Shells of forams consist of organic matter reinforced by ____
a. silica
b. cellulose
c. calcium carbonate
d. copper sulfate
e. hydrogen sulfide
ANSWER: c
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The first evidence of a connection between genes and metabolism came from studies of alkaptonuria
conducted by ____.
a. Beadle and Tatum b. Griffith c. Watson and Crick d. Garrod e. Nirenberg and Leder
Which of the following is a lophotrochozoan protostome?
a. arthropods b. cnidarians c. mollusks d. chordates e. nematodes
Diploid cells have two copies of each chromosome
1.True 2.False
In mammals, essentially all of the glucose and amino acids from the filtrate get reabsorbed in one of the excretory tubule segments. In which segment does this occur?
a. in the proximal convoluted tubule b. in the descending segment of the loop of Henle c. in the ascending segment of the loop of Henle d. in the Bowman's capsule