The Structure of DNA

Question 1

3’ end

Answer 1

Deoxyribose end of DNA strand to which nucleotides can be added.

Question 2

5’ end

Answer 2

Phosphate end of DNA strand to which nucleotides cannot be added.

Question 3

Adenine (A)

Answer 3

Base present in DNA which is complementary to thymine.

Question 4

Antiparallel

Answer 4

The relationship between two strands of DNA with their sugar-phosphate backbones running in opposite directions.

Question 5

Cytosine (C)

Answer 5

Base present in DNA which is complementary to guanine.

Question 6

Deoxyribose

Answer 6

Sugar present in DNA.

Question 7

DNA

Answer 7

Nucleic acid present in linear and circular chromosomes.

Question 8

Double Helix

Answer 8

Two-stranded molecule of DNA wound into a spiral.

Question 9

Eukaryote

Answer 9

Advanced organism such as a plant or animal.

Question 10

Genotype

Answer 10

Genetic constitution of an organism determined by the sequence of bases in its DNA.

Question 11

Guanine (G)

Answer 11

Base present in DNA which is complementary to cytosine.

Question 12

Nucleotide

Answer 12

Basic unit of which nucleic acids are composed.

Question 13

Prokaryote

Answer 13

Simple organism such as a bacterium.

Question 14

Plasmid

Answer 14

Small ring of DNA present in prokaryotes.

Question 15

Sugar-phosphate backbone

Answer 15

Supporting structure of nucleic acid molecule formed by bonding between adjacent nucleotides.

Question 16

Thymine (T)

Answer 16

Base present in DNA which is complementary to adenine.