In an allergic reaction, allergens bind ________, which release allergy mediators.
A) IgE antibodies on mast cell surfaces
B) IgG antibodies on B cell surfaces
C) allergy genes on chromosome 5
D) histamines on mast cell surfaces
A) IgE antibodies on mast cell surfaces
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Which bacteria gram positive or negative have the extra plasma membrane?
a. gram-positive b. gram-negative c. both a. and b. are correct d. none of the above
Imagine that a young girl suffers a horseback-riding injury, and one of her ribs punctures her diaphragm. How will this injury affect the girl's breathing? Select all correct choices
A. The injury will make it easier to increase negative air pressure in her chest cavity, making inhalation easier. B. The injury will make it more difficult to increase negative air pressure in her chest cavity, making inhalation more difficult. C. The injury will make it more difficult to decrease negative air pressure in her chest cavity, making inhalation more difficult. D. The injury will not affect her at all, as intercostal muscles are responsible for breathing
The enzyme ________ is associated with the cytoplasmic portion of the glucose transporter.
A) hexokinase B) glucose phosphorylase C) gluconase D) hexose phosphorylase E) none of the above
K. denitrificans, which is nonhemolytic and tends to pit the agar, also grows on selective media that support the growth of which gram-negative diplococci?
a. Capnocytophaga spp. b. C. hominis c. A. aphrophilus d. N. gonorrhoeae