The shape of a virus is determined by
A. its DNA.
B. its RNA.
C. its envelope.
D. its host.
E. its coat protein organization.
E. its coat protein organization.
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Which is the MOST toxic form of mercury?
A) CH3Hg+ B) Hg0 C) Hg2+ D) Hg4+
The key hormone of childbirth is ____ , which is released from the posterior pituitary gland. It stimulates uterine contractions, which, in turn, stimulate more of it to be released
Fill in the blank with the appropriate word.
Nondisjunction may cause
a)trisomy 21. b)Turner syndrome. c)Jacobs syndrome. d)All answers are correct. e)Klinefelter syndrome.
Garlic mustard is an invasive plant species in North American temperate forests. Garlic mustard secretes an allelochemical that interferes with relationships between native tree roots and their mycorrhizal fungi. This would be an example of
A. exploitative competition. B. interference competition.