Chapter 3 - Cells Flashcards
0
Q
What type of cell has a nucleus and what type doesn’t?
A
- Prokaryotic cells have no nucleus.
* Eukaryotic cells have a nucleus and more internal structures
1
Q
What are the three parts of the cell theory?
A
- all organisms are made of cells
- all existing cells are produced by other living cells
- the cell is the most basic unit of life
2
Q
What three characteristics do ALL cells share?
A
- microscopic
- enclosed by a membrane(phospholipid bilayer)
- filled with cytoplasm
3
Q
What does the cytoskeleton of a cell do?
A
- support and shapes cell
- helps position and transport organelles
- provides strength
- assists in cell division
- aids in cell movement
4
Q
What does the nucleus store?
A
Genetic information
5
Q
Many processes occur in the endoplasmic reticulum. What are the two types of ER and what is the difference between them?
A
- rough; has ribosomes
* smooth; does not have ribosomes
6
Q
What do ribosomes do?
A
They link amino acids to form proteins
7
Q
What are vesicles?
A
Membrane-bound sacs that hold materials
