WorksheetsCell Membrane: Biology Test
Total questions: 21
Worksheet time: 13mins
The cell membrane ___ what goes in and out of the cell.
regulates
destroys
creates
Cell Membrane = Plasma Membrane
True
False
Which are characteristics of the cell membrane?
no rigidity
no toughness
no shape
rigidity
defined shape
The cell membrane lets everything in and out of the cell. It is not selectively permeable.
True
False
The cell membrane only lets certain things in and out of the cell. It is selectively permeable.
True
False
How many parts does the cell membrane have?
1
2
3
4
Which are parts of the cell membrane?
phospholipid bilayer
protein
cell marker (carbohydrates)
RNA
ribosomes
The phospholipid bilayer is made of two parts, one is hydrophilic and one is hydrophobic. Which two are correct?
Hydrophilic: likes water
Hydrophobic: likes water
Hydrophilic: hates water
Hydrophobic: hates water
The cell membrane is made of three parts, including protein. Which two are correct?
Integral protein: located throughout the bilayer
Peripheral protein: located throughout the bilayer
Integral protein: located on just the top or bottom
Peripheral protein: located on just the top or bottom
A cell marker (carbohydrate) is also known as a receptor or flag. A cell marker determines if other cells it encounters are alike or different from itself.
True
False
The cell membrane keeps the cell ___ or in homeostasis.
happy
sad
depressed
dead
fluid mosaic: proteins are always ___
in motion
in homeostasis
yummy
stationary
How do molecules move through the cell membrane? Choose two.
small molecules: without energy
big molecules: without energy
small molecules: needs energy
big molecules: needs energy
Passive Transport: movement of molecules without ___
energy
motion
water
the cell membrane
Passive Transport can occur in three ways with only small molecules.
Diffusion: high concentration to low concentration of gas
Osmosis: high concentration to low concentration of water
Facilitated Diffusion: molecules are diffused across cell membrane with the help of carrier molecules
Diffusion: high concentration to low concentration of water
Osmosis: high concentration to low concentration of gas
Facilitated Diffusion has three types. Which are correct?
Uniport: carries one molecule
Symport: two molecules bind to a protein
Antiport: molecules exchange in two different directions
Symport: molecules exchange in two different directions
Antiport: two molecules bind to a protein
Osmosis (movement of water) can cause an animal cell to be turgid and hypotonic, which means...
it burst
it shrank
Osmosis (movement of water) can cause a plant cell to go into plasmolysis and be hypertonic, which means...
(hint: cell wall separates from cell membrane)
it burst
it shrank
Active Transport: energy ___ process during which a transport protein pumps a molecule against the concentration gradient - or, a molecule is too big so it shoves itself into the cell
required
lacking
destroying
healing
Active transport can happen in three ways. Which are correct?
Protein pumps: against concentration gradient (sodium-potassium pump)
Endocytosis: transports big molecules INSIDE the cell
Exocytosis: transports big molecules INSIDE the cell
Endocytosis: transports big materials OUTSIDE the cell
Exocytosis: transports big materials OUTSIDE the cell
Endocytosis can happen in two ways. Which are correct?
Pinocytosis: a bunch of little molecules go through at once
Phagocytosis: a bunch of little molecules go through at once
Pinocytosis: one huge molecule goes through at once
Phagocytosis: one huge molecule goes through at once
