Which term specifies a relationship between two organisms that provides benefits to both?
a. symbiotic
b. mutualistic
c. pathogenic
d. systematic
b. mutualistic
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A function of antibodies is to _____
A) inject toxins into living pathogens B) secrete cytokines that attract macrophages to infection sites C) release perforins to disrupt infected cells D) act as Toll-like receptors E) mark pathogenic cells for destruction
What are the most common routes for the administration of a vaccine?
a. Inhaled or orally b. Topically or injected c. Orally or injected d. Inhaled or injected e. Topically or orally
C14 is a radioactive isotope, and it turns into _____________ when it decays. Fill in the blank(s) with the appropriate word(s)
Which of the following microbes produces a protein that kills a variety of insect pests?
A. Pseudomonas B. Haemophilus influenzae C. Bacillus thuringiensis D. Thermus aquaticus E. Plasmodium falciparum