Cell Organisation

Question 1

What are large multicellular organisms made out of?

Answer 1

Organ systems, which exchange and transport materials.

Question 2

How does a cell become specialised and when does it occur?

Answer 2

Cells become specialised by differentiation, during the development of multicellular organism.

Question 3

What is a tissue and what are some examples?

Answer 3

A tissue is a similar group of cells that work together to perform a function. Three examples are:

1) muscular tissue – contracts to move whatever it’s attached to
2) glandular tissue – makes and secretes hormones and enzymes
3) epithelial tissue – covers some parts of the body

Question 4

What are organs?

Answer 4

A group of similar tissues that work together to perform a function.

Question 5

What is an example of an organ, what type of tissues does it contain and what do they all do?

Answer 5

An example of an organ is the stomach and it contains muscular, glandular and epithelial tissue.

1) muscular – moves the stomach wall to churn up food
2) glandular – makes digestive juices to digest food e.g. enzymes
3) epithelial – lines the stomach insides and outside

Question 6

What is an organ system and what is an example?

Answer 6

A group of organs working together to perform a particular function, for example the digestive system.

Question 7

What is the digestive system made up of? (5 points)

Answer 7

1) glands – pancreas, salivary glands – produce digestive juices
2) stomach and small intestine – digest food
3) liver – produces bile
4) small intestine – absorbs small food molecules
5) large intestine – absorbs water from undigested food