DNA And Proteins

Question 1

The order of DNA bases determines the…..

Answer 1

Amino acid sequence =

AT GC

Question 2

Amino acid sequence determines the…..

Answer 2

Protein that will be produced -

BAP = base pairs, amino acids, proteins

Question 3

Structural proteins include….

Answer 3

Keratin which is found in the skin, hair and nails

Question 4

Proteins can be………

Answer 4

Hormones which act as chemical messengers as they are produced in one site of the body but act on another site in the body e.g insulin

Question 5

mRNA carries the copy of the DNA genetic code from

Answer 5

The nucleus into the ribosome ( site of protein synthesis) in the cytoplasm of a cell

Question 6

What are antibodies?

Answer 6

Made up of protein which aid in the fight against infection

Question 7

Gene codes for a particular protein by making….

Answer 7

A messenger molecule (mRNA) which is complementary to a strand of DNA

Question 8

What genetic materials make up a plasmid?

Answer 8

DNA. In a bacterial cells the DNA is found in a circular plasmid.

Question 9

Examples of substances which can be produced from genetic engineering

Answer 9

Insulin, human growth hormone and factor VIII

Question 10

Stages involved in genetic engineering

Answer 10

1. Identify gene
2. Cut DNA with enzymes
3. Plasmid removed
4. Plasmid cut open and gene inserted
5. Enzymes seal the cut ends
6. Transform into bacterial cell
7. Multiplication of bacteria
8. Removal of product

Question 11

Advantages of Genetic engineering :

Answer 11

1. Large quantities of product

2. Wide range of substances

Question 12

Disadvantages of genetic engineering:

Answer 12

1. Cost of development is expensive

2. Possible harmful effects of GE bacteria released into ecosystem

Question 13

Where is DNA is found in …..

Answer 13

The nucleus of cells and is a double helix