To confirm a presumptive identification of an isolate of streptococci, serological testing is performed.
A) True
B) False
A) True
Feedback: This answer is true, final confirmation in the laboratory often relies on serological tests that determine whether or not specific antigens are present on the cells of an isolate.
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The atmosphere of primitive Earth is usually classified as an oxidizing atmosphere
Indicate whether the statement is true or false.
When a virus takes over the metabolism of a cell, it forces the cell to manufacture which of the following?
a) more mitochondria for energy for the virus b) more liposomes to isolate themselves from water c) more food particles d) more viruses e) more bacteria
Chemical energy:
A) is a form of potential energy stored in bonds between molecules. B) contains less energy than kinetic energy. C) is kinetic energy that has not been converted to heat. D) is best described as "the energy of motion." E) is stored energy that is unavailable to do work.
The wild Tasmanian devil population has decreased 70% since 1996 due to a contagious form of cancer known as Devil Facial Tumor Disease. Researchers have found several individuals that show partial resistance to the cancer. Attempts to breed these individuals and preserve their DNA in the population would fall under what level of biological diversity?
A. Ecosystem diversity B. Disease diversity C. Genetic diversity D. Species diversity