Amoxicillin is very effective for treating infections with Gram-positive bacteria but rarely causes side effects in humans. This is an example of

A. selective toxicity.
B. narrow spectrum of action.
C. a broad-spectrum antimicrobial.
D. antibiotic resistance.
E. altruism.


Answer: A

Biology & Microbiology

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Which egg is isotonic to the solution?  

  Three (3) eggs are boiled and all weigh 2g. The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes.


A.  Egg 1
B.  Egg 2
C.  Egg 3

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?

Gather Content
· What do you know about osmosis? What other information is related to the question?   

Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
 
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

The signal from the environment that triggers a stereotyped behavior is a  

A.  conditioned reflex. B.  fixed action pattern. C.  reinforcing stimulus. D.  releasing mechanism. E.  key stimulus (sign stimulus).

Biology & Microbiology

Arrange these three layers of the wall of a ureter from the innermost layer (on top) to the outermost layer (on the bottom).

a. Fibrous Connective tissue b. Mucosa c. Smooth muscle d. All of the above

Biology & Microbiology

The heart is located in which body cavity?

a. cranial b. thoracic c. spinal d. abdominal e. pelvic

Biology & Microbiology