B1- cell biology

Question 1

What type of cell is bacteria?

Answer 1

Prokaryotic

Question 2

Name 5 subcellular structures that both are in animal and plant cells

Answer 2

Nucleus 
Cell membrane
Mitochondria 
Ribosomes 
Cytoplasm

Question 3

What 3 things do plant cells have that animal don’t?

Answer 3

Cell wall
Chloroplasts
Vacuole

Question 4

Where is genetic material found in
Animal cell
Bacteria cell

Answer 4

Nucleus

Cytoplasm

Question 5

What is a higher resolution light or electron microscope?

Answer 5

Electron

Question 6

What is cell differentiation?

Answer 6

When cells have changed to become specialised

Question 7

Give 2 ways a sperm cell us adapted to swim to the egg.

Answer 7

Tail

Loads of mitochondria which give energy

Question 8

What are chromosomes?

Answer 8

Coiled up DNA

Question 9

What is the cell cycle?

Answer 9

A cell splitting to become 2 cells

Question 10

What do multicellular organisms use mitosis for ?

Answer 10

To grow and develop

Question 11

Give one way that embryonic stem cells could be used to cure disease?

Answer 11

They can replace faulty cells in sick people.

Eg. Insulin-producing cells for people with diabetes

Question 12

Why might some people be against using human embryos in stem cell research?

Answer 12

Each embryo could be a human life

Question 13

What is diffusion?

Answer 13

Movement of particles from where there are lots of them to where there are fewer of them
High ~> low concentration

Question 14

How does temperature affect the rate of diffusion?

Answer 14

The higher temperature the faster they diffuse

Question 15

What type of molecules move by osmosis?

Answer 15

Water

Question 16

Name the process that plants use to take mineral ions from the soil.

Answer 16

Active transport

Question 17

Give 3 ways that exchange surfaces can be adapted for diffusion.

Answer 17

Large surface area
Moist
Thin