Which of the following represents the first line of defense against unwanted pathogens?
a. phagocytes
b. intact skin
c. T cell-mediated immunity
d. antibody-mediated immunity
Answer: b. intact skin
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Within the endoplasmic reticulum, ________ recognizes misfolded or unassembled proteins and transports them back to the cytosol.
Fill in the blank(s) with the appropriate word(s).
Obligate anaerobes may be cultured in the laboratory
A. in a reducing medium. B. in a standard incubator. C. in standard Petri plates. D. on blood agar plates. E. in standard complex media.
Potassium deficiency
What will be an ideal response?
In the process of noncyclic photophosphorylation, ________.
A. electrons from water flow through electron transport chains resulting in synthesis of ATP and NADPH B. water is split to form oxygen gas C. photosystems I and II are both required D. All of the choices are correct.