A(n) ____ is produced by introducing a gene for a viral surface protein into a nonpathogenic vector
a. new pathogen
b. new life form
c. inactivated pathogen
d. nonpathogenic vector
e. recombinant vaccine
e
Biology & Microbiology
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Unlike other decapods, hermit crabs are covered by a very thin and light exoskeleton that does not confer much protection against predators. How is this a selective advantage for the hermit crabs?
What will be an ideal response?
Biology & Microbiology
The main form in which sugars are transported in the phloem sap is
a. glucose. b. lactose. c. starch. d. sucrose. e. fructose.
Biology & Microbiology
Describe the relationship of insulin and glucagon
What will be an ideal response?
Biology & Microbiology
_______ is a disease characterized by high transmissibility and low virulence.
A. bubonic plague B. AIDS C. chicken pox D. two of the above
Biology & Microbiology