Biology CB4 Quiz Membrane Proteins

What is the best term to describe a protein molecule that is attached to, or associated with, the membrane of a cell or an organelle?

• membrane protein

• cholesterol

• Fluid Mosaic

• semipermeable protein

Molecules of _______________ help the cell membrane keep its shape.

• proteins

• cholesterol

• phospholipids

• none of these

Which of these are true of integral membrane proteins? (check all that apply)

• They permanently embedded within the cell membrane

• Functions include channeling or transporting molecules and acting as cell receptors.

• They can be easily removed, which allows them to be involved in cell signaling.

• Most integral membrane proteins are hydrophilic.

Some integral membrane proteins are responsible for cell adhesion (sticking of a cell to another cell or surface).

• true

• false

Proteins that are only temporarily associated with the membrane are known as _____________________________.

• Integral membrane proteins

• Tertiary membrane proteins

• Peripheral membrane proteins

• Exo-membrane proteins

These two men proposed the now widely accepted Fluid Mosaic Model of the structure of cell membranes.

• H.R Geiger and J.J Walker

• E.F Hutton and J.P Mccarthy

• S.J. Singer and G.L. Nicolson

• J.R Hewing and C.L Lewis

The Fluid Mosaic Model proposes that integral membrane proteins are embedded in the ________________________.

• phospholipid bilayer

• cholesterol of cells

• peripheral membrane proteins

• ion channels of cells

The Fluid Mosaic Model proposes that the membrane behaves like a ___________ rather than a _______________.

• gas, solid

• fluid, solid

• solid, fluid

• gas, fluid

These structures are found on lung cells. They help keep your lungs clean. What are they?

• flagella

• cilia

• membrane proteins

• phospholipids

Tags

NGSS.MS-LS1-2

What is the name for the tail like structures on this bacteria?

• flagellum

• cilia

• membrane proteins

• phospholipids.