Which of the following is not normally found in saliva?
A. Protease
B. Lipase
C. Mucus
D. Amylase
E. Lysozyme
Answer: A
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Match the correct subatomic particle with the statement about it. Answers may be used once, more than once, or not at all.
1. An ion has gained or lost ________. 2. Isotopes of the same element differ by having different numbers of ________. 3. The identity of an element can be determined by the number of ________. 4. This particle has a charge of +1 and a mass of 1. 5. This particle has a charge of -1 and a negligible mass. 6. This particle has a neutral charge and a mass of 1.
Immunoglobulin ____ is associated with allergic reactions, attacking allergy-causing antigens
a. E b. D c. G d. M
After taking their wedding vows, a bride and groom often ceremonially use which of the following muscles before walking away from the altar?
A. Orbicularis oris B. Quadriceps femoris C. Platysma D. Levator labii superioris E. Depressor anguli oris
Which of these occurs when light strikes photoreceptors?
A. The chromophore retinal undergoes a change of shape. B. There is an increase in neurotransmitter release from photoreceptor cells. C. The photoreceptor cell membrane becomes depolarized. D. The concentration of cyclic GMP inside cells increases. E. The photoreceptor cells are stimulated and fire action potentials.