Which immunoglobulin is able to pass the placenta to protect the fetus from pathogens?
a. IgG
b. IgA
c. IgD
d. IgM
e. IgE
a
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Which of the following do NOT bind to the promoter sequence during regulation?
A) activators B) inducers C) repressors D) activators, inducers, and repressors
Which statement about guard cells is false?
A. Fern guard cells shrink and swell in concert with adjacent epidermal cells. B. Angiosperm cells shrink and swell in concert with adjacent epidermal cells. C. Angiosperm guard cells exchange solutes with adjacent epidermal cells. D. The resting state of guard cells is closed.
Bacteriorhodopsin is a light-sensitive pigment
found in ____ archaeans and used to supply energy for ____ production. a. halophilic; ATP b. thermophilic; carbohydrate c. methanogenic; methane d. halophilic; carbohydrate e. thermophilic; ATP
Immunization for ________ may reduce the incidence of otitis media and sinusitis
A) Mycoplasma pneumoniae B) Mycobacterium tuberculosis C) Propionibacterium acnes D) Corynebacterium diphtheriae E) Streptococcus pneumoniae