Digestion refers to the
A) progressive dehydration of indigestible residue.
B) mechanical breakdown of food.
C) chemical breakdown of food.
D) mechanical and chemical breakdown of food.
E) release of water, acids, enzymes and buffers by organs.
D
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Which of the following lists all of the events that occur with respiration?
A. Ventilation, external and internal respiration, and cellular respiration B. Inflating and deflating alveoli C. Delivering carbon dioxide to cells and removing oxygen from cells D. Inhaling and exhaling
The anterior pituitary gland secretes _____.?
A) ?growth hormone B) ?vasopressin C) ?oxytocin D) ?calcitonin
In hydrolysis reactions, compounds react with
A) hydrogen, causing decomposition. B) glucose, causing decomposition. C) water, causing decomposition. D) carbon, causing decomposition. E) water, causing synthesis.
When Na+ channels open, what happens to the Na+ ions?
What will be an ideal response?