Chapter 4 Flashcards
0
Q
Why are cells so small?
A
Smaller cells are more efficient and can interact with the environment better
1
Q
State the cell theory, and outline the three principles.
A
• All organisms are composed of cells
- All organisms have at lest one cell
- Anything smaller then a cell isn’t living
- Life wouldn’t be possible without cells
2
Q
Why don’t animals have a central vacuole?
A
Because they don’t need to store water like plants do
3
Q
Why do lipid bilayers form spontaneously?
A
The non-polar part of the protein hides from the surrounding water
4
Q
Where in the cell are ribosomes assembled? Where are these ribosomes located when they are functioning in the cell?
A
The nucleus
They are located on the rough ER
5
Q
Describe two functions of the cell’s nucleus.
A
Command and control center
Genetic library
