Unit 1.3

Question 1

What is the function of DNA

Answer 1

DNA carries the genetic information for making proteins

Question 2

Describe the structure of DNA

Answer 2

A double stranded-helix held by complementary base pairs

Question 3

What are nucleotides

Answer 3

The units or molecules that make up DNA

Question 4

Name the three parts of a DNA nucleotide

Answer 4

a sugar deoxyribose molecule, a phosphate group and a base

Question 5

Name the four bases

Answer 5

Adenine
Thymine
Cytosine
Guanine

Question 6

What are the pairing rules

Answer 6

A always pairs up with T and C always pairs up with G

Question 7

What is the genetic code

Answer 7

The code formed by the order of the bases in DNA that determines an organism’s characteristics

Question 8

What makes up the genetic code

Answer 8

The four bases make up the genetic code

Question 9

What does the base sequence determine

Answer 9

The base sequences determines the amino acids sequence in proteins

Question 10

What is a gene

Answer 10

A gene is a section of DNA which codes for a protein

Question 11

What is messenger RNA

Answer 11

messenger RNA is a molecule which carries a complementary copy of the genetic code from the DNA in the nucleus to a ribosome in the cytoplasm where the protein is assembled from amino acids