B1.2.1

Question 1

What is each long molecule of DNA

Answer 1

A chromosome

Question 2

What is a gene

Answer 2

The short sections of DNA that code for characteristic are called genes.

Question 3

What does DNA code for

Answer 3

The code a gene contains causes specific proteins to be made. These proteins determine the cells function.

Question 4

What do combinations of genes do

Answer 4

Combinations of genes in an organism controls how the organism functions and what it looks like.

Question 5

Structure of DNA

Answer 5

DNA is made up of two strands the two strands are joined together by bases. They are twisted together forming a double helix. DNA is a polymer as it’s made up of smaller nucleotides.

Question 6

What are nucleotides made from

Answer 6

They are made up of a sugar (deoxyribose) a phosphate and a base.

Question 7

What are the 4 bases

Answer 7

Adenine, Guanine, Thymine, Cytosine

Question 8

Base pairs

Answer 8

Adenine always bonds to thymine
Cytosine always bonds with guanine