The internal cytoskeletal structure of cilia and flagella grows out from a structure called a basal body located near the cell surface. Based on this information, where would you predict the plus end of the microtubules to be located?
a) It is not possible to predict from the information provided.
b) near the basal body
c) near the tip of the cilia or flagella
d) at both ends of the cilia or flagella
Answer: c) near the tip of the cilia or flagella
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A. chemoreceptors. B. electromagnetic receptors. C. stretch receptors. D. thermoreceptors.
A cyclist rides her bike up a very steep hill. Which of the following statements properly describes this activity in energetic terms?
a) Potential energy in food is converted to kinetic energy as the cyclist's muscles push her up the hill b) Kinetic energy is highest when the cyclists is at the crest of hill c) The cyclist produces the most potential energy as she cruises down the hill's steep slope d) Potential energy is greatest when the cyclist is at the top of the hill e) both a) and d)
Perhaps a plant's greatest liability is its inability to ____.
A. produce growth hormones B. use aerobic respiration C. move when conditions around it deteriorate D. produce its own lipids and proteins E. respond to dwindling supplies of nutrients and water
Which of the following carry impulses toward the cell body of a neuron?
Axons Dendrites Glial cells Schwann cells