Topic 3 genetics

Question 1

What is mitosis?

Answer 1

The process of cell division

Question 2

What is the first stage of mitosis called?

Answer 2

Interphase

Question 3

Name 2 things that happen during mitosis

Answer 3

-DNA replication
-cell makes extra sub-sellular parts

Question 4

What is the 2nd stage of mitosis called?

Answer 4

Prophase

Question 5

What is the 3rd stage of mitosis called?

Answer 5

Metaphase

Question 6

What is the 4th stage of mitosis called?

Answer 6

Anaphase

Question 7

What is the 5th stage of mitosis called?

Answer 7

Telophase

Question 8

What is the 6th stage of mitosis called?

Answer 8

Cytokinesis

Question 9

How many chromosomes do humans have, and how are they arranged?

Answer 9

46
23-from each parent

Question 10

Name 4 things proteins are used for

Answer 10

Structural components
Hormones
Antibodies
catalysts

Question 11

What is a nucleotide?

Answer 11

A nucleotide consists of alternating sugar and prosphate sections

Question 12

How many amino acids are there?

Answer 12

500

Question 13

What type of molecules are proteins?

Answer 13

Macromolecule macro-big

Question 14

How are proteins formed?

Answer 14

Polymerisation

Question 15

What are structural components?

Answer 15

Tissues such as muscle and tendons

Question 16

What do enzymes do?

Answer 16

Increase the rate of chemical reactions

Question 17

Why do we need 2 stages of protein synthesis?

Answer 17

Allows for more precise control

Question 18

What does the mRNA attach to?

Answer 18

Ribosomes

Question 19

What is an allele?

Answer 19

Different forms of a gene

Question 20

What does an allele result in?

Answer 20

Each allele results in a different protein

Question 21

What are genetic disorders?

Answer 21

Results of a problem in our gene

Question 22

Mitosis produces new cells.
Give two reasons why mitosis is important in living things

Answer 22

1.helps organisms grow
2. Helps organisms repair