When a person has laryngitis, he or she cannot speak. What must happen to permit normal speech?
A) Inflammation in the bronchioles has to go down before enough air can enter the lungs.
B) The swelling of the vocal cords must decrease so they can vibrate normally.
C) Inflammation in the trachea has to go down before enough air can enter the lungs.
D) The epiglottis must cover the glottis.
B
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How does the body prevent the immune system from destroying the body's own cells?
What will be an ideal response?
The reactions that occur in the thylakoid membranes are:a
the energy-releasing reactions. b. the photorespiration reactions. c. the sugar-producing reactions. d. the carbon fixation reactions. e. the light-dependent reactions
Sperm pass through several stages during their development. What is the earliest stage in which the cell becomes haploid?
a. sperm b. secondary spermatocyte c. spermatogonium d. spermatid
The fermentation product known as silage is
A. a step in the production of brandy. B. a means of food preservation. C. a means of making plant materials more appealing to livestock. D. a meat product. E. made from milk.