List three contributions of Ferdinand Cohn to the development of microbiology
What will be an ideal response?
Answer: Answers could possibly include: founding bacteriology as a separate science, studying Beggiatoa, discovering the genus Bacillus (along with its endospore formation and its life cycle), and devising methods to prevent contamination.
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During the germinal period, the fertilized ovum duplicates and forms a blastocyst. This hollow ball of cells
a. fills the amnion with fluid b. develops a tail for movement c. contains the embryonic disk d. shrinks in size and is absorbed by the blood
Describe the procedure used for colony hybridization and why it is useful
What will be an ideal response?
A reducing medium contains
A. sugars that can be fermented. B. inhibiting agents. C. extra oxygen. D. hemoglobin, vitamins, or other growth factors. E. substances that remove oxygen.
Cancer may arise as a result of
A) mutations associated with viral infection. B) mutations associated with chemical mutagens. C) mutations associated with radiation. D) spontaneous mutations. E) All of these