The chemical found in tears and saliva that hydrolyzes the peptidoglycan in certain bacterial cell walls is ________.
A. hydrochloric acid
B. histamine
C. bile
D. lysozyme
E. lactic acid
Answer: D
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A staphylococcal isolate that gives a negative result using the Cefinase disk and tests resistant to penicillin by disk diffusion means that:
a. the isolate may contain the mecA gene. b. the bacteria produce the lactamase en-zyme. c. the isolate is also resistant to ampicillin, carbenicillin, ticarcillin, and imipenem. d. the isolate is also resistant to oxacillin, cefoxitin, and ticarcillin-clavulanate.
Which would create a more acute dietary shortage for human beings - the loss of monocot crops or the
loss of dicot crops? What will be an ideal response?
A properly designed controlled experiment should include both a(n) ________ group and a(n) ________ group
Fill in the blank(s) with correct word
Which type of light is not absorbed strongly by photosynthetic pigments?
a) Far-red b) Blue c) Red