When an encapsulated bacteria loses the ability to form capsules, it almost always loses its pathogenicity.
A) True
B) False
A) True
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A species that three sets of homologous chromosomes can have __ different combinations of chromosomes in its gametes?
A. 3 B. 6 C. 8 D. 27 E. 64
Which of the following statements about cancer is incorrect?
A. Cancers are the direct result of mutations in growth-regulating genes. B. Benign cells are those that have metastasized. C. Cancer cells can sometimes spread into the bloodstream. D. Malignant tumors are not encapsulated. E. Malignant tumors are invasive.
DNA moves within an electric field because it
A) is negatively charged. B) is positively charged. C) makes up chromosomes, which are slightly electromagnetic. D) can possess different charges (positive or negative), depending on its base sequence.
The process by which the cytoplasm of a eukaryotic cell divides to produce two cells is called
A) mitosis. B) cytokinesis. C) binary fission. D) telophase.