Biology Quiz 4: Cells, Osmosis, Membranes

A protein with carbohydrate attached

• Glycoprotein

• Couple transport

• Protein Channel

• Protein Pump

A transport protein that moves one type of molecule with its concentration gradient and the energy generated by that transport allows the movement of a second molecule against its concentration gradient

• Protein Channel

• Protein Pump

• Diffusion

• Couple Transport

Relies on the power of diffusion to move a specific ion across a membrane with its concentration gradient

• Glycoprotein

• Protein Channel

• Phagocytosis

• Active Transport

The movement of a large solid particle into a cell from the environment

• Phagocytosis

• Protein Pump

• Diffusion

• Glycoprotein

Use cellular energy to move an ion across a membrane against It’s concentration gradient

• Glycoprotein

• Active Transport

• Protein Pump

• Nucleic Acid

The passive movement of small non-polar molecules(e.g. O₂ and CO₂) differently across a membrane(I.e. no protein channels are necessary)

• Diffusion

• Osmosis

• Active transport

• Passive transport

A vesicle containing a 2% solution of sodium chloride (NaCl) is placed into several different solutions. State whether the solution is considered hypotonic, hypertonic, or isotonic compared to the vesicle. Predict what will happen to the vesicle.

Answer explanation

How are phospholipid bilayers and plasma membranes similar?

• Both are made of monomers

• Both are made of phospholipids

• Both are made of glycogen

• Both are made of cations

How do phospholipid bilayers and plasma membranes differ?

• Plasma is not made of phospholipids

• A plasma membrane contains protein that cells then use to transport molecules across the membrane

• There are no differences

• A phospholipid bilayer contains protein that cells then use to transport molecules across the membrane

What types of molecules can easily pass through a phospholipid bilayer?

• Large polar molecules(glucose/sucrose)

• Small polar molecules(H₂O )

• Small non-polar molecules(O₂ and CO₂)

• Large non-polar molecules

  (Fats)