True or false: While food chains show linear energy transfer between organisms, food webs depict more realistically what occurs in an ecosystem
A. true
B. false
A
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In a family pedigree of several generations, it
is found that freckles appear in every generation and affect both sexes equally. Freckles is most likely a _____ trait.
a. dominant b. recessive c. X-linked d. epistatic e. pleiotrophic
The genetic equilibrium of a population can be upset
by all EXCEPT which of the following? a. mutations b. migration c. random mating d. genetic drift e. natural selection
The tissues of the root and shoot system include
a. ground tissue. b. dermal tissue. c. vascular tissue. d. ground and dermal tissues. e. ground, dermal, and vascular tissues.
Streptococcus pyogenes binds to plasminogen and then secrets _______ that creates plasmin that degrades tissue.
A. streptokinase B. M protein C. exfoliative toxin A D. hyaluronidase E. coagulase