Practice Quiz

MTEL General Curriculum Practice Exam - Question List

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36.
A significant difference between plant and animal cells is that plant cells have:
  1. Cellular membranes.
  2. Cell walls
  3. Cytoplasm.
  4. Ribosomes.
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37.
Maple trees in midlatitude deciduous forests grow leaves in mid-May, shading the forest floor. Herbaceous flowering plants on the forest floor below them begin to grow earlier and bloom in April. This example best illustrates how different species:
  1. Occupy separate niches within an ecosystem to avoid competition.
  2. Compete with each other for the same resources.
  3. Mutually benefit from their relationship.
  4. Rely on different resources within the same ecosystem.
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38.
A vegetable farmer has a problem with a particular type of insect pest. Every month during the growing season, the 
farmer sprays a pesticide on the vegetables to control the pest. After five years of spraying, the farmer notices that the pesticide has become less effective at controlling the insect pest. This reduction in the pesticide's effectiveness is most likely due to:
  1. The evolution of a mechanism in the insects to break down and excrete the pesticide.
  2. An increase in the number of eggs laid by each female insect in response to the pesticide exposure.
  3. The increasing proportion of pesticide-resistant insects that have survived in the population.
  4. A change in the feeding habits of the insect so as to avoid the highest concentrations of pesticide.
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39.
Most of the chemical bonding that occurs between elements during the formation of molecular compounds results from which of the following?
  1. The exchange or combination of protons within the atomic nuclei of different atoms.
  2. The magnetic attraction between the opposite poles of different types of atoms.
  3. The transfer or sharing of the outer- most electrons of two or more atoms.
  4. The electrical attraction between protons and neutrons in two or more different types of atoms.
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40.
Which of the following explains why a teaspoon of table salt (sodium chloride) dissolved in a cup of hot water does not increase the volume of the water by an amount equal to the volume of the added salt?
  1. The crystal structure of the salt breaks down as it dissolves, decreasing the distance between individual salt particles.
  2. The ions of sodium and chloride fit between the water molecules, increasing the density of the salt- water solution.
  3. The addition of the salt decreases the surface tension of the water molecules, increasing the evaporation rate.
  4. The chloride ions released from salt as it dissolves combine with water molecules, reducing the mass of the dissolved crystals.
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