Explain why inulin is used to measure glomerular filtration rate (GFR).
What will be an ideal response?
Answer: Inulin is a plant carbohydrate that is filtered at the glomerulus but is not reabsorbed or metabolized. Therefore, GFR = (urine concentration of inulin * volume of urine produced per unit time) / plasma concentration of inulin.
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Which of the following types of movement may NOT require use of a motor protein
A) Muscle contraction B) Flagellar movement C) Vesicle transport D) Amoeboid movement
Which type of leukocyte has a derivative known as the plasma cell?
a. neutrophil b. B lymphocyte c. T lymphocyte d. macrophage e. basophil
Cocaine acts as a sympathomimetic drug because it blocks the reuptake of ________.
A. glucose B. norepinephrine C. insulin D. acetylcholine
There are ________ pairs of spinal nerves.
A. 40 B. 31 C. 51 D. 12 E. 13