Key Area 1.1 - Structure Of Dna

Question 1

Adenine

Answer 1

Base that pairs with thymine in DNA (and uracil in RNA)

Question 2

Anti parallel

Answer 2

Parallel strands in DNA running in opposite directions

Question 3

Base

Answer 3

Nitrogenous substance that is a component of a DNA nucleotide

Question 4

Chloroplast

Answer 4

Organelle in which the chemical reactions of photosynthesis occur

Question 5

Chromosome

Answer 5

Structure that contains the genetic material of an organism encoded into DNA

Question 6

Cytosine

Answer 6

Base that pairs with guanine in DNA

Question 7

Deoxyribose

Answer 7

Pentose sugar that is a component of a DNA nucleotide

Question 8

DNA

Answer 8

Deoxyribonucleic acid; a molecule that holds the genetic code in living organisms

Question 9

Double helix

Answer 9

3D shape of a DNA molecule

Question 10

Eukaryotic

Answer 10

Cell with a discrete nucleus

Question 11

Guanine

Answer 11

Base that pairs with cytosine in DNA

Question 12

Hydrogen bond

Answer 12

Weak chemical link joining complementary base pairs in DNA

Question 13

Mitochondria

Answer 13

Cell organelles in which the aerobic stages of respiration occur

Question 14

Nucleotide

Answer 14

Component of DNA consisting of a deoxyribose sugar, a phosphate group and a base

Question 15

Phosphate

Answer 15

Component of a DNA nucleotide that is derived from phosphoric acid

Question 16

Plasmid

Answer 16

Circular loop of genetic material found in prokaryotic organisms and some yeasts

Question 17

Prokaryotic

Answer 17

Cell that has no discrete nucleus

Question 18

Protein

Answer 18

Large molecule made up from a chain of amino acids linked by peptide bonds

Question 19

Sugar - phosphate backbone

Answer 19

Strongly bonded strand of DNA

Question 20

Thymine

Answer 20

Base that pairs with adenine in DNA