Nitrogenases not only reduce N2 but also can act on acetylene (C2H2)
Indicate whether the statement is true or false.
Answer: TRUE
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Many male songbirds have very distinctive songs that are used to attract females. These songs are an example of a ________ isolating mechanism.
A. postzygotic, ecological B. prezygotic, behavioral C. prezygotic, temporal D. postzygotic, mechanical E. prezygotic, gamete fusion
Constructing which of the following types of food web would require an experimental approach?
A) connectedness web B) energy flow web C) functional web
Which of the following pairs is mismatched?
A) tetanus — releases potent neurotoxin B) botulism — stimulates transmission of nerve impulse C) poliomyelitis — multiplication of virus occurs in throat and small intestine D) rabies virus — destroys cells of the CNS E) leprosy — deformation of nose and hands can occur
Which bacteria causes infections seen in chart 2?
A) Streptococcus pyogenes B) Staphylococcus aureus C) Streptococcus pneumoniae A) Streptococcus pyogenes