate this DNA strand

b

c

d

e

Guanine

Thymine

Cytosine

Adenine

Uracil

What amino acid does the following DNA codon code for: AGC

Answer explanation

Make sure you are reading all questions carefully!

In this one you had to transcribe the DNA code into a mRNA.

You use the mRNA codon to find the Amino Acid.

A scientist discovered a stand of genetic material in a newly discovered species. After a series of test, the scientist determined that the genetic material found was RNA. Which nitrogen base would support that data?

Answer explanation

Uracil is the only nitrogen base that is found in RNA and not DNA!

Which step of Protein Synthesis is occurring in the diagram?

AUG codes for the amino acid Methionine and AAA codes for Lysine in cucumbers. What do those two codons code for in birds?

• Valine and Aspartic Acid

• Serine and Glutamic Acid

• Isoleucine and Histadine

• Methionine and Lysine