Suppose that an unknown organism from an alien planet is observed and found to have a diploid state only following fertilization. Meiosis follows and the majority of this organism's life is spent in a haploid state. Which multicellular organisms on Earth most closely resemble this type of life cycle strategy?
a. ferns
b. maple trees
c. humpback whale
d. some algae
Answer: d. some algae
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A mild fever is part of the body's second line of defense and aids the body by _________.
a. creating an inhospitable internal environment for pathogenic bacteria. b. increasing the rate of tissue repair. c. speeding up defense reactions. e. increasing the metabolic rate of body cells. e. All of the above are correct.
Single gene traits are more likely to be influenced by the environment than complex traits
A. true B. false
The alternative pathway of complement cascade activation begins with ________ binding to the surface of a microbe
A) C1 B) factor B C) C3b D) C5a E) C5b
Which is matched incorrectly?
1. malaria; mosquito 2. balantidiasis (caused by Balantidium); pigs 3. trichomoniasis; kissing bug 4. toxoplasmosis; cat 5. trypanosomiasis (African sleeping sickness); tsetse fly