2.1.1 cell structure Flashcards
1
Q
what is the structure and role of the nucleus/ nucleolus
A
- contains nuclear envelope with 2 membranes with fluid between.
- has nuclear pores which allows large molecules to pass
- nucleolus: makes rRNA which makes ribosomes
2
Q
structure and role of mitochondria
A
structure: double membrane separated by fluid filled space (matrix) and is highly folded to form cristae
role: site of respiration in the cell and releases energy to cell for metabolic reactions
3
Q
role of lysosomes
A
- responsible for breaking down old organelles
4
Q
structure of golgi apparatus
A
5
Q
role of golgi apparatus
A
- modifies proteins and packages them into vesicles
6
Q
structure of endoplasmic reticulum
A
7
Q
role of rough endoplasmic reticulum
A
- responsible for synthesis and transport of proteins
8
Q
role of smooth endoplasmic reticulum
A
- responsible for synthesis and storage for lipids/ carbohydrates
9
Q
structure of centriole
A
10
Q
role of centrioles
A
- aid in organising cell division
11
Q
role of cytoskeleton
A
microfilament: allows cell contraction during cytokinesis & aids cell movement
intermediate filament: provides mechanical strength
microtubules: acts as tracks for movement of organelles and vesicles
