What is a tastant?
A. A substance dissolved in saliva that causes taste cells to depolarize.
B. A supporting cell in the olfactory epithelium that connects the sensations of taste and olfaction.
C. A cell found within a taste bud that depolarizes when stimulated.
D. A structure found within the inner ear that translates vibration into sound.
Answer: A
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Select the correct statement about oxygen transport in blood
A) During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently. B) Increased BPG levels in the red blood cells enhance oxygen-carrying capacity. C) A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal. D) During normal activity, a molecule of hemoglobin returning to the lungs carries one molecule of O2.
Which of the following functions is carried out by both aqueous and vitreous humor?
A. Controls the amount of light entering the eye B. Nourishment of the eye C. Generation of a visual image D. Cleanses the eye E. Refraction of light rays
John, a younger teenager, notices that he is experiencing a lot of pimples and blackheads, which frequently become infected. What is causing this problem?
What will be an ideal response?
Which type of epithelial tissue is found lining the trachea?
A. Transitional epithelium B. Simple cuboidal epithelium C. Stratified squamous epithelium D. Pseudostratified ciliated columnar epithelium E. Simple columnar epithelium