A DNA vaccine involves placing genes into a plasmid and introducing the plasmid into human cells. Human cells then transcribe and translate the genes to produce antigen which immunize the recipient. What is the source of the genes being introduced?
A) a member of the patient's microbiome
B) a laboratory animal (such as a mouse)
C) a harmless virus
D) human B or T cells
E) a pathogen
Answer: E
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If a plant is bending towards the light, one would expect which enzymes to have increased in activity?
A. auxins B. gibberellins C. wall-loosening enzymes D. ethylene E. None of these is correct
Multiple functional groups are able to attach to macromolecules. What is the most useful characteristic that enables the attachment of multiple functional groups?
A. One hydrogen ionic bond. B. Four carbon covalent bonds. C. Two oxygen covalent bonds. D. Three nitrogen ionic bonds.
The tough, pliable body of a lichen is called a(n) ____
a. soredium b. arbuscule c. thallus d. sporangium e. haustorium
Four of the five responses listed below are
characteristic of inborn behaviors. Select the exception. a. modified by the environment b. stereotyped c. performed the first time stimulus is presented d. innate e. automatic