Choose the statement that correctly describes the structure or function of dendrites.
A. Are thin extensions of the axon
B. Transmit graded electrochemical impulses toward the cell body
C. Release neurotransmitters to initiate graded potentials in adjacent cells
D. Transmit action potentials away from the cell body
Answer: B
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Small desert mammals are often osmotically stressed in addition to being heat stressed; therefore they will want to
a. avoid heat loss by evaporative cooling and instead employ heat storage mechanisms to deal with heat stress. b. avoid heat loss by evaporative cooling and instead burrow to seek cooler microclimates. c. avoid heat loss by evaporative cooling and instead restrict their activity to night when ambient temperatures are cooler. d. avoid heat loss by entering into extended periods of sleep and inactivity during the summer (estivation) which is similar to hibernation by some animals in the winter. e. avoid heat loss by evaporative cooling by burrowing and restricting activity to times with cooler temperatures.
How many molecules of oxygen can each molecule of hemoglobin carry?
A. 1 B. 2 C. 4 D. Approximately 100 E. Approximately 280 million
How many functional eggs are produced from one germ cell (oogonium) by the process of oogenesis?
A. 1 B. 2 C. 4 D. 8 E. The number varies from month to month.
Which of the following procedures requires BOTH gloves and goggles or a face shield??
A) ?Brushing a client's teeth B) ?Serving food to a client C) ?Controlling a wound that is spurting blood D) ?Giving eye care