Biology Unit 1 Book 1

Question 1

Somatic cell

Answer 1

Any cell in the body other than gametes

Question 2

Germline cell

Answer 2

Cells involved in reproduction

Gametes

Question 3

What do somatic cells divide by

Answer 3

Mitosis to form more somatic cells

Question 4

What do germline cells divide by

Answer 4

Meiosis and meiosis

Question 5

Mitosis in germline cels

Answer 5

Forms more gametes

Question 6

Meiosis in germline cells

Answer 6

Produces haploid gametes

Question 7

What is cellular differentiation

Answer 7

The process by which a cell expresses certain genes to produce particular protein characteristics for that type of cell, this allows the cell to carry out specialised functions

Question 8

Why can embryonic stem cells differentiate into all kinds of cells

Answer 8

All the genes can be switched on so they can differentiate into that type of cell

Question 9

What can stem cells be used to researc

Answer 9

Model cells to study how diseases work, drug testing

Question 10

What processes does stem cell research provide for

Answer 10

Cellular growth, differentiation, gene regulation

Question 11

Ethical issues of stem cell research

Answer 11

Involves destruction of embryos potential life

Question 12

What does ligase do

Answer 12

Joins fragments of dna together