Which of the following is the correct sequence of events during mitosis?
A) Nuclear membrane dissolves, chromosomes line up, chromosomes split, nuclear membrane forms
B) Nuclear membrane forms, chromosomes line up, chromosomes split, nuclear membrane dissolves
C) Chromosomes line up, nuclear membrane forms, nuclear membrane dissolves, chromosomes split
D) Chromosomes split, nuclear membrane dissolves, nuclear membrane forms, chromosomes line up
A
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In studies designed to determine the origin of HIV, how did the researchers first know that Marilyn the chimp may be infected with HIV?
A. She had been used in HIV research. B. She had tested positive for antibodies against HIV. C. She had HIV DNA in her tissues. D. She had symptoms of HIV infection, or AIDS. E. She had HIV RNA in her blood.
Place Koch's postulates in the correct order:
a. isolate microbe from infected subject and cultivate in pure culture b. inoculate susceptible host with pure culture, observe same disease c. Find evidence of a particular microbe in every instance of a disease. d. reisolate same microbe from subject inoculated with cultured microbe
Which function of the skeletal system requires the leg bones to be extremely strong?
A. They store minerals and fat. B. They support the entire body. C. They protect soft body parts. D. They permit flexible body movement. E. They produce blood cells.
Which of the following is a population?
A) the termites infesting your house along with the microorganisms living in their guts B) all of the termites that have ever lived C) all organisms living in your house D) the termites infesting your house