Unit 3: Molecular Genetics

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

A nucleotide includes...?

• pentose sugar
• nitrogenous base
• phosphate group
• all of the above

In DNA, Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for making proteins
• because we eat it every day for energy

Which 2 molecules forms the sides (backbone) of the DNA ladder?

• deoxyribose and adenine
• deoxyribose and a hydrogen bond
• sugar and the nucleus
• deoxyribose (sugar) and phosphate

Which shows the correct complementary base pairing for DNA?

• C-A, T-G
• A-G, C-T
• C-G, U-A
• T-A, G-C

What does DNA stand for?

• Deoxyribonucleic acid
• Denitrogenous acid
• Deribonucleic acid
• Diribonucleic acid

Which pair of bases would be found in DNA?

• G-C
• A-U
• T-G
• T-U

Unlike DNA, RNA contains

• adenine
• uracil
• phosphate groups
• thymine