The fist four-legged vertebrates were
A. amphibians.
B. reptiles.
C. tortoises.
D. lampreys.
E. lungfish.
Answer: A. amphibians.
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One of the waste products that accumulates during cellular functions is carbon dioxide. It is removed via the respiratory system. What is another waste product that accumulates during normal physiological functions in vertebrates?
I) ammonia II) uric acid III) urea A) only I and III B) only II and III C) only I and II D) I, II, and III
Which of the following is NOT true of human gut microbes?
A) The population size is low, but diversity is high. B) They produce and excrete amino acids. C) They help catabolize polysaccharides. D) They are involved in the "maturing" of the gastrointestinal tract.
Chitons, snails, clams and squid all belong to this phylum:
a. Mollusca. b. Gastropoda. c. Bivalvia. d. Platyhelminthes. e. Cephalopoda.
Spongiform encephalopathy diseases develop as a result of infection with (parasites/prions/rabies)
What will be an ideal response?