B2.1 : Organelles Flashcards
1
Q
Cell Membrane
A
- Gatekeeper
- Selectively permeable/partially permeable
- Controls what substances enter and exit the cell (only allows certain things to enter)
2
Q
Cell Wall
A
- Permeable
- Protects the cell
- Made of cellulose
- Generally only found in plant cells
- Gives it a regular shape
3
Q
Cytoplasm
A
- Jelly-like substance
- Site of chemical reactions
- Where all organelles are located
4
Q
Nucleus
A
- Controls daily activities/cell activities of the cell
- Controls cell division
- Stores genetic materials such as DNA and chromosomes that carry genes
- Brain of the cell
5
Q
Vacuole
A
- Filled with cell sap
- Helps keep the cells shape
- Stores substances
- Large central vacuole to store water and create tension
- Several small vacuoles in animal cells
6
Q
Mitochondria
A
- Location and controls of respiration of energy
- Site of cellular respiration and aerobic respiration
7
Q
Chloroplast
A
- Only found in plants
- Has chlorophyll (green pigment)
- Site of photosynthesis
- Absorbs light energy
8
Q
Ribosomes
A
- Smallest organelles
- Protein synthesizers (builders)
- Connect amino acids together to build proteins
- Located in the rough ER
9
Q
Golgi Apparatus
A
- Responsible for transporting, modifying, and packaging protein molecules
- Plant cells have hundreds
10
Q
Endoplasmic Reticulum
A
- Network
- Has ribosomes
- Involved in protein synthesising and transporting
