Which of the following statements is (are)
INCORRECT about ricin?
a. Ricin is a naturally occurring toxic protein.
b. The use of ricin as a weapon is banned by
the Geneva Convention.
c. Ricin does not have an antidote.
d. Ricin is obtained from the castor-oil plant.
e. Ricin stops protein synthesis by blocking
the activity of DNA
E
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Prostaglandins are
a. protein molecules that act either by paracrine or autocrine mechanisms. b. fatty acid derivatives that act either by paracrine or autocrine mechanisms. c. neurotransmitters that act by paracrine mechanisms. d. amine molecules that act by neuroendocrine mechanisms. e. steroid molecules that are lipid soluble.
The tissue type that functions in providing support, transport, and insulation is
A. epithelial. B. connective. C. nervous. D. muscle. E. All of the answer choices are correct.
Most conifers are ____
a. nonvascular b. dikaryotic c. deciduous d. seedless e. evergreen
The patient has a sore throat. What is the etiology of the symptoms?
A) Corynebacterium B) Rhinovirus C) Bordetella D) Streptococcus E) The answer cannot be determined based on the information provided.