Which type of organisms were likely the first land animals?
a. birds
b. reptiles
c. mammals
d. amphibians
e. arthropods
e
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Mycobacterial infections in AIDS patients are mostly likely to be caused by ________.
A. Mycobacterium avium complex B. Mycobacterium africanum C. Mycobacterium bovis D. Mycobacterium tuberculosis
Startle coloration is used to attract mates
Indicate whether the statement is true or false
Which of the following is caused by an opportunistic pathogen?
A) trichomoniasis B) genital herpes C) candidiasis D) gonorrhea E) chancroid
One mechanism that some animals use to limit heat loss in cold environments is
A. vasoconstriction of your veins. B. increasing the volume of blood that leaves the ventricles with each beat of the heart. C. vasodilation of arteries in your arms and legs. D. vasoconstriction of arteries leading to your brain. E. vasoconstriction of the precapillary sphincters in the skin.