B3. The genetic code Qs

Question 1

State 2 reasons why you need to make new proteins in your cells?

Answer 1

1. Growth : The body makes new cells, developing new protein tissues.
2. Repair: The body has to replace dead cells with new cells.
   Extra: Provide a large source of energy for the body.

Question 2

How does DNA carry the genetic code?

Answer 2

In a DNA molecule there are smaller sections of DNA, they are called genes. Each gene has base pairs which carry codes for specific protein.

Question 3

Explain how the genetic code controls cell activity?

Answer 3

The genetic codes controls how enzymes are made in your cells. Enzymes control all chemical reactions in your cell. So the genetic code controls all cell activity.

Question 4

Explain how Watson and Crick used data from the work of other scientists to build their model of DNA?

Answer 4

They obtained X-Ray data which showed that a DNA molecule is consisted of 2 chains wound in a double helix.

Question 5

Explain why there is always a time delay between a scientific discovery and any award, ex. Nobel Prize,…

Answer 5

They have to be proved right first.