Which fossil would be the oldest in a given strata and why? What will be an ideal response?
ANSWER: The fossil from the deepest strata would be oldest. As newer materials deposit, the older
fossils get buried successively deeper.
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The _____________ bacterial group contains organisms that normally inhabit the intestinal tracts of humans (depending on diet), and can additionally break down cellulose
A. Bacteroidetes B. Firmicutes C. Heliobacteria D. Gram-positive E. Proteobacteria
Which of the following suggestions is not recommended for preventing obesity in children?
a. Provide food that is high in nutritional value. b. Make sure meals are low in fat. c. Ensure a consistent diet with little variety. d. Allow children to develop their own food preferences.
A cyclist rides her bike up a very steep hill. Which of the following statements properly describes this activity in energetic terms?
a) Potential energy in food is converted to kinetic energy as the cyclist's muscles push her up the hill b) Kinetic energy is highest when the cyclists is at the crest of hill c) The cyclist produces the most potential energy as she cruises down the hill's steep slope d) Potential energy is greatest when the cyclist is at the top of the hill e) both a) and d)
Which of the following will tend to produce adaptive changes in populations?
A) genetic drift B) gene flow C) natural selection D) the founder effect