Practice Quiz

MCAS Biology Practice - Question List

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151. Which of the following terms applies to traits, such as human eye color, that are controlled by more than one gene?
  1. codominant
  2. polygenic
  3. recessive
  4. sex-linked
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152. Which of the following is the best example of an organism maintaining homeostasis?
  1. a wolf panting after a chase
  2. a spider catching an insect in a web
  3. a cricket becoming infected by a virus
  4. a mole digging tunnels in the ground
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153. Which of the following explains why legume plants are less likely than other terrestrial plants to experience nitrogen limitation?
  1. Legume plants need less nitrogen than other plants do.
  2. Legume plants have nitrogen-fixing bacteria on their roots.
  3. Legume plants catch insects to supply themselves with nitrogen.
  4. Legume plants can absorb nitrogen directly from the atmosphere.
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154. In pigeons, the allele B produces ashred feathers. The allele b produces blue feathers. The B allele is dominant to the b allele. A pigeon with genotype Bb is crossed with a pigeon with genotype bb. What percent of the offspring are expected to have ash-red feathers?
  1. 0%
  2. 25%
  3. 50%
  4. 100%
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155. Which of the following is the basic structural unit of the nervous system?
  1. axon
  2. neuron
  3. red blood cell
  4. white blood cell
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