Cells Flashcards
1
Q
Cytoplasm
A
- most of the important activates happen here
- holds components of the cell and protecting it from damage
- stores molecules and gives the cell its shape
2
Q
Chloroplasts
A
- where photosynthesis occurs
- uses chlorophyll to make food for the cell
3
Q
Nucleus
A
- controls all the functions of the cell
- often referred to as the control centre
- contains DNA
4
Q
Vacuole
A
- stores water and dissolved substances needed by the plant
5
Q
Cell wall
A
- provides support and protection for he cell
- helps the cell keep its shape
6
Q
Cell membrane
A
- controls what enters and leaves the cell
- may also help the cell hold its shape
7
Q
What are the components of a plant cell?
A
- cytoplasm
- chloroplasts
- nucleus
- vacuole
- cell wall
- cell membrane
8
Q
What are the components of an animal cell?
A
- nucleus
- cytoplasm
- cell membrane
9
Q
Multicellular organisms…
A
- many cells with a longer lifespan
- cells can become specialised in a particular task in the body
- larger in size and more complex
- older the cell gets = the more different it starts to look
- growth occurs by the division of cells (producing 2 daughter cells)
- have special developed structures
10
Q
Unicellular organisms…
A
- depend on the 1 cell for life
- usually too hard to see with the naked eye (not all the time e.g. bacteria)
- cell cannot specialse and needs to preform all the tasks for the organism
- carry out life processes by using the internal structures (organelles)
- cannot grow larger due to the limited surface area to volume ratio
- shorter lifespan because of the heavier workload
- 2 main types - nucleus (protists e.g. Amoeba, Paramecium, and Euglena), and no nucleus (mainly bacteria)
- get oxygen directly from their surroundings
11
Q
What are the levels of organisation?
A
organism
organ system
organ
tissue
cells
Examples: brain cells, lung cells, blood cells, skin cells, and bone cells.
