Examine Figure 23.2 in your textbook. The group "fish" includes all vertebrates except the tetrapods. The taxon "fish" is therefore a _____ group

A. monophyletic
B. paraphyletic
C. polyphyletic


B

Biology & Microbiology

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Which of the following is true of hydrogen peroxide?

A. It is a sterilant for inanimate objects and is quickly inactivated on living tissue. B. It leaves a toxic residue. C. It is broken down by catalase into water and oxygen. D. It is even more effective when used in combination with peracetic acid. E. It is a sterilant for inanimate objects and is quickly inactivated on living tissue; it is broken down by catalase into water and oxygen; AND it is even more effective when used in combination with peracetic acid.

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Is it possible to be a "carrier" for Huntington's Disease (someone who will never develop the disorder but capable of passing the allele to ones offspring)?

a. Yes b. No

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Cervical cancer

a. kills about 3,600 U.S. women each year. b. can affect young women. c. death occurs more often in women who have not had a pap smear. d. can be caused by genital HPV which has about 80% infectivity in sexually active women in the U.S. e. includes all of these.

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