Environmentalism is ________.
A. the study of ecosystems
B. a philosophical and social movement concerned with preserving the environment
C. the study of how energy flows through an ecosystem
D. the same discipline as ecology
Answer: B
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Over time, a sensory neuron will decrease its responsiveness to a specific signal. This
A. accommodation B. appreciation C. adaptation D. alleviation
Explain how hagfish are still able to consume their dead or dying prey, even though hagfish lack jaws
What will be an ideal response?
How does the digestion and absorption of fat differ from that of carbohydrates?
A. Processing of fat does not require any digestive enzymes, whereas the processing of carbohydrates does. B. Fat absorption occurs in the stomach, whereas carbohydrates are absorbed from the small intestine. C. Fat must be partially digested by bacteria in the large intestine before it can be absorbed, which is not the case for carbohydrates. D. Most absorbed fat enters the lymphatic system, whereas carbohydrates directly enter the blood. E. Carbohydrates need to be emulsified before they can be digested, whereas fats do not.
Which scenario illustrates a homeostatic mechanism?
a. city buses transporting people from their houses to their jobs b. water stored behind a dam that is released to make electricity c. a thermostat keeping a house at 72 degrees d. a series of underground passageways connected to a large building e. the daily temperature variations during one season