No student devices needed. Know more
9 questions
Define cell (plasma) membrane
a solid, rigid boundary that surrounds a cell
the outer surface of a membrane that doesn't allow any substances to move into a cell
flexible boundary of a cell that separates a cell from its surroundings
a protective layer around the cell that provides strength
Which types of molecule are the main component of the cell (plasma) membrane?
carbohydrate and proteins
lipids and proteins
lipids and carbohydrates
DNA and proteins
This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHOBIC?
the phosphate "head"
the lipid "tails"
This image is an example of a phospholipid. Which part of a phospholipid would face the watery environment, either inside or outside a cell?
the phosphate "head"
the lipid "tails"
Which of the following is not a main role of the cell membrane?
providing strength for the cell
cell recognition
allowing cells to communicate with each other
controlling the movement of substance sin and out of a cell
Where can PROTEINS be found when part of a plasma membrane?
Embedded on the outside of the membrane
Embedded on the inside of the membrane
Embedded the whole way through the membrane
All the above
What is the "big idea" of the fluid mosaic model of cell (plasma) membranes?
the plasma membrane creates a specialized FLUID that looks like a MOSAIC.
the plasma membrane is a MOSAIC of different fluids.
the fluid mosaic model is NOT related to the plasma membrane.
a plasma membrane is a MOSAIC of components that move FREELY and FLUIDLY.
What does "hydrophilic" mean?
water loving, associates with water
water fearing, does not associate with water
water loving and fearing
attracted to fats and oils
The width of a cell (plasma) membrane is most appropriately measured in what sort of units?
nanometres
millimetres
centimetres
metres
Explore all questions with a free account