Physician Edward Jenner promoted the use of cowpox, a harmless pathogen related to the dangerous smallpox virus, as a vaccination to provide patients immunity from future smallpox epidemics. This is an example of
A. developing high levels of complement.
B. passive immunity.
C. developing high levels of interferon although Jenner did not realize these diseases were viral.
D. active immunity.
E. an inflammatory response that decreased the IgE production and increased T cells.
Answer: D
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Which one of the following is a type of species interaction with impacts that depend on prey density and effectiveness of defenses to determine the short-term impact on the prey population?
A) competition B) consumption C) mutualism D) commensalism
Proteins that bind to acetylated lysine residues in the histone tail contain:
A. bromodomains. B. DNA-binding domains. C. chromodomains. D. kinase domains. E. histone-fold motifs.
A salt ________ refers to a herbaceous plant community thriving in the intertidal zone, typically along the fringe of estuaries and islands along the coast at temperate latitudes
Fill in the blank(s) with correct word
One goal of pedigree analysis is to determine ____
a. what diseases a family will display b. if two people are related c. gene loci d. whether a gene has a dominant or recessive pattern of inheritance e. what treatment a person should undergo