Unit 1 - KA1

Question 1

What does a nucleotide consist of?

Answer 1

Deoxyribose Sugar
Phosphate
Base

Question 2

What is the structure of a DNA molecule ?

Answer 2

Two strands intertwined to form a double helix.

Question 3

What holds bases together?

Answer 3

Weak hydrogen bonds

Question 4

Describe the term ‘ANTIPARRALEL STRANDS’

Answer 4

One strand has deoxyribose 3’ at one end and the other strand has phosphate group 5’ at the same end.

The strands run in opposite directions.

Question 5

What is located at the 5’ end of nucleotide

Answer 5

Phosphate

Question 6

What is DNA organised into in PROKARYOTIC cells?

Answer 6

Circular Chromosomes and Plasmids

Question 7

What time of chromosomes are found on the nucleus of EUKARYOTIC cells?

Answer 7

Linear chromosomes

Question 8

Where are circular chromosomes found in EUKARYOTIC cells?

Answer 8

Mitochondria

Question 9

Where are circular chromosomes found in green plant cells?

Answer 9

Mitochondria

Chloroplast

Question 10

Describe the linear choromosomes in Eukaryotic cells

Answer 10

Located in nucleus

Linear chromosomes are tightly coiled and packaged with associated proteins

Question 11

What type of cells also have plasmids located in their cytoplasm?

Answer 11

Some yeast species