A1 - The 9 Cell Functions Flashcards
1
Q
What is the function of the cell membrane?
A
- transports substances in and out of the cell
- separates the interior of all cells from the outside environment and unwanted substances
2
Q
What is the function of the nucleus?
A
- The control centre of the cell
- controls all activities of the cell
- stores genetic information and DNA
3
Q
What is the function of the ribosomes?
A
- These are responsible for making proteins
- help build and repair cells and body tissues e.g. hair, skin, muscle and bone
4
Q
What is the function of the rough ER
A
It is important for protein synthesis to help the rest of the cells to function
5
Q
What is the function of the smooth ER?
A
Produces fats and releases them into cytoplasm
6
Q
What is the function of mitochondria?
A
- supplies the body with energy
- acts as a digestive system - takes nutrients and breaks them down
- when in need of energy mitochondria will reproduce by growing larger and dividing
- less energy = mitochondria dying
7
Q
What is the function of the centrioles?
A
- These are essential for cell division
- mitosis is the process where the cell divides into two identical daughter cells
- mitosis helps for growth and repair of worn out cells
8
Q
What is cell division?
A
The process of mitosis by which a cell divides into two identical daughter cells
9
Q
What is the function of the lysosomes?
A
- These digest worn out parts of the cell
- destroy bacteria and foreign materials
10
Q
What is the function of the golgi apparatus?
A
- repackage substances and transports it to other organelles
- produces lysosomes
11
Q
What is an organelle?
A
An organelle is a tiny body inside a cell which carries out its own function for example the nucleus
