DNA & Protein Synthesis Review

A section of DNA that codes for a protein is called a

• nitrogen base

• thymine

• gene

• nucleotide

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NGSS.HS-LS3-1

22% of a chromosome contains cytosine. How much adenine would be present?

DNA and RNA are made of repeating building blocks called

• nitrogen bases

• nucleotides

• chromosomes

• deoxyribose

A DNA nucleotide would be made up of which of the following? Choose ALL that apply.

• A deoxyribose sugar

• A chromosome

• A phosphate group

• A nitrogen base like thymine

Human sequence - 25% A, 25% C, 25% G, 25% T

Dog sequence - 27% A, 23% C, 23% G, 27% T

Fish sequence - 19% A, 31% C, 31% G, 19% T

Based on this information, which two organisms are most closely related?

• Dog and Fish
• Human and Fish
• Human and Dog

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Which scientist duo received the Nobel Prize for discovering the structure of DNA? Choose BOTH scientists' names.

• James Watson

• Rosalind Franklin

• Francis Crick

• Maurice Wilkins

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How do the 2 meters of DNA in each cell fit into such a tiny space?

• Each cell only gets a small piece of the total DNA

• It is cut into smaller pieces

• It dissolves into a gaseous form

• It is folded up with proteins to compact it

Which enzyme is responsible for unzipping the DNA during replication?

• DNA polymerase

• RNA polymerase

• Helicase

• Catalase

What happens to a cell's DNA during S phase of the cell cycle?

• It is duplicated

• It is reduced in size

• It is into the nucleus

• It is split between two cells

Which type of RNA serves as a copy of the DNA to be translated into a protein?

• mRNA

• tRNA

• rRNA

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