Exam 5: Membranes

Three (3)eggs are boiled and all weigh 2g.The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes. McGraw-Hill Education -The solution in the container is hypertonic to which egg?

The process often referred to as "cellular eating" is

Osmosis can only occur if water travels through the

Osmosis is the diffusion of water across a membrane in response to the concentration of one or more of the ________.

A type of transport of a solute across a membrane,up its concentration gradient,using protein carriers driven by the expenditure of chemical energy is known as

If two solutions have unequal concentrations of a solute,the solution with the lower concentration is called

What describes the movement of substances down their concentration gradients?

Osmosis occurs as water can cross the lipid bilayer through specialized channels for water movement called ________.

While water continually orients phospholipids into a lipid bilayer,it does not fix the lipids permanently into position.Thus,the bilayer is considered to be ________.

The diagram shows the rate of diffusion into a cell using carrier proteins. McGraw-Hill Education -Carrier proteins are saturated at which point?

What initiates the sodium-potassium pump?

Receptor-mediated endocytosis brings in specific material by engulfing it in vesicles.What factors,either directly or indirectly,are related to this process? Choose all that apply.

Tetrodotoxin is a potent poison,produced by some newts,pufferfish,and blue-ringed octopus that affects sodium transport involved with the voltage gates in neurons.A friend swimming in the Caribbean is pricked by a pufferfish and gets very sick.The most likely action the poison takes is

Diapedesis is the movement of white blood cells through intact blood vessel walls into surrounding body tissue.It typically happens when an area of the body is injured or damaged,and an inflammation response is required.What role would you expect cell adhesion molecules to play in this process?

Three (3)eggs are boiled and all weigh 2g.The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes. McGraw-Hill Education -Which egg is isotonic to the solution?

Which of the following protein classes are not found as membrane proteins?