Structure and functions of living organisms - level of organisms and cell structure

Question 1

What are the levels of organization in organisms

Answer 1

organelles –> cells –> tissue –> organs –> systems –> (organism)?

Question 2

What is the cell structure of an animal (list examples)

Answer 2

https://www.bbc.co.uk/bitesize/guides/zxm3jty/revision/1

Question 3

What is the cell structure of an plant (list examples

Answer 3

https://www.bbc.co.uk/bitesize/guides/zxm3jty/revision/2

Question 4

What is the function of a nucleus

Answer 4

Contains genetic material, including DNA, which controls the cells activities

Question 5

What is the function of the cytoplasm

Answer 5

A jelly like material where many of the chemical reactions take place

Question 6

What is the function of a cell membrane

Answer 6

It has a structure that is permeable to some substances but not others, controlling the movement of substances in and out of the cell

Question 7

What is the function of a cell wall and what is made from

Answer 7

Made from cellulose fibres and strengthens the cell and supports the plant giving it a solid structure

Question 8

What is the function of mitochondria

Answer 8

Organelles that contain the enzymes for respiration, and where most energy is released in respiration (the site of respiration)

Question 9

What is the function of chloroplast

Answer 9

Organelles that contain green pigment, chlorophyll, which absorbs light energy for photosynthesis. Contains the enzymes needed for photosynthesis

Question 10

What is the function of a ribosome

Answer 10

A tiny organelle where protein synthesis occurs

Question 11

What is the function of a vacuole

Answer 11

It is filled with cell sap to help keep the cell turgid

Question 12

Know the differences and similarities between plant and animal cells

Answer 12

(scroll down slightly)
https://www.bbc.co.uk/bitesize/guides/zpqpqhv/revision/8

Question 13

Explain the importance of cell differentiation in the development of specialized cells

Answer 13

They are important as they are able to perform specialized functions in the body

Question 14

What are the advantages and disadvantages of using stem cells in medicine

Answer 14

Disadvantages
- Cultured stem cells could be contaminated with viruses that would be transferred to the patinent
- Difficult to find donors and to carry out pocedures

Advantages
- They can be very effective and can be used to grow back organs