What is cytokinesis?
A) The stage of the cell cycle that happens before the cell is ready to divide its DNA
B) The stage of the cell cycle during which the cell separates its duplicated DNA
C) The stage of the cell cycle during which the cell duplicates its DNA
D) The stage of the cell cycle after the cell has divided its DNA and during which the cytoplasm gets divided
D
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Which is true about C. botulinum?
A. It is anaerobic. B. It may form spores. C. It produces a neurotoxin. D. It does not grow well below pH 4.5. E. All of the choices are correct.
Which of the following is a water mold that
was responsible for the Irish famine in the mid- 1800s?
a. Phytophthora b. Plasmodium c. E. coli d. Staphylococcus e. Trichomonas
Totipotent nuclei are capable of:
a. controlling the expression of other genes in the nucleus. b. directing normal development of an organism. c. causing cells to lose the ability to differentiate. d. undergoing unlimited nuclear divisions. e. stopping the cell cycle at will
The hypothesis that cowpox could provide protection against smallpox was tested by ________ and provided the basis for the first vaccine
A) Robert Koch B) Edward Jenner C) Eduard Buchner D) Louis Pasteur E) Lazzaro Spallanzani