cell structure and composition Flashcards
intracellular organelles: identify the following on a micrograph of a cell, and summarise their functions – nucleus, nucleolus, nuclear envelope, mitochondrion, rough endoplasmic reticulum, smooth endoplasmic reticulum, ribosomes, Golgi apparatus, secretory granule, plasma membrane, cytoskeletal components
1
Q
organelles present in a eukaryotic cell
A
nucleus, mitochondria, rough endoplasmic reticulum, smooth endoplasmic reticulum, ribosomes, Golgi apparatus, secretory granules. membrane, cytoskeleton
2
Q
what other structures are present in the nucleus
A
nucleolus, nuclear envelope
3
Q
3 components of cytoskeleton
A
actin filament, microtubule, intermediate filament
4
Q
function of actin filament
A
flexibility and strength
5
Q
function of intermediate filament
A
fibrous scaffold
6
Q
function of microtubule
A
tubulin used for fluid transport
7
Q
5 stages of cancer
A
nuclei pack → increase in number of cells undergoing mitosis → cells stack up → secondary colonies form → tumour nutrient demand outstrips supply
