An EEG is
a. a graph showing brainwave patterns.
b. an oscilloscope pattern showing an action potential of a nerve.
c. an oscilloscope pattern showing a muscle undergoing contraction.
d. a graphic representation of the function of a heart.
e. a state of sleep when dreaming occurs.
A
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Which of the following is not a strategy that bacteria use to resist the action of antibiotics?
A. Altering cell membrane structure to prevent antibiotic influx. B. Cleavage of a key structural component of the antibiotic. C. Modification of the antibiotic by the acetylation or phosphorylation. D. All of the choices are correct.
All of the following situations are passive modes of penetration for the invasion of host tissues by opportunistic pathogens EXCEPT
A. a bacterium adhering to intravenous tubing, forming a biofilm. B. a hiker being bitten by a tick. C. a child falling and scraping her knee. D. a firefighter receiving third-degree burns on the skin.
During decomposition of amino acids, the amino groups undergo (ammonification/anammox/denitrification) and are converted to ammonia.
Fill in the blank(s) with the appropriate word(s).
Which two statements are part of the cell theory?
A. All infectious diseases are caused by specific organisms. B. All organisms are made up of cells. C. Energy cannot be created nor destroyed. D. All cells come from pre-existing cells.