Which of the following is NOT a means by which substances such as oxygen, carbon dioxide, and nutrients exchange across a semipermeable membrane?
a. Diffusion
b. Osmosis
c. Facilitated diffusion
d. Active transport
b
Rationale: a. Diffusion is the movement of a solute or gas across a semipermeable membrane from an area of higher concentration to an area of lower concentration
b. Osmosis involves the movement of water, rather than substances.
c. facilitated diffusion is the movement of a solute across a semipermeable membrane with assistance of a "helper" such as a protein
d. active transport is movement of a particle across a semipermeable membrane utilizing an energy source such as adenosine triphosphate
You might also like to view...
A "healthy lifestyle" is different for each firefighter but generally includes regular exercise, a proper diet, and getting the right amount of sleep.
Answer the following statement true (T) or false (F)
Obesity is NOT a concern for the older adult population because most older adults are underweight
A) The statement is not correct, but the reason is correct. B) The statement is correct, but the reason is not. C) Both the statement and reason are correct but not related. D) Neither the statement nor the reason is correct. E) Both the statement and reason are correct and related.
Everyone who is exposed to a person with tuberculosis will get the disease
Indicate whether the statement is true or false
You are responding to a patient who has a weepy rash that itches intensely. She states that a couple of days ago she cleaned out a wooded area behind her home. How should you manage this apparent allergic reaction?
A) Provide oxygen via NRB and 100 mg of Benadryl IM. B) Benadryl IV and 0.3 mg of 1:1000 epinephrine. C) Benadryl and 0.5 mg of 1:10,000 epinephrine. D) None of the above are appropriate treatments.