Week 3 - Organelles Flashcards
1
Q
ribosomes
A
- synthesize protein
- large subunit, small subunit, mrna binding site, trna binding site
- made of rrna and proteins
- make proteins using mrna template
2
Q
cis & trans golgi
A
cis is where activity starts
3
Q
lysosomes
A
organelles that contain digestive enzymes
4
Q
Nucleus functions
A
- houses genetic material, regulates gene expression, controls cellular behaviours (i.e. division), site of transcription (rna synthesis), ribosome assembly
5
Q
nucleus features
A
- double membrane-bound “nuclear envelope”
- chromatin, pores, nucleoplasm, nucleolus, nuclear lamina
- contains DNA and RNA
6
Q
Rough endoplasmic reticulum functions
A
- protein synthesis (folding and modification) for sorting
- membrane synthesis
7
Q
RER
A
- 1 membrane (continuous w the nuclear outer membrane)
- ribosomes on surface of membrane
- lumen
- membrane folded into cisternae, tubules
- proteins - synthesized
- enzymes for protein mod
- carbs attached to proteins
8
Q
Smooth endoplasmic reticulum functions
A
- synthesis of lipids (e.g. steroids), carbs
- storage of Ca2+
- detoxifies drugs, poisons
9
Q
SER features
A
- 1 membrane (continuous w rer membrane)
- regions: lumen & membrane folded into tubules
- has synthesized lipids, carbs and proteins (enzymes)
