A large number of copies of any DNA segment can be obtained by:
a. introducing foreign DNA into a microorganism so that it can be replicated.
b. stimulating increased transcription of the appropriate sequence of mRNA.
c. stimulating increased translation of the appropriate DNA molecule.
d. inducing the production of DNA from proteins.
e. stimulating reverse transcription of tRNA.
a
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The primary reason surplus carbohydrates in plants are stored as starch is because:
A. they would otherwise be utilized as energy sources even if such energy was not needed at that time. B. the space they occupy as carbohydrates is needed for other macromolecules. C. energy is needed in the nucleus, and only starch is capable of being transported into the nucleus. D. leaving them as individual monosaccharides would upset the osmotic balance of the cell.
Describe the pressure-flow hypothesis
What will be an ideal response?
Which of the following does not influence the strength of a stimulus?
1.frequency of action potentials 2.how many axons are responding 3.size of the action potentials 4.which axons are responding
The rungs of the DNA ladder are formed by base pairs
a. joined by covalent bonds. b. joined by hydrogen bonds. c. joined by ionic bonds. d. NOT joined to each other