Module 2 - Stem Cells

Question 1

What are stem cells

Answer 1

Unspecialised cells

Question 2

What is the process by which stem cells become specialised cells

Answer 2

Differentiation

Question 3

What are 4 specialised cells in animals

Answer 3

Sperm cell
Erythrocytes
Epithelial cell
Neutrophils

Question 4

How are neutrophils adapted for their function

Answer 4

They have a flexible shape which allows them to engulf pathogens easily
They contain lysomes in their cytoplasm which can break down engulfed particles

Question 5

How are red blood cells adapted for their function

Answer 5

Concave shape which allows large surface area for gas exchange
No nucleus so more room for haemoglobin

Question 6

How are sperm cells adapted for their function

Answer 6

Have a tail to swim
A lot of mitochondria to provide energy to swim
Contain digestive enzymes to penetrate the surface of the egg

Question 7

How are palisade mesophyll cells adapted

Answer 7

Contain many chloroplasts to absorb sunlight

Walls are thin to allows quick co2 diffusion

Question 8

What is the definition of a tissue

Answer 8

A tissue is s group of specialised cells working together to carry out a particular function.

Question 9

What is the definition of an organ

Answer 9

A group of different tissues working together to perform a particular function

Question 10

What is an organ system

Answer 10

Organs working together for s particular function