What is the medium used in the membrane filter (MF) procedure to differentiate fecal coliforms and Escherichia coli?
A) mannitol salt agar
B) eosin-methylene blue agar
C) triple sugar iron agar
D) blood agar
Answer: B
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Which of the following correctly lists the terms in hierarchical order from smallest to largest?
a. electron, atom, carbon element, water molecule, carbohydrate b. atom, electron, carbohydrate, carbon element, water molecule c. carbohydrate, carbon element, atom, water molecule, electron d. water molecule, carbon element, electron, carbohydrate, atom
In a cell-mediated immune response, how does a helper T cell activate cytotoxic T cells?
a. antibodies b. cytokine signaling c. receptor signaling d. via cross-talk with macrophages e. neural signaling
Nitrogen is used in plant cells to produce which of the following?
A. sugars B. proteins and nucleic acids C. proteins D. sugars and nucleic acids E. nucleic acids
Should we allow (or urge) testing of minor-age children or teens for adult-onset disorders for which there is no treatment or cure?
What will be an ideal response?