DNA - Unit 1

Question 1

What is a gene ?

Answer 1

A section of DNA which codes for a protein

Question 2

What does DNA do?

Answer 2

Codes for proteins

Question 3

How is DNA held together?

Answer 3

bases

Question 4

What are the base pairs?

Answer 4

Adenine-Thymine
Cytosine-Guanine

Question 5

What does a gene contain?

Answer 5

The instructions for making proteins

Question 6

What does the sequence of bases in a gene determine?

Answer 6

The order of sequence in a protein

Question 7

How are proteins made - extended response

Answer 7

1) DNA is found in the nucleus in the form of chromosomes
2) A specific sequence of the DNA is a gene to make a certain protein
3) the sequence of bases is copied so it can travel out of the nucleus
4) this is called the mRNA
5) mRNA takes the complimentary copy out of the nucleus and to the ribosome
6) At the ribosome the s
equence of the bases on the mRNA determines the sequence of amino acids in the new protein molecule

Question 8

What is the function of the mRNA

Answer 8

mRNA carries a complimentary copy of the DNA from the nucleus to the ribosome

Question 9

Why is the sequence of bases on DNA important to the protein?

Answer 9

The sequence of DNA bases determines the order of sequence of amino acid in final protein.

Question 10

Where is mRNA made?

Answer 10

Nucleus