Plasmid cloning vectors generally contain genes for which two traits?

a. lacZ production and ampicillin resistance
b. ?-galactosidase enzyme production and ampicillin resistance
c. DNA ligase production and sticky ends
d. DNA ligase and reverse transcriptase production
e. DNA polymerase production and antibiotic resistance


ANSWER: b

Biology & Microbiology

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A newborn is identified as having cystic fibrosis. While both parents are healthy, a genetic screening of both parents will most likely reveal:

A. the father is a carrier of the mutant CF allele. B. the mother is a carrier of the mutant CF allele. C. both mother and father are carriers of a mutant CF allele. D. neither mother nor father are carriers; spontaneous mutation caused the baby's disease.

Biology & Microbiology

Which diagram correctly illustrates the distribution of ions in a resting neuron? (Note: A larger symbol indicates a higher concentration of that ion.)



A.  A
B.  B
C.  C
D.  D

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

Gather Content/Choose Answer
· What do you already know about ions in cells? What other information is related to the question?

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

What are hydrogen bonds?

What will be an ideal response?

Biology & Microbiology

Which of the following represents the possible genotype(s) resulting from a cross between two individuals that are

heterozygous (Bb)? a. BB and Bb b. BB, Bb, and bb c. BB only d. Bb only e. bb only

Biology & Microbiology