The depressor anguli oris muscle
A. puckers the mouth for kissing.
B. contributes to pouting.
C. contributes to laughing and smiling.
D. causes crow's feet wrinkles.
E. raises the eyelid.
B
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Which type of lymphocyte produces and secretes antibodies?
A. Natural killer cell B. Cytotoxic T-lymphocyte C. Memory B-lymphocyte D. Memory T-lymphocyte E. Plasma cell
DNA differs from RNA in that:
a. DNA is double stranded b. DNA contains the base uracil c. DNA contains the base adenine d. All of the above
What are the smallest passageways in the lung with a ciliated epithelium?
A. Terminal bronchioles B. Respiratory bronchioles C. Segmental (tertiary) bronchi D. Alveolar ducts E. Alveoli
Since beans contain the essential amino acid methionine, beans are considered complete protein sources.
Answer the following statement true (T) or false (F)