Unit One Key Area One

Question 1

Advanced organism such as a plant or an animal

Answer 1

Eukaryote

Question 2

Simple organism such as a bacterium

Answer 2

Prokaryote

Question 3

Small ring of DNA present in Prokarotes

Answer 3

Plasmid

Question 4

Phosphate end of DNA strand to which nucleotides cannot be added

Answer 4

5 ‘ (prime) end

Question 5

Deoxyribose end of DNA strand to which nucleotides can be added

Answer 5

3 ‘ (prime) end

Question 6

Basic unit of which nucleic acids are composed

Answer 6

Nucleotide

Question 7

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

Answer 7

Antiparallel

Question 8

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

Answer 8

Sugar-Phosphate backbone

Question 9

the sugar present in DNA

Answer 9

Deoxyribose

Question 10

Base present in DNA which is complementary to Guanine

Answer 10

Cytosine

Question 11

Base present in DNA which is complementary to Adenine

Answer 11

Thymine

Question 12

Base present in DNA which is complementary to Cytosine

Answer 12

Guanine

Question 13

Base present in DNA which is complementary to Thymine

Answer 13

Adenine

Question 14

Nucleic acid present in linear and circular chromosomes

Answer 14

DNA

Question 15

Genetic constitution of an organism determined by the sequence of bases in it’s DNA

Answer 15

Genotype

Question 16

Two-stranded molecule of DNA wound into a spiral

Answer 16

Double Helix

Question 17

What holds the sugar-phosphate backbone of DNA together?

Answer 17

strong covalent bonds

Question 18

What holds the bases in DNA together?

Answer 18

Weak hydrogen bonds