The presence of certain hormones during pregnancy stimulate the development of the milk-producing structures of the breast known as
A. lactiferous sinuses.
B. alveoli.
C. areolae.
D. septa.
Answer: B
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Proteins and mRNA exit the nucleus via ________.
nuclear pores endoplasmic reticulum vesicles centromeres
Considering the following analogy, determine which component represents ATP's role in the cells of the body. As the river flows past the old mill, it turns the water wheel, which in turns powers the movement of the millstone that grinds the wheat.
A. Water wheel B. Wheat C. River D. Millstone
Which of the following correctly states how a gustatory receptor will be stimulated by an acidic or sour compound?
A) G proteins will be activated. B) Hydrogen ions will diffuse into the receptor cell causing depolarization. C) Sodium ions will diffuse into the receptor cell causing depolarization. D) Second messengers will be activated. E) Adenylate cyclase will be activated.
Vitamin ________ promotes the cross-linking of collagen molecules in bone and other connective tissue.
Fill in the blank(s) with the appropriate word(s).