B1.3 Eukaryotic and Prokaryotic Cells Flashcards
1
Q
What are examples of eukaryotic cells?
A
Plant and animal cells
2
Q
What are examples of prokaryotic cells?
A
Bacteria
3
Q
What are plasmids?
A
Small rings of DNA
4
Q
What is a flagellum?
A
Long protein strand that lashes about
5
Q
How big is a nanometer?
A
1 x 10^-9
6
Q
How big is a micrometer?
A
1 x 10^-6
7
Q
What are the differences between prokaryotic and eukaryotic cells?
A
Most eukaryotic cells are bigger than prokaryotic cells
Prokaryotic cells do not contain chloroplasts
8
Q
Explain why single-celled organisms, like algae, do not need complex structures for
gas exchange?
A
Cell has a large surface area to volume ratio
This means it has a short diffusion distance via the cell membrane and is sufficient enough for gas exchange
Maintains a concentration gradient
