Which of the following is greater?
A) the concentration of solute in the filtrate at the beginning of the nephron loop
B) the concentration of solute in the filtrate at the bottom of the nephron loop
C) The concentrations at the top and bottom are identical.
Answer: B
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Glaucoma is usually caused by
A. clouding of the lens capsule. B. accumulation of vitreous humor. C. clouding of the lens. D. accumulation of aqueous humor.
If you were to sequence the genome of two individuals and found that their DNA is 99.9% similar, what inference could you make?
A. These individuals are likely identical twins. B. No inferences could be made because 99.9% of DNA is shared between all humans. C. These individuals must be from different species. D. These two individuals must be siblings.
Veins of the brain empty into
A) coronary sinuses. B) dural sinuses. C) the cerebral arterial circle. D) external jugular veins. E) vertebral veins.
All of the following statements are true of most lymph tissues except:
A. they house lymphocytes and macrophages. B. they are largely composed of reticular connective tissue. C. they are the site of lymphocyte proliferation. D. the B lymphocytes are able to secrete antigens into the blood.