The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H+) it secretes into the urine
You can confidently predict that this aspect of kidney function, like other mechanisms of homeostasis, will be controlled by ________. A) a negative feedback mechanism
B) nerve impulses from the brain
C) a hormone produced in the brain
D) a hormone produced in the kidney itself
A
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Which of the following molecules are able to cut DNA molecules at specific sequences?
a. assembly enzymes b. hydrolytic enzymes c. restriction enzymes d. ligase enzymes e. repair enzymes
In AIDS, the body’s reduced capacity for adaptive
immunity is due directly to the destruction of __________ cells. a. NK b. B c. helper T d. T e. dendritic
Treatment for Neisseria meningitidis consists of ________.
A. tetracycline B. vancomycin C. oral penicillin G D. rifampin E. intravenous penicillin G
Dr. Smith's parents have normal hearing. However, Dr. Smith has an inherited form of deafness. Deafness is a recessive trait that is associated with the abnormal allele d. The normal allele at this locus, associated with normal hearing, is D. Dr. Smith's
parents could have which of the following genotypes? A) DD and dd B) dd and dd C) Dd and Dd D) Dd and DD