PhysioEx 1

Which of the following is NOT a passive process? facilitated diffusion filtration osmosis vesicular transport

When the solutes are evenly distributed throughout a solution, we say the solution has reached _______. permeability velocity diffusion equilibrium

Which of the following does NOT describe the plasma membrane? semipermeable impermeable differentially permeable selectively permeable

Which of the following requires a membrane-bound carrier for transport? simple diffusion facilitated diffusion osmosis filtration

Which of the following solutes would move the fastest? albumin glucose urea sodium chloride

For solutes that move by simple diffusion, which of the following does NOT affect the rate of simple diffusion across a membrane? the membrane pore size the potential energy of the solute the concentration of the solute the size of the solute

In this activity, the solutes were transported through the dialysis membrane by _______. facilitated diffusion active transport osmosis simple diffusion

Through which membrane(s) would sodium chloride diffuse? Through which membrane(s) would sodium chloride diffuse? 200 MWCO only 50 MWCO, 100 MWCO, and 200 MWCO 100 MWCO and 200 MWCO 20 MWCO, 50 MWCO, 100 MWCO, and 200 MWCO

Which of the following statements about carrier proteins is FALSE? They are found integrated into the plasma membrane. They can become saturated if the maximum transport rate is exceeded. They might have to change shape slightly to accommodate a solute. They assist in simple diffusion.

Which of the following statements about facilitated diffusion is FALSE? The movement of the solute is passive. The movement requires a carrier protein. The movement of the solute is with its concentration gradient. The movement of a given solute usually occurs in both directions (into and out of the cell). Submit

Which of the following is NOT a reason why a solute would require facilitated diffusion? The solute directly requires ATP for its transport. The solute is too large to pass on its own. The solute is lipid insoluble. The solute is hydrophi

Which of the following would increase the rate of facilitated diffusion decreasing the concentration of solutes increasing the steepness of the concentration gradient decreasing the number of carrier proteins increasing the amount of ATP available

Simple diffusion and facilitated diffusion both _______. require ATP move solutes against their concentration gradient move solutes with their concentration gradient utilize a membrane-embedded carrier protein

Which of the following would decrease the rate of facilitated diffusion? increasing the number of carrier proteins decreasing the number of carrier proteins decreasing the amount of ATP available increasing the amount of ATP available

What happens to facilitated diffusion when the protein carriers become saturated? The transport rate will increase ATP will be utilized for transport The maximum rate of transport will occur. The protein carriers fall apart.

What happened when sodium chloride was added as a solute in the left beaker? Sodium was cotransported with the glucose. The transport rate of glucose increased. There was no change in the transport rate of glucose. The transport rate of glucose decreased.

Which of the following statements about osmosis is FALSE? It is specific for the movement of water. Water moves toward the solution with the lowest concentration of solutes. It is passive. It is a type of diffusion.

A Hypertonic solution:_______. will induce cell shrinkage will induce no net movement of water will induce cell swelling will induce cell bursting

If a membrane is impermeable to solutes, which of the following is true? Water and solutes will move until equilibrium is reached. Water will move toward the more concentrated solutes. Water will move away from the concentrated solutes. Osmosis will not occu

Osmotic pressure is measured in units of _______. mm Hg ml/min mM/sec mM/min

Which of the following generated osmotic pressure? glucose sodium chloride sodium chloride, glucose and albumin generated osmotic pressure. albumin

Which of the following would result in NO change in osmotic pressure across a membrane? The concentration of solutes is the same on both sides of the membrane. The solutes can diffuse through the pores. Water is moving with its concentration gradient. The solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane.

With the experimental conditions set at 10 mM glucose and 9 mM albumin, and the 200 MWCO membrane in place, which of the following is true? Albumin and glucose diffuse through the membrane. The net movement of water is toward the glucose. The net movement of water is away from the albumin. The net movement of water is toward the albumin.

A cell is immersed in a beaker of solution. The cell membrane is permeable to water but impermeable to solutes. If the intracellular concentration is 10 mM and the solution is 20 mM, which of the following is true? The solution is hypotonic. The cell will shrink. There is no net change in the movement of water into the cell. The net movement of water is into the cell.

Which of the following is required for filtration? ATP osmotic pressure a hydrostatic pressure gradient Both a membrane and a hydrostatic pressure gradient are required. a membrane-embedded protein carrier

The presence or absence of a solute in the filtrate depends on _______. The molecular weight and size of the solute as well as the MWCO and pore size of the membrane. the pore size of the membrane the MWCO of the membrane the molecular weight of the solute the size of the solute

An example of filtration occurs in the kidney and: Ions and glucose filter from the capillary into the kidney tubule. Red blood cells filter from the capillary into the kidney tubule. This filtration across the capillary is an active process. Plasma proteins filter from the capillary into the kidney tubule. White blood cells filter from the kidney tubule into the capillary.

Which of the following resulted in an increase in the filtration rate? increasing the pore size Both increasing the pore size and increasing the pressure above the beaker are correct. increasing the concentration of the solutes increasing the pressure above the beaker Both increasing the pressure above the beaker and increasing the concentration of solutes are correct.

Which solute did NOT appear in the filtrate using the 200 MWCO membrane? Glucose, charcoal, sodium chloride and urea appeared in the filtrate. charcoal glucose sodium chloride urea

Which of the following was NOT observed during this activity? Increasing the rate of filtration increased the concentration of solutes in the filtrate. Some solutes were too large to pass through the membrane. A residue of solutes remained on the membrane after filtration. The 200 MWCO membrane was the largest pore size used.

Increasing the pressure above the beaker is analogous to _______. an increase in solutes found in the blood a decrease in blood volume an increase in heart rate an increase in blood pressure

Which of the following can be true of both active transport and facilitated diffusion? The cell membrane pinches off to transport materials. Solutes can move against their concentration gradient. Lipid-insoluble solutes are transported across the membrane by a carrier protein. A solute pump is required. Cellular energy is required for the transport.

Coupled transporters that move solutes in the same direction are called _______. symporters uniporters isoporters antiporters

Which of the following describes the concentration of ions when the cell is at rest? The concentration of potassium and sodium is equal inside and outside the cell. The concentration of potassium is higher outside the cell. The concentration of potassium is higher inside the cell. The concentration of sodium is higher inside the cell.

Which of the following is the driving force for the sodium-potassium pump? an electrical gradient a concentration gradient ATP hydrolysis a hydrostatic pressure gradient

The sodium-potassium pump can transport _______. potassium even if sodium is not available sodium even if potassium is not available and potassium even if sodium is not available only if sodium and potassium are available sodium even if potassium is not available

Which of the following increased the rate of sodium-potassium transport? adding glucose to the right beaker increasing the amount of ATP increasing the number of membrane pumps decreasing the amount of ATP

Which of the following describes the movement of ions by the sodium-potassium pump? Sodium is moved into the cell Potassium is moved out of the cell. Potassium is moved out of the cell and sodium is moved into the cell. Potassium is moved into the cell.

What is the type of transport supplied by the glucose carriers in the activity? endocytosis coupled transport exocytosis facilitated diffusion active transport