Bananas are picked green, shipped to their
destination, and then sprayed with an artificial
plant hormone. Which plant hormone would be
used for this purpose?
a. auxin
b. gibberellin
c. ethylene
d. cytokinin
e. abscisic acid
C
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Which of the following is a cure for people with recurrent infection from Clostridium difficile?
A) Renal transplantation B) Genetic restructuring C) Grafting D) Fecal transplantation
Which one of the following statements is TRUE regarding the mitotic phase of the cell cycle?
A) The mitotic phase is longer than interphase. B) During cytokinesis, the cytoplasm divides and four daughter cells result. C) During mitosis, DNA is divided into two sets and distributed equally to the daughter cells. D) DNA of the cell is replicated during this phase. E) Most of the growth of the cell occurs during this phase.
The signs and symptoms of infection with Helicobacter pylori are the result of
A. damage to the lining of blood vessels by H. pylori. B. invasion by H. pylori into the mucosa of the large intestine. C. invasion by H. pylori into the mucosa of the stomach. D. the production of exotoxins by H. pylori in the intestines. E. the production of toxins by H. pylori in contaminated food.
All microorganisms are best defined as organisms that
A) Cause human disease B) Are too small to be seen with the unaided eye C) Lack a cell nucleus D) Are infectious particles E) Can only be found growing in laboratories