Briefly describe oxidation-reduction reactions. What does it mean for a molecule to be reduced or oxidized? Identify and explain the mnemonic device provided in the text for oxidation and reduction reactions. See if you can make one up yourself.
What will be an ideal response?
Oxidation-reduction reactions occur when electrons are transferred from one molecule to another. The molecule that is oxidized in the reaction loses electrons while the reduced molecule gains electrons. OIL RIG (oxidation is
loss, reduction is gain) is the mnemonic provided in the textbook.
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In the diagram, which structure(s) moves towards the center of the sarcomere (closer together) when the fiber contracts?
a) A b) D c) J d) Both A and D. e) None of these are correct.
What does excess postexercise oxygen consumption represent?
A) the difference between the amount of oxygen needed for totally aerobic muscle activity and the amount actually used B) the amount of oxygen equal to the oxygen already used C) the amount of oxygen taken into the body immediately after the exertion D) amount of oxygen needed for aerobic activity to accomplish the same amount of work
What type of chemical bond forms when electrons are shared unequally between two atoms?
What will be an ideal response?
The space between the iris and ciliary body and the lens is the
A) anterior chamber. B) posterior chamber. C) pupil. D) canal of Schlemm. E) vitreous body.