Salivary amylase is activated once it enters the acidic environment of the stomach.
Answer the following statement true (T) or false (F)
False
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An individual's hematocrit would vary with
A. age. B. sex. C. altitude. D. All of the choices are correct.
Bones are constantly undergoing resorption for various reasons. Which of the following cells accomplishes this process?
A) osteoclast B) osteocyte C) osteoblast D) stem cell
Place the following steps in the correct order for transduction of a chemical odorant into a nerve signal
1. Odorants reach receptors in the cilia of olfactory neurons. 2. cAMP opens ions channels that allow sodium and calcium ions to enter the cell. 3. The G-protein activates an enzyme, adenylate cyclase, to convert ATP into cyclic AMP (cAMP). 4. The binding of an odorant activates a G-protein which then detaches from the receptor. 5. The membrane is depolarized. Depolarization that reaches threshold at the axon hillock triggers an action potential and transduction has been achieved. A) 1, 3, 4, 2, 5 B) 1, 4, 3, 2, 5 C) 1, 2, 3, 4, 5 D) 1, 4, 2, 3, 5
Carbohydrate digestion begins in the ________, whereas protein digestion begins in the ________.
A. mouth; stomach B. mouth; small intestine C. stomach; small intestine D. liver; small intestine E. small intestine; stomach