Plasma membrane

They were first proposed fluid mosaic model by in 1972 to explain the structure of the plasma membrane.

• S.L. Singer and Garth J. Nicolson

• S.J. Singer and Garth L. Nicolson

• Singer Garth L. Nicolson

• S.J. Nicolson and Garth L. Singer

The following are the components of plasma membrane. EXCEPT one?

• cholesterol

• proteins

• carbohydrates

• nucleotide

Phospholipids are amphipathic meaning that they have both hydrophilic and hydrophobic regions.

• true

• false

Carbohydrates are the second major component of plasma membranes.

• true

• false

These are found on the outside and inside surfaces of membranes, attached either to integral proteins or to phospholipids.

• peripheral membrane proteins

• integral membrane proteins

• carbohydrate

• phospholipids

It forms distinctive cellular markers, sort of like molecular ID badges, that allow cells to recognize each other.

• cholesterol

• carbohydrates

• phospholipids

• proteins

What is the movement of material along a concentration gradient from high concentration to low concentration?

• passive transport

• vesicle transport

• active transport

• bulk transport

Osmosis occurs when there is an imbalance of solutes outside of a cell versus inside the cell.

• true

• false

What will happen if the red blood cell place under hypotonic solution?

• the cells will shrivel or crenate

• the cell will take too much water and swell, with the risk of eventually bursting

• the concentration of the cell is equal inside and outside of cell

• the cell will crenate and sudden swell and burst

What is the protein transport that the molecules move in the same direction?

• cotransporter

• symporter

• antiporter

• integral proteins