specific organelles Flashcards
1
Q
endoplasmic reticulum (ER)
A
network of intracellular membrane-bound tunnels
2
Q
enclosed spaces within the endoplasmic reticulum
A
cisternae
3
Q
two types of endoplasmic reticulum
A
smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER)
4
Q
smooth ER is due to
A
lack of ribosomes
5
Q
functions of SER
A
- synthesis, transport, and storage of lipids
- metabolism of carbs
- detoxification of drugs, alcohol, and poisons
6
Q
rough ER is due to
A
ribosomes
7
Q
functions of RER
A
- receives newly synthesized proteins from ribosomes
- proteins will be secreted, inserted into plasma membrane, or included in a lysosome
- RER modifies proteins and packages them into transport vesicles
8
Q
golgi apparatus
A
receive material from ER for modification, sorting, and packaging
9
Q
lysosomes
A
- generated by golgi apparatus
- contain enzymes used to digest and remove waste
- releases lysosomal enzymes that digest cells
10
Q
peroxisomes
A
- sacs formed by pinching off from RER
- smaller than lysosomes
11
Q
mitochondria
A
- organelles with double membranes
- contains cristae
12
Q
ribosomes
A
responsible for protein synthesis
13
Q
free ribosomes
A
float in cytosol
14
Q
fixed ribosomes
A
are attached to RER
15
Q
cytoskeleton
A
proteins organized in the cytosol as solid filaments or hollow tubes
