Membranes and transport methods

Which membrane structures form the glycocalyx?

• glycolipids and glycoproteins

• glycolipids and glycophosphates

• glycolipids and cholesterol

• glycolipids and phospholipids

Which structure in the cell surface membrane is responsible for maintaining the fluidity of the membrane?

• phospholipid

• cholesterol

• intrinsic protein

• glycoprotein

What molecules are moved across membranes by facilitated diffusion

• small, non polar molecules

• ions, large molecules, non polar molecules

• ions, large molecules, polar molecules

• large ionic compounds

Which factor might slow down the rate of diffusion into a cell?

• temperature increase

• larger concentration gradient

• increased diffusion distance

• decreased surface area of membrane

Name molecule F:

• Intrinsic protein

• Extrinsic protein

• Glycoprotein

• Channel protein

What type of solution are the A cells in?

• Hypertonic

• Hypotonic

• Isotonic

• Extratonic

Which description of what is happening to animal cell C is correct?

• What is moving into the cell by osmosis. The cell has undergone plasmolysis.

• Water is moving into the cell by osmosis. The cell has swelled then undergone lysis.

• Water is moving into the cell by osmosis. The cell has swelled and become turgid.

• Water is moving out of the cell by osmosis. The cell has become crenated.

What types of protein are used for active transport across the cell surface membrane?

• Extrinsic proteins

• Both channel and carrier proteins

• Only channel proteins

• Only carrier proteins

What component of the cell surface membrane represents the mosaic in the fluid mosaic model of cell membrane structure?

• Cholesterol

• Phospholipids

• Proteins

• Glycolipids

What property do phospholipids possess that enables them to form a phospholipid bilayer

• They are soluble in water

• They are hydrophobic

• They are hydrophilic

• They are amphipathic