In order for some phagocytes to destroy certain pathogens they have ingested (like tuberculosis), _____ must be deployed.
A. lysosomes
B. diapedesis
C. the respiratory burst
D. complement
Answer: C. the respiratory burst
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Polymers are a typical formation of ________ molecules.
A) inorganic B) organic C) either organic or inorganic
Visual and hearing receptors are irreplaceable, but taste and olfactory receptors are continuously renewed
Indicate whether the statement is true or false
When 2,3-bisphosphoglycerate (BPG) levels increase, hemoglobin
A. releases less CO2 to tissues. B. releases more CO2 to tissues. C. releases more O2 to tissues. D. releases less O2 to tissues. E. None of the choices are correct.
Water-soluble hormones differ from lipophilic hormones, in that ________.
A. water soluble hormones never enter the cell B. water soluble hormones require transport proteins to reach their target cells C. water-soluble hormone secretion is always under hypothalamic control D. lipophilic hormones utilize second messengers to impact protein synthesis within the cell