Cells Flashcards
(17 cards)
Nucleus
controls cell activities
Cytoplasm
most chemical reactions take place (including anaerobic respiration)
Mitochondria
site of aerobic respiration
Cell membrane
controls the transport of substances in and out of the cell
Ribosomes
site of protein synthesis
Chloroplasts
absorbs light energy to make food (only plant)
Permanent vacuole
- filled with cell sap (water + salt) (only plant)
Cell wall
protective and made of cellulose (only plant)
What are cells?
- basic structural and functional unit of a living organism
What are the levels of organisation?
- organelle
- cell
- tissue
- organ
- organ system
- organism
What is the purpose of the cell wall
Contains cellulose to provide strength and support to the plant.
What is the purpose of the permanent vacuole
Contains cell sap to keep the cell firm
What is the purpose of the chloroplasts
Contains a green pigment called chlorophyll in which photosynthesis occurs.
What is an organelle?
a structure found within a cell which is specialised to do a particular job or function
What is a tissue?
A group of cells with similar structures working together to perform a shared function
What is an organ?
a group of tissues working together to perform a specific function
What is an organ system?
A group of organs with related functions working together to perform body functions
