cell structure and function Flashcards
1
Q
levels of organisation
A
-orgaism level
-organ system level
-organ level
-tissue level
-cell level
-chemical level
2
Q
what is the organism level
A
organ system make up an organism
3
Q
organism system level
A
organs such as liver, make the organ system
4
Q
organ level
A
different tissues combine to form organs, such as the stomach
5
Q
tissue level
A
similar cells and surrounding material such as the stomach
6
Q
cell level
A
molecules form organelles, such as mitocondria or the nucleus
7
Q
chemical level
A
atoms (combine to form molecules)
8
Q
nucleaus functions
A
- control the chemical reactions within the cytoplasm
- to store info needed for cellurlar division
9
Q
endoplasmic reticulum
A
- site of translation, folding + transporting protein as well as protein that may be secreted from the cell
- endoplasmic reticulum consists of an extensive membrane network of tubes and cisternae ( sac-like structure ) whilst other parts of the ER membrane are contiunous
- part of the ER covered in ribosomes
10
Q
ribosomes
A
- small ball-like structures in cells made by proteins and RNA molcules = how protiens are made.
11
Q
golgi apparatus
A
- the central delivery system for the cell
- processes proteins
12
Q
mitocondria
A
- powerhouse of the cell
- the primary funtion is to convert organic materials into energy in the form ATP
13
Q
lysosmes
A
- it contains enzymes that digest macromolecules and are build in the golgi apparat built
- the most important enzyme (lipase, carbs, protease, nuclease)
14
Q
cytoplasm
A
- semi-fluid contained inside plasma membrane
- composed of ions and soluble macromolecules like enzyme, carbs, salts and proteins
15
Q
cytoskeleton
A
- cellular scaffolding
