What type of tissue is characterized by adherence to a basement membrane on one side and a free
surface on the opposite?
a. connective
b. muscle
c. nervous
d. epithelial
e. adipose
D
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Which of the following drugs, chemotherapeutic agents against HIV, inhibits reverse transcriptase?
A) ampligen B) azidothymidine C) alpha interferon D) soluble CD4
The number of ATP molecules generated per atom of oxygen that is reduced when electrons are passed from NADH or reduced FAD (FADH) to O2 is called the
A. P/O ratio. B. phosphorylation coefficient. C. utilization ratio. D. energy yield.
What explains the increased concentration of Ca++ in the ER?
A) Calcium ions are actively imported from the cytoplasm into the ER. B) Calcium concentration is kept low in the cytoplasm because of its high usage level. C) Calcium cannot enter the plasma membrane through ion channels. D) Calcium levels in the blood or other body fluids are extremely low. E) The Ca ions are recycled from other molecules in the ER.
Which of the following pairs is mismatched?
A) ionizing radiation — hydroxyl radicals B) ozone — takes electrons from substances C) plasma sterilization — free radicals D) supercritical fluids — CO2 E) ultraviolet radiation — desiccation