Due to a chemical equilibrium, a syntrophic relationship can be disrupted if the product from the first partner's metabolism is removed too quickly
Indicate whether the statement is true or false.
Answer: FALSE
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A scout troop sets out on a backpacking trip. Soon, an unexpected storm gets them drenched, and the troop leaders discover that few boys have packed warm clothes. Several scouts start shivering uncontrollably, a sign of hypothermia. The leaders call off the trip and the group heads back to their cars. This shivering response was
A. an attempt to produce heat by burning large amounts of ATP. B. a maladaptive response that wastes energy. C. an attempt to produce heat by creating friction with their clothing. D. a social signal that evolved to alert adults to take action. Shivering is used by mammals to increase body heat when the hypothalamus detects a body temperature below the set point. Although the behavior involves muscles, the outcome is not movement but "wasted" energy in the form of heat. This is an example of nature reusing a body structure for an additional purpose.
A factor in the development of multidrug-resistant strains of Mycobacterium tuberculosis is that
A. many TB patients live in less-than ideal circumstances. B. the daily multidrug regimen lasts up to 9 months. C. multiple antibiotics must be taken in the daily regimen. D. All of the above contribute to the development of resistant strains of Mycobacterium tuberculosis.
The human respiratory surface consists of
a. the walls of alveoli and pulmonary capillaries b. the walls of alveoli and pulmonary capillaries and their basement membranes c. the walls of bronchioles, alveoli, and capillaries d. the walls of bronchioles, alveoli, capillaries, and their basement membranes e. the walls of alveoli
In what way are the senses of taste and smell different?
A. Taste buds contain cilia while olfactory cells contain microvilli. B. Taste depends on a "weighted average" of all the taste messages, while smell depends on the signature of olfactory cells stimulated. C. The sensation of taste occurs in the spinal cord, while the sensation of smell occurs in the cerebral cortex. D. There are hundreds of different tastes but only five different smell families. E. Taste buds are modified neurons and olfactory cells contain a pore with supporting cells and elongated cells.