Practice Quiz

MTEL Biology Practice Exam - Question List

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11.
Scientists have developed plants that contain genes from microbes to help them kill insects. Some people are concerned that transgenic agricultural crops might transfer genes to other species. Which of the following is the basis for this concern?
  1. Plant genes have promoter sequences that are similar to those of microbes.
  2. Transgenic plants may be unusually susceptible to native diseases.
  3. Most microbes are known to exchange DNA through conjugation.
  4. Transgenic DNA is designed to be incorporated into new genomes.
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12.
A story in a newspaper reports that post-surgical patients who received a type of alternative therapy involving light touching of the body report less severe pain than those who did not receive the therapy. The story concludes that this therapy should be adopted in all hospitals. Which information would be most useful to a reader in assessing the validity of this conclusion?
  1. The percentage of patients in all hospitals who report that they have experienced severe pain after undergoing surgery.
  2. The estimated cost to hospitals of providing the alternative therapy to all of their postsurgical patients.
  3. The percentage of patients reporting reduced pain after receiving other widely used treatments such as traditional massage or talking with staff.
  4. The level of pain reported by post-surgical patients before and after they received the alternative therapy.
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13.
The ability of plants to transport water and dissolved nutrients against the force of gravity is directly attributable to the:
  1. Cohesion of water molecules.
  2. Breaking of hydrogen bonds in liquid water.
  3. Temperature-induced changes in water density.
  4. High specific heat of liquid water.
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14.
A solution with a pH of 3 is how many times more acidic than a solution with a pH of 6?
  1. 2x
  2. 10x
  3. 1000x
  4. 2000x
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15.
The immense diversity of biological molecules results most directly from the:
  1. Reactivity of oxygen.
  2. Mass of phosphorus.
  3. Availability of nitrogen.
  4. Structure of carbon.
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