The sense of pain is one of the most important of all the senses. Nociception is critical to survival because
A. pain triggers behavioral responses that protect from further danger.
B. the activation or inhibition of enzymes are triggered by nociceptors in the brain.
C. signals from nociceptors trigger memories and emotions associated with pain.
D. signals from nociceptors tell an animal whether it has been injured and increase alertness and arousal.
Answer: A
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Which of the following is not an accurate comparison of human and insect respiratory
systems?
a. The insect tracheal system provides a large surface, while the lungs have only a small surface-to-volume ratio. b. Oxygen is transported via the circulatory system in humans, but the tracheal system in insects is separate from body fluids. c. Only humans can increase airflow using ventilation. d. Both gas exchange systems consist of a system of tubules to transport gases.
Organisms that make their own nutrients by capturing energy from nonliving resources (solar energy) are called
A. detritivores. B. parasites. C. decomposers. D. consumers. E. producers.
A bacterial pathogen has just entered the body of a person. Describe the sequence of events that lead to the production
of enzymes that will hydrolytically destroy the bacterial cell, beginning with events in the nucleus and ending with destruction of the pathogen. What will be an ideal response?
Part complete Identify the phase of mitosis, which ends when daughter chromosomes move to the centrioles at opposite poles of the cell.
a. metaphase b. prophase c. telophase d. interphase e. anaphase