If you start with 3 double-stranded DNA fragments, after 4 cycles of PCR you will have ________ fragments.

A. 48
B. 24
C. 27
D. 12
E. 81


Answer: A

Biology & Microbiology

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Antibiotics that are given by injection are said to have a(n) ________ route of administration.

A. topical B. oral C. parenteral D. venal

Biology & Microbiology

Some protists have a pellicle, which is used for

a. defensive purposes. b. sexual reproduction. c. structural support. d. water absorption. e. food storage.

Biology & Microbiology

In a food chain consisting of four trophic levels, if the energy present in the top level is 48 kcal/m2/yr, how much energy do you expect in herbivores? (Use an energy transfer rate of 10%.)  

A.  4.8 kcal/m2/yr B.  48 kcal/m2/yr C.  480 kcal/m2/yr D.  4,800 kcal/m2/yr E.  48,000 kcal/m2/yr Clarify Question · What is the key concept addressed by the question? · What type of thinking is required?   Gather Content · What do you already know about energy flow?   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

Motor neurons carrying information to smooth muscle, cardiac muscle, and all other tissues and organs except skeletal muscle belong to the ________ division of the peripheral nervous system

Fill in the blank(s) with correct word

Biology & Microbiology