What is telomerase?

A. an enzyme that adds bases back to the tip of chromosomes every time a cell divides
B. a chemical that allows the telophase stage of mitosis to proceed
C. a chemical involved in RNA synthesis
D. an enzyme that inhibits the formation of small blood vessels that feed a tumor
E. a protein found in abundance on colon cancer cells


Answer: A

Biology & Microbiology

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Strong chemical mutagens may be used to treat cancer cells. Is this a good or bad idea?

A. Good-kill those cancer cells as quickly as possible to cure the patient! B. Bad-these mutagens will also affect the non-cancerous cells, possibly leading to new cancerous states! C. Good and bad-they're very good at killing cancer cells, but depending on mode of administration, they could also be dangerous to non-cancerous cells. D. Bad-the cancer cells are already mutated. We don't want to mutate them more and make them more cancerous!

Biology & Microbiology

Which of the following is an enzyme?

a. fibrinogen b. fibrin c. plateletase d. thrombin e. plasminogen

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What is the contraction of smooth muscles that moves a bolus of food down the esophagus called?

A) emulsification B) elimination C) peristalsis D) detoxification

Biology & Microbiology

Who disproved the theory of spontaneous generation?

a. Hooke b. Koch c. van Leeuwenhoek d. Pasteur e. Virchow

Biology & Microbiology