Practice Quiz

MCAS Biology Practice - Question List

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156. A caterpillar eats an oak leaf. Which of the following best describes the energy transfer in this situation?
  1. Both the caterpillar and the leaf gain energy.
  2. Energy is transferred from the leaf to the caterpillar.
  3. Decomposers in the leaf obtain energy from the caterpillar..
  4. The oak tree gains energy when the caterpillar eats the leaf.
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157. The molecule ATP is composed of elements commonly found in organic molecules. Which of the following is one of these elements?
  1. aluminum
  2. calcium
  3. phosphorus
  4. tin
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158. There are two types of modern whales: toothed whales and baleen whales. Baleen whales filter plankton from the water using baleen, plates made of fibrous proteins that grow from the roof of their mouths. The embryos of baleen whales have teeth in their upper jaws. As the embryos develop, the teeth are replaced with baleen. Which of the following conclusions is best supported by this information?
  1. Primitive whales had teeth as adults.
  2. Toothed whales descended from baleen whales.
  3. Baleen whales are evolving into toothed whales.
  4. Descendants of modern baleen whales will have both teeth and baleen as adults.
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159. Which of the following explains why elements, such as carbon and oxygen, that are used in organic molecules are not permanently removed from the environment?
  1. They are replenished by sunlight.
  2. They are cycled through ecosystems.
  3. They are replaced by volcanic eruptions.
  4. They are produced constantly from nutrients.
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160. Some cells, such as human nerve and muscle cells, contain many more mitochondria than do other cells, such as skin cells. Why do some cells have more mitochondria than others?
  1. The cells use more energy.
  2. The cells store more nutrients.
  3. The cells degrade more proteins.
  4. The cells divide more frequently.
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