i need help with these i answered some but i am not sure if it is correct.

1) What is FALSE about the extracellular fluid (ECF)?

Select one:

a. ECF is the fluid outside of the cell.

b. ECF is the body’s internal environment.

c. ECF consists of interstitial fluid and plasma.

d. Volume of ECF is greater than the intracellular fluid.

e. The osmolarity of plasma is 0.3 osmole/Liter.

f. None of the above

2) A drop of blood is added to a 1mL solution containing both 0.1M Glucose and 0.1M NaCl. What is the expected osmolarity of the solution compared to the intracellular fluid of the RBC BEFORE and AFTER the blood is added, respectively, when the membrane is impermeable to both solutes but permeable to water?

Select one:

a. hyperosmotic, hypoosmotic

b. isoosmotic, hypoosmotic

c. hypoosmotic, hyperosmotic

d. isoosmotic, hyperosmotic

e. hyperosmotic, hyperosmotic

f. isoosmotic, isoosmotic

g. hypoosmotic, hypoosmotic

h. none of the above

3) You accidentally poured a cup of water into a loaf of bread that your roommate had baked. The bread expanded and had risen twice from its original size. When you picked up the bread, it broke into pieces. What is the tonicity of the water to the baked bread?

Select one:

a. Isotonic solution

b. Hypotonic solution

c. Hypertonic solution

4)Which of the following is NOT a solution?

Select one:

a. Warm milk

b. Cold coffee

c. Orange soda

d. Ink

e. Powdered sugar

5) Which of the following statements does NOT describe the characteristic of simple diffusion?

Select one:

a. Passive transport across the membrane (no ATP).

b. Molecules move against its concentration gradient or it travels from an area of its lower to higher concentration.

c. Diffusion of the molecule will continue until the concentration of the molecule is at equilibrium.

d. All hydrophobic molecules do not use assisted means to cross the membrane.

e. Small, hydrophilic, ionized, and polar molecules will require channel proteins instead of carrier proteins to assist them across the membrane.

6) What is FALSE about NaCl? Select one:

a. NaCl is a table salt.

b. NaCl dissociates into Na+ and Cl-.

c. NaCl is an ionic molecule.

7) Identify the osmolarity and tonicity of the extracellular fluid, respectively based on the information given below.

When the extracellular fluid is ______ after a red blood cell is added, water will diffuse outside of the cell causing the cell to crenate. The extracellular fluid will appear cloudy. The tonicity of the extracellular fluid is ______, respectively. Select one:

a. Hyperosmotic, Hypertonic

b. Isoosmotic, Isotonic

c. Hypoosmotic, Hypotonic

d. None of the above

d. 1 mole of NaCl is equal to 2 osmole of NaCl.

e. 0.15M NaCl is equal to 0.15 mole/L NaCl.

f. 0.15M NaCl is equal to 3.0 Osm NaCl.

8) Solution A (1.0 M Glucose) and solution B (1.0 M NaCl) are separated by a dialysis membrane. If the membrane is spontaneously permeable to Glucose, NaCl, and Water, what is the INITIAL reaction of Glucose, NaCl, and Water? Select one:

a. No diffusion of Glucose, NaCl, and Water will take place because both solutions are at equilibrium.

b. Glucose will diffuse from A to B while NaCl and water will diffuse from B to A.

c. Glucose will diffuse from A to B while NaCl diffuses from B to A; no diffusion of Water.

d. Glucose and Water will diffuse from A to B while NaCl will diffuse from B to A.

9)Which of the following describes the characteristic of an isotonic solution? Select one:

a. The extracellular fluid is hypoosmotic to the red blood cell.

b. Water will diffuse out of the red blood cell.

c. Red blood cell will swell.

d. Appearance of extracellular fluid will be semi-cloudy.

e. None of the above is TRUE

10) Which of the statements is TRUE about the permeability of the membrane? Select one:

a. All hydrophobic molecules can permeate across the membrane with and without assisted means.

b. Water molecules only crosses the membrane using aquaporin channels.

c. Ionic particles, like Na+, K+, glucose, and Cl-, would cross the membrane by channel proteins.

d. Urea is a hydrophilic, polar molecule that does not use any assisted means to cross the membrane.

e. All of the above

11) Which is the CORRECT way to calculate the osmolarity of 0.15M NaCl? Select one:

a.

0.15 mole NaCl x 2 osmole NaCl = 0.3 osmole NaCl

Liter 1 mole NaCl Liter

b.

1.5 mole NaCl x 2 osmole NaCl = 3 osmole NaCl

Liter 1 mole NaCl Liter

c.

0.15 mole NaCl x 1 osmole NaCl = 0.15 osmole NaCl

Liter 1 mole NaCl Liter

d.

0.3 mole NaCl x 2 osmole NaCl = 0.6 osmole NaCl

Liter 1 mole NaCl Liter

12) If the membrane is permeable Urea, what is the tonicity of 0.3M Urea relative to the red blood cell. However, if the membrane is impermeable to Urea, what is the tonicity of 0.3M Urea relative to the red blood cell, respectively? Select one:

a. Isotonic, isotonic

b. Isotonic, hypotonic

c. Hypotonic, isotonic

d. Hypotonic, hypotonic

e. Hypotonic, hypertonic

13) Solution A (1.0 Osm Glucose) and solution B (1.0 Osm NaCl) are separated by a dialysis membrane. If the membrane is spontaneously permeable to Glucose, NaCl, and Water, what is the INITIAL reaction of Glucose, NaCl, and Water?

14) Select the CORRECT statement about osmosis.

Select one:

a. Water diffuses from a hypoosmotic to hyperosmotic solution.

b. Water diffuses from a hyperosmotic to hypoosmotic solution.

c. Water diffuses from lower concentration of water to higher concentration of water.

d. Water diffuses from higher concentration of solute to lower concentration of solute.

e. Osmosis will always require aquaporin channels to cross the membrane.

15) 0.5M NaCl is isosmotic to 1M Glucose while 0.5M NaCl is hyperosmotic to 0.5M Glucose. Select one:

a. True

b. False

16) Which of the statements is FALSE about Fick's Law of Diffusion? Select one:

a. Increase of the molecular weight of the substance will decrease the rate of diffusion.

b. Increase of temperature will increase the rate of diffusion.

c. Increase of the surface area of the diffusion pathway will increase the rate of diffusion.

d. Increase of the concentration gradient of a substance will increase the rate of diffusion.

e. Increase of the size and shape of a substance will increase the rate of diffusion.

f. Increase in the thickness of the membrane will decrease the rate of diffusion.

g. Increase in lipid solubility of the molecule will increase the rate of diffusion.

17) What is TRUE about osmolarity? Select one:

a. Osmole is equal to the total solute particle.

b. Osm and osm are two correct abbreviations for osmolarity.

c. Osmolarity is expressed as mole per Liter.

d. Osmole is the abbreviation for osmolarity.

e. 1M Glucose = 1 Osm Glucose and 1M NaCl = 1 Osm NaCl.

18) After the blood is added, what is the expected osmolarity and tonicity of the solution containing both 0.1M NaCl and 0.1M Urea, respectively, when the membrane is impermeable to NaCl but permeable to urea and water?

Select one:

a. isoosmotic, hypotonic

b. isoosmotic, isotonic

c. hypoosmotic, hypotonic

d. hyperosmotic, hypertonic

e. hyperosmotic, hypotonic