This organism would belong to which group of animals?
1.sponges
2.jellyfishes
3.echinoderms
4.chordates
4
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Actual gas exchange occurs through the walls of which type of vessel?
a. arteries b. arterioles c. capillaries d. veins e. venules
Which term describes an additional layer of skin that forms a sheath like covering over the glans of a penis?
A. urethra B. fourchette C. scrotum D. foreskin
Which of the following pairs of industrial microbial products and their uses is MISMATCHED?
A) streptokinase; dissolving blood clots B) indigo; blue jeans C) citric acid; antioxidant in food D) gluconic acid; release of cellulose from flax to make linen E) phenylalanine; the sweetener aspartame
A test used to detect anti-Rickettsia antibodies in a patient's serum is the
A) direct fluorescent-antibody test. B) indirect fluorescent-antibody test.