How does the diameter of a prokaryotic cell compare with the diameter of a eukaryotic cell?

A. A prokaryote has twice the diameter of a eukaryote.
B. A prokaryote has one-half the diameter of a eukaryote.
C. A prokaryote has one-tenth the diameter of a eukaryote.
D. A prokaryote has ten times the diameter of a eukaryot


Ans: C. A prokaryote has one-tenth the diameter of a eukaryote.

Biology & Microbiology

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Which of the following two enzymes are needed to construct a cDNA library?  

A.  reverse transcriptase and DNA ligase B.  reverse transcriptase and Taq polymerase C.  DNA ligase and Taq polymerase D.  Taq polymerase and RNA polymerase 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 DNA libraries?   Consider Possibilities · Consider the different answer options. Which can you rule out?   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

When blood returns from the pulmonary circuit, it first enters which chamber of the heart?

a. left atrium b. left ventricle c. right atrium d. right ventricle e. both the left atrium and the right atrium

Biology & Microbiology

The portion of the DNA molecule that is translated is composed of

a. introns. b. anticodons. c. exons. d. transcriptions. e. exons and transcriptions.

Biology & Microbiology

Chun-Hong Chen and colleagues (2007 ) designed a new gene that would carry a strong selective advantage and confer the resistance to malaria on free-living mosquitoes. The gene was termed Medea, and this acronym stands for which of the following?

A) Maternal-effect depleted embryonic activation B) Maternal-effect dominant embryonic activation C) Maternal-effect deleterious embryonic arrest D) Maternal-effect dominant embryonic arrest

Biology & Microbiology