Cells

Question 1

What is the function of lysosomes?

Answer 1

Lysosomes break down materials that are taken into the cell or break down worn-out organelles

Question 2

What is the function of ribosomes?

Answer 2

Site for protein

Question 3

What is the function of the golgi body?

Answer 3

They modify proteins and package them in vehicles for secretion from the cell (garage truck)

Question 4

What do cells do?

Answer 4

They maintain life processes and require input of materials and the removal of waste to support efficient functioning of the cell.

Question 5

Name the 2 types of cells and how they differ.

Answer 5

Prokaryotic

• no nucleus
• simple structure and no organelles surrounded by a membrane
• unicellular with one, circular chromosome (DNA)
  eg. bacteria and archaebacteria

Eukaryotic

• one true nucleus
• nucleus stores DNA
• complex structure with membrane-bound organelles

Question 6

List 3 functions of the cell membrane.

Answer 6

• selectively permeable to ions and water molecules
• protective barrier from surrounding cells
• supports/holds the shape of the cell

Question 7

What is the function of the endoplasmic reticulum?

Answer 7

The changes between the paired membranes are used for storage or transport of materials.

Question 8

What is the function of centrioles?

Answer 8

They are a pair of cylindrical structures that are involved in the reproduction of the cell.

Question 9

What advantage does having cells so small in size provide for the human body?

Answer 9

• large SA and volume ratio

- increases rate of diffusion/substances enter and leave the cell more efficiently.