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
B
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Match the following items with the correct phrases.
_______1. Organisms that live on dead and decaying organic matter are said to be __________. _______2. The type of relationship that termites have with the cellulose-eating protozoa that live in their intestinal tract. _______3. A symbiotic relationship that is beneficial to both parties (symbionts) is said to be a __________ relationship. _______4. A lichen is an example of a __________ relationship. _______5. A symbiotic relationship that is beneficial to one party (symbiont), but of no consequence to the other is said to be a __________ relationship. _______6. The type of relationship that humans have with the Escherichia coli organisms that live in their colon. _______7. A symbiotic relationship that is beneficial to one party (symbiont), and detrimental to the other is said to be a __________ relationship. a. commensalistic b. mutualistic c. parasitic d. saprophytic e. synergistic
If the gene for yellow body color (y) is an X-linked
recessive and its dominant counterpart (y+) produces wild body colors, give the phenotypes expected and their frequencies for the following four crosses: (a) yellow female x wild male (b) wild carrier female x wild male (c) wild carrier female x yellow male (d) homozygous wild female x yellow male What will be an ideal response?
Organ formation is indicated by
a. A. b. B. c. C. d. D. e. E.
Which of the following causes infectious sores on the mucous membranes of the mouth that occur during times of stress?
A) Herpes virus B) Escherichia C) Prions D) Listeria E) Bacillus anthracis