Movement in and out

which one of these is not a component of cell membrane

• Glycolipid

• Glycoprotein

• Triglyceride

• Cholesterol

Choose the correct answer

• both phospholipids and triglycerides contain phosphate

• the difference between phospholipids and triglyceride is the presence of saturated fatty acids

• both phospholipids and triglycerides contain glycerol

• Phospholipids contain glycerol while triglycerides dont

What describes the molecules that have the highest permeability through the plasma membrane

• small

• water soluble

• lipid soluble

• charged

how can charged substances move through the plasma membrane

• Active transport

• Facilitated diffusion

• simple diffusion

• Osmosis

What is the best definition for osmosis

• its the movement of water molecules through partially permeable membrane from high concentration to low concentration

• its the movement of water molecules through partially permeable membrane from high water potential to low water potential

• its the movement of water molecules through partially permeable membrane from low concentration to high concentration

• its the movement of water molecules through partially permeable membrane against the water potential gradient

Letter E in the diagram represents

• Triglycerides

• Integral protein

• Transmembrane protein

• Cholesterol

Letter C is

• glycolipid

• glycoprotein

• phospholipids

• transmembrane protein

The membrane forms a bilayer because

• the heads are hydrophobic so they orientate themselves away from water

• the heads are hydrophilic so they orientate themselves away from water

• the tails are hydrophobic so they orientate themselves towards from water

• the heads are hydrophilic so they orientate themselves towards water

Our current model of the membrane is

• Davson Danielli Model - Fluid Mosaic

• Singer Nichelson model - Sandwich Model

• Davson Danielli Model - Sandwich model

• Singer Nichelson model - Fluid Mosaic

which one of these methods requires the use of protein carriers

• Diffusion - Actively

• Facilitated Diffusion - Actively

• Active transport - Actively

• Diffusion - Passively