Cell Membranes 2

Question 1

What are Glycoproteins and glycolipids? where are they found?

what’s their main function?

Answer 1

Glycoprotein and glycolipids are a protein or lipid attached with a carbohydrate

Found attached to the outside of the cell membrane

Their main function is cell - cell recognition and interactions

Question 2

What body fluid compartment has the most water in it?

ECF or ICF?

Answer 2

ICF has the most water (~2/3 of body)

Question 3

What is osmosis?

Answer 3

Water moving from an area of low solute concentration to an area of high solute concentration

Question 4

Which of the following is found highest in ECF instead of ICF?

Na+
K+
Cl-
Ca2+
Anions
Proteins
HCO3-

Answer 4

the following are found higher in the ECF

Na+
Cl-
Ca2+
HCO3

Question 5

what is the difference between tonicity and osmolarity?

Answer 5

Osmolarity describes two solution’s particles / Vol with numbers

Tonicity describes the relationship between a cell and it’s surrounding solution

Question 6

Osmolarity test

Solution A = 1
Solution B = 2
Solution C = 1

What is A to B and C?
What is B to A and C?

Hypoosmotic, Hyperosmotic or isosmotic?

Answer 6

A is Hypoosmotic to B and Isosmotic to C
B is Hyperosmotic to A and C

Question 7

Tonicity test

Cell has 5 inside

What would happen to the cell when placed in the following solutions with membrane penetrating solutes?

Solution A = 10
Solution B = 5
Solution C = 2

Isotonic, Hypertonic or hypotonic

Answer 7

Solution A = Hypertonic (Cell shrinks)
Solution B = Isotonic (no change)
Solution C = Hypotonic (Cell Enlarges / Bursts