Studying the signals of animal ________________________________________ can benefit the staff
Fill in the blank(s) with correct word
behavior and posture
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The tympanic membrane
a. vibrates when struck by the incus b. contains the organ of Corti c. produces ear wax d. is connected to the stapes e. is not characterized by any of the above
Which of the following enzymes digests carbohydrates?
A) amylase B) amylase, lactase, and sucrase C) lactase D) sucrase
Serous fluid secreted by both the parietal and visceral layers of the pericardium, and released into the pericardial cavity, lubricates the membranes and facilitates the almost frictionless movement of the heart when it beats.
a. true b. false
When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across the plasma membrane and various channel proteins close. These channels would be called
A. chemical-gated channels. B. ligand-gated channels. C. open-gated channels. D. nongated ion channels. E. voltage-gated channels.