When placed in a solution, HNO3 dissociates into H+ and NO3-. The compound HNO3 must be a(n) ________.
A. electron.
B. acid.
C. base.
D. nucleotide.
Answer: B
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The role of the glomerulus is to
A) Provide blood to the nephron. B) Accept blood from the Bowman's capsule. C) Concentrate the urine. D) Establish osmotic gradients in the kidney medulla.
Which of the following is a function of the T cells?
A) humoral immunity B) removal of abnormal blood cells C) cell-mediated immunity D) iron storage E) initiation of the immune response
Parrots, macaws, budgerigars, cockatiels, and parakeets are examples of __________________
Fill in the blank(s) with correct word
Which structure delivers venous blood from the tissues and organs of the abdominal and pelvic cavities, and from the lower limbs?
A) coronary veins B) pulmonary trunk C) superior vena cava D) fossa ovalis E) inferior vena cava