genes

Question 1

A gene is a

Answer 1

base sequence of DNA that codes for the amino acid sequence of a polypeptide or a functional RNA molecule

Question 2

Functional RNA molecules are required for

Answer 2

protein synthesis

Question 3

mRNA

Answer 3

the base sequences on messenger RNA molecules are used by ribosomes to form polypeptide chains

Question 4

tRNA

Answer 4

amino acids are carried to the ribosome by transfer RNA molecules

Question 5

rRNA

Answer 5

ribosomal RNA molecules form part of the structure of ribosomes

Question 6

he shape and behaviour of a protein molecule depends on the exact sequence of these amino acids (the initial sequence of amino acids is known as the primary structure of the protein molecule)
The genes in DNA molecules, therefore, control

Answer 6

protein structure (and as a result, protein function) as they determine the exact sequence in which the amino acids join together when proteins are synthesised in a cell

Question 7

One gene codes for one mRNA molecule, which codes for one

Answer 7

polypeptide