Cell Membrane Question Preview (ID: 43049)
Cell Membrane.
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Phospholipids are an example of which macromolecule?
a) lipids
b) proteins
c) nucleic acids
d) carbohydrates
______________________ is responsible for helping the cell membrane to act like a fluid
a) proteins
b) cholesterol
c) hydrophobic heads
d) cell membrane
The cell membrane helps to maintain ____________ by regulating what enters and leaves the cell
a) structure
b) fluidity
c) homeostasis
d) protection
What are some terms that describe the phospholipids head?
a) head and hydrophobic
b) polar and tail
c) non polar and hydrophobic
d) polar and hydrophilic
Which term does not describe the tails of a phospholipid?
a) hydrophilic
b) hydrophobic
c) polar
d) protein
What do proteins do for the cell membrane?
a) Transport large molecules that cannot go through the cell membrane.
b) Provide structure
c) Communicate to other cells, used as identification, transport substances
d) Provides protection for the cell
Which is a true statement about the phospholipid bilayer?
a) Hydrophilic tails face each other
b) Hydrophilic heads face the inside and outside of the cell
c) Hydrophobic heads only face the outside of the cell
d) Hydrophobic tails face the inside and outside of the cell
Which is not another name for the structure that regulates what enters and leaves the cell?
a) fluid mosaic model
b) cell membrane
c) plasma membrane
d) phospholipids
Hydrophobic means
a) water fearing
b) water loving
c) non polar
d) tail
What would happen if cholesterol in the cell membrane stopped working properly?
a) The cell membrane will continue to allow materials into and out of the cell.
b) The cell membrane will be more fluid like and break apart.
c) The cell membrane will become solid and not allow substances through.
d) The cell membrane will only allow substances to enter the cell. Substances will not be able to leave.
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