DNA Structure Quiz

What sugar does DNA have in its backbone?

• Ribose

• Deoxyribose

• Glucose

• Fructose

Which molecule can only ever be found in the nucleus?

• RNA

• DNA

• Protein

• Water

A nucleotide consists of what 3 components?

• Sugar

• Phosphate Group

• Nitrogenous Base

• Hydrochloric Acid

What is the purpose of DNA?

• To insulate against the cold

• To make reactions happen quickly

• To store and transmit genes

• Structural Support

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

What shape is DNA?

• A single helix

• A crstyal

• A double helix

• Primary Structure

Which nitrogenous base does Thymine always pair with?

• Cytosine

• Guanine

• Adenine

• Uracil

A scientist analyzes a DNA molecule and discovers that 25% of its nitrogenous bases are Cytosine. How many bases must be Guanine?

• 0% Guanine

• 25% Guanine

• 50% Guanine

• 75% Guanine

After replication, what is a DNA molecule made out of?

(The Semi-Conservative Model.)

• Two new strands

• Two old strands

• One old strand and one new strand.

In this diagram, A is referring to

• nitrogen base pair

• sugar molecule

• phosphate groups

• guanine

Tags

NGSS.HS-LS1-1

In this diagram, letter G is pointing to

• cytosine

• guamine

• thymine

• adenine