Although several classes of antibacterial drugs act by inhibiting protein synthesis, only one acts by inhibiting the actual initiation of protein synthesis. What is this class of drugs?

A) Sulfonamides
B) Chloramphenicol
C) Vancomycin
D) Fluoroquinolones
E) Oxazolidinones


Ans: E) Oxazolidinones

Biology & Microbiology

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If you were to digest this DNA with PstI, which length of DNA fragment would migrate the fastest on an agarose gel?  

A 6.85 kb EcoRI fragment of DNA is shown below. The location of several restriction sites is indicated. Scale is approximate.


A.  803
B.  2622
C.  3425
D.  235

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?

  Gather Content
· What do you already know about restriction enzymes?

  Consider Possibilities
· What other information is related to the question? Which information is most useful?
  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

Chromosomes are copied during what stage of the cell cycle?

a. M b. D c. G1 d. G2 e. S

Biology & Microbiology

Alejandro Bonifacio is interested in studying which

of the following as a nutritious alternative to many grain crops? a. rice b. wheat c. spinach d. quinoa e. all of these

Biology & Microbiology

A chemical reaction is defined as spontaneous if there is a net loss of free energy during the reaction process. However, spontaneous reactions do not always occur rapidly

Favorable biological reactions require ______________ to selectively speed up reactions and meet the demands of the cell. (a) heat (b) ATP (c) ions (d) enzymes

Biology & Microbiology