1.3 DNA and the production of proteins

Question 1

Describe the structure of chromosomes

Answer 1

Thread like structures found in the nucleus

Question 2

Chromosomes contain..

Answer 2

Genetic information that gives rise to an organisms characteristics

Question 3

Genetic information carries…

Answer 3

The instructions for building proteins which are essential for life

Question 4

What are genes?

Answer 4

Certain sections of DNA which code for a protein

Question 5

Describe the structure of DNA

Answer 5

Double-stranded helix molecule held together by complementary base pairs

Question 6

Name the 4 base pairs

Answer 6

Adenine
Thymine
Cytosine
Guanine

Question 7

Each base structure only fits with one other type , name the pairs

Answer 7

Adenine always pairs with thymine

Cytosine always pairs with guanine

Question 8

What are proteins made up of?

Answer 8

Amino acids

Question 9

Name the 5 proteins

Answer 9

Structural 
Hormones
Antibodies 
Receptors 
Enzymes

Question 10

Protein synthesis stage 1:

Answer 10

mRNA is synthesised making a complementary copy of the genetic code ( A,T C,G)

Question 11

Protein synthesis stage 2:

Answer 11

mRNA carries the complementary copy from the nucleus to the ribosome

Question 12

Protein synthesis stage 3:

Answer 12

mRNA binds at the ribosome and a protein is then synthesised from amino acids