Which antimicrobial protein triggers inflammation?
A. complement
B. histamine
C. pyrogen
D. interferon
Ans: B. histamine
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Prokaryotic cells are smaller than eukaryotic cells. What is a plausible explanation?
A. Prokaryotic cell walls limit their cell growth. B. Prokaryotes lack the genetic material needed for protein synthesis. C. Eukaryotes have compartmentalization, which allows for specialization. D. Prokaryotes have more diverse energy sources. E. Eukaryotes are immobile allowing them to grow larger.
Cells of the outer surface of a sponge obtain
nutrients by a. absorbing food that diffuses from the central cavity. b. capturing food in their microvilli. c. absorbing food distributed by amoeboid cells. d. phagocytosing bacteria and other small food items. e. poisoning small fish that contact them.
The retina is incomplete at the place where the ____ ____ leaves the eye forming your "blind spot"
Fill in the blank(s) with the appropriate word(s).optic nerve
The seeds in a pod of one of Mendel's pea plants are:
A) produced only when a plant is cross-fertilized. B) genetically identical to each other but different from other peas in other pods. C) each the result of a separate fertilization event. D) genetically identical to each other and all other peas from that plant. E) produced only when a plant is self-fertilized.