Practice Quiz Unit 5

Which base pairs with guanine?

• Adenine

• Thymine

• Cytosine

• Guanine

Who is famous for taking photo 51?

• Watson

• Crick

• Franklin

• Chargaff

What does DNA stand for?

• Dynamic Nucleic Acid

• Deoxyribonucleic Acid

• Double Nucleotide Array

• Deoxynucleotide Acid

What is shown in the picture?

• DNA

• RNA

• Nucleic acid

• Nucleotide

In a molecule of double-stranded DNA, if you have 20% Adenine present then you would have ​ (a)   % Guanine,

​ (b)   % Cytosine, and ​ (c)   % Thymine present.

• 20
• 30
• 60
• 40
• 10

If an organism contains 30% Adenine, what percent Cytosine does it have?

• 40%
• 10%
• 20%
• 80%

A covalent bond holds the sugar and the ______________ together in a DNA strand.

Which of the following are the three components that make up a nucleotide?

• Phosphate group, glucose, amino acid
• Nitrogenous base, deoxyribose, fatty acid
• Amino acid, ribose sugar, uracil
• Phosphate, sugar, nitrogenous base

Label the nucleotide

a

b

c

Nitrogenous base

Sugar

Phosphate

Select ALL the Phosphate Group