Cell Membrane & Osmosis

Question 1

What are the two types of cells?

Answer 1

Prokaryotic (bacteria) and eukaryotic

Question 2

What are the two types of transportation across the cell membrane and what characterizes them?

Answer 2

Passive and Active.
Passive: always from low to high concentration and is driven by the kinetic energy of molecules
Active: Needs energy (ATP), protein, and moves against concentration gradient (low to high)

Question 3

What are the two types of Passive transportation?

Answer 3

Diffusion & Facilitated diffusion.
Diffusion: only gases can pass(ie: O2, CO2)
Facilitated diffusion: needs a protein to work, only 1 direction, goes a certain speed – if want faster needs more protein

Question 4

Osmosis in animal cells, what’s survivable?

Answer 4

Isotonic solution is normal. Hypo/Hypertonic would kill the animal.

Question 5

Osmosis in plant cells, what’s survivable?

Answer 5

Hypotonic is normal and Isotonic is survivable but just wilting. Hypertonic would kill the plant.