Guard cells are often associated with __________, special epidermal cells that provide a reservoir of
water and ions.
a. companion cells
b. cuticle cells
c. cork cells
d. sclerenchyma cells
e. subsidiary cells
E
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A single motor neuron and the population of muscle fibers that it innervates is called the:
A. motor unit. B. motor endplate. C. neuromuscular junction. D. excitation-contraction coupling. E. twitch fiber.
The enhancement of a response to a stimulus following a novel pre-stimulus is called ____
Fill in the blank with the appropriate word.
Describe at least 3 adaptations of modern whales adapted for a completely aquatic existence
What will be an ideal response?
Much gene expression in multicelluar organisms focuses on quantitative gene expression of the genes
in various tissues. __________________ Indicate whether the statement is true or false.