Higher Biology 1.1 DNA Structure

A nucleotide includes...?

• deoxyribose sugar

• base

• phosphate group

• all of the above

In DNA, Adenine bonds with ______________.

• Guanine

• Cytosine

• Thymine

• Adenine

Guanine bonds with ______________.

• Adenine

• Cytosine

• Guanine

• Thymine

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

• deoxyribose sugar and adenine

• sugar and the nucleus

• deoxyribose sugar and a hydrogen bond

• deoxyribose sugar and phosphate

Which shows the correct complementary base pairing for DNA?

• C-A, T-G

• C-G, U-A

• A-G, C-T

• T-A, G-C

What does DNA stand for?

• Deoxyribonucleic acid

• Denitrogenous acid

• Deribonucleic acid

• Diribonucleic acid

What is responsible for holding the two strands of the DNA double helix together?

• hydrogen bonds

• other interactions

• strong chemical bonds

• deoxyribose sugars

Name this structure

• double helix

• twisted ladder

• nucelotide

• hydrogen bond

Which sequence of DNA bases would pair with this partial DNA strand:

ATG TGA CAG

• ATG TGA CAG

• GTA AGT GAC

• TAC ACT GTC

• CAT TCA CTG

What term describes the feature that the two DNA strands run in opposite directions?

• Semi- Conservative

• Anti-Parallel

• Double Helix

• Back to back