Topic 3: Membranous Organelles Flashcards
1
Q
Name 5 of the membranous organelles.
A
- mitochondria
- ER
- Golgi Apparatus
- lysosomes
- nucleus
2
Q
What is the general structure of the mitochondria? (2)
A
- site of ATP synthesis
- has a double membrane
3
Q
What is the general function of the mitochondria?
A
- site of ATP synthesis
4
Q
What is the endoplasmic reticulum?
A
- membranous network throughout the cytoplasm
5
Q
What is the rough ER?
A
ribosomes attached - synthesis of secretory, lysosomal, and membrane proteins
6
Q
What is the composition of the smooth ER?
A
- lacks ribosomes
- continuous with RER
7
Q
What is the function of the smooth ER?
A
- synthesizes lipids and hormones
- detoxification, etc. has a more diverse set of roles
8
Q
What is the golgi apparatus/complex?
A
- stacks of membrane discs
9
Q
What is the function of the golgi apparatus?
A
- modifies (ex/ trims or adds CHO groups), sorts, packages, and delivers proteins/lipids to cell membrane, lysosomes, or for secretion
- aka cellular post office
10
Q
What are lysosomes?
A
- filled with digestive enzymes
11
Q
What is the function of lysosomes?
A
- digest bacteria, viruses, worn-out organelles (clean up function)
12
Q
The nucleus is known as the ____ membranous organelle and is the cell”s ___ centre.
A
- largest
- control
13
Q
How many nuclei does a cell have?
A
one or more
14
Q
Name the 3 parts of the nucleus
A
- Nuclear envelope
- nucleolus
- chromosomes/chromatids
15
Q
What is the structure of the nuclear envelope?
A
- double membrane with pores
- connected to ER
