Some protein channels in a cellular membrane are able to open or close in response to stimuli; because of this characteristic, these channels are called _________ channels.
Fill in the blank(s) with the appropriate word(s).
gated
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Which of the following is a weak electrical attraction between molecules?
A) ionic bond B) covalent bond C) polar bond D) metallic bond E) hydrogen bond
ndicate the primary function(s) of the structure shown in the figure.
A) structural component of cell membranes B) storage of glucose molecules C) energy source D) structural component of cell membranes, hormones, and digestive secretions in bile E) energy source, energy storage, and insulation
What is a muscle that provides the major force for producing a specific movement called?
A) a synergist B) an agonist C) an antagonist D) a fixator
Roger went for his yearly eye examination and was informed that his intraocular pressure was slightly elevated (at 22 mm Hg). The physician expressed concern over this condition and noted that if the condition got worse, eyedrops would be merited. What is wrong with Roger's eyes, and what are the possible consequences of this condition? Explain the function of eyedrops used for therapy.
What will be an ideal response?