The efferent arterioles transport blood directly into the:a
afferent arterioles.
b. Bowman's capsule.
c. glomerulus.
d. peritubular capillaries.
e. renal artery.
d
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In certain areas of the world where there's a high incidence of malaria, there's also a high incidence of sickle-cell anemia. Sickle-cell anemia results from a mutation in the gene that codes for hemoglobin
Malaria is an infectious disease carried by mosquitoes. Both malaria and sickle-cell anemia can be fatal. If an individual is homozygous for normal hemoglobin, they're more prone to malaria. If an individual is homozygous for sickle-cell hemoglobin, they'll develop sickle-cell anemia. However, if an individual is heterozygous and possesses one allele for normal hemoglobin and one allele for sickle-cell hemoglobin, they're less prone to malaria and won't develop sickle-cell disease. What description applies to this example? A) Being heterozygous can result in greater fitness for an individual. B) Inbreeding depression can result in reduced rates of survival. C) Genetic drift can occur in small populations. D) Homozygous individuals are often unhealthy.
All of the following can be used to culture animal viruses EXCEPT
a) laboratory animals b) cell culture. c) embryonated eggs. d) glucose broth.
How is the renal tubule excretion of ammonia involved in maintaining the acid-base balance?
A) An increase in blood pH accelerates tubule excretion of both hydrogen and ammonia. A decrease in blood pH produces the opposite effects, thus maintaining pH balance. B) A decrease in blood pH accelerates tubule excretion of both hydrogen and ammonia. An increase in blood pH produces the opposite effects, thus maintaining pH balance. C) Renal tubule excretion of ammonia causes the combining of hydrogen to form ammonium ions that decrease the blood bicarbonate buffer pair ratio. D) Ammonia excreted by renal tubules has no effect on acid-base balance.
Mitochondria can be isolated from cells and their production of ATP measured. You want to identify the mechanism of ATP production, so you isolate mitochondria, remove the outer membrane, and place them in a high pH solution. What will happen to the ATP
production if you start to lower the pH by adding hydrogen ions to the solution? What will be an ideal response?