Imagine you are examining a small mammal that lives under desert conditions and is water deprived. You would predict that levels of the antidiuretic hormone (ADH) in its blood would be
A. high, and that its urine would be more concentrated than its blood.
B. high, and that its urine would be less concentrated than its blood.
C. low, and that its urine would be more concentrated than its blood.
D. low, and that its urine would be less concentrated than its blood.
E. high, and that its urine would be no more concentrated than its blood.
A. high, and that its urine would be more concentrated than its blood.
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The frequency of sound waves reaching the ear determines:
A. intensity of sound B. loudness C. pitch D. tone
Of the following steps associated with translation, which does not involve hydrolysis of GTP?
A) aminoacylation of tRNA B) formation of the initiation complex C) binding of the aminoacyl tRNA to the codon at the A site D) translocation of the ribosome E) release of polypeptide
During the early part of a young human's life, when milk is a main source of nutrition, the E. coli in the young offspring's intestinal tract are exposed to high levels of which of the following?
a. glucose b. ribose c. cellulose d. lactose e. fructose
Heart muscle works hard and therefore consumes much ATP. Which organelles would you expect to be especially numerous in the heart muscle cells?
A) nuclei B) mitochondria C) Golgi complexes D) lysosomes