Food webs are typically arranged into trophic levels with
A) primary producers at the bottom, herbivores in the middle, and carnivores at the top.
B) herbivores at the bottom, carnivores in the middle, and primary producers at the top.
C) carnivores at the bottom, herbivores in the middle, and primary producers at the top.
D) primary producers at the bottom, carnivores in the middle, and herbivores at the top.
A
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Antibodies detected by reacting patient serum with rickettsial antigens, followed by incubation with an anti-immunoglobulm with a fluorescent tag, could be used to diagnose:
A. Rocky Mountain spotted fever. B. Mycoplasma pneumonia. C. stomach ulcers. D. rheumatic fever.
What is most likely to be an epiphyte?
A) a plant growing on the branches of another plant B) a plant that captures insects C) a plant with a very deep root system D) a plant that parasitizes another plant
A mutation in which part of a chromosome is transferred to a non-homologous chromosome is referred to as:
a. deletion. b. inversion. c. translocation. d. fission. e. fusion.
Blue light has ___ energy than red light and is ____ by a green leaf.
A. more, reflected B. less, reflected C. more, absorbed D. less, absorbed