7. Food often contains bacteria, but the HCl of the stomach is effective in killing most ingested microbes.

21. Which of the following is least involved in the mechanical breakdown of food, digestion, or absorption?        

15. Another term for swallowing is deglutition.

If you double the mass of fusion material in a Hydrogen bomb, you quadruple the amount of energy generated.

8. All the chemical and mechanical phases of digestion from the mouth through the small intestine are directed toward changing food into forms that can pass through the epithelial cells lining the mucosa into the underlying blood and lymphatic vessels.

45. Which of the following are types of papillae on the tongue that contain taste buds?        

10. The peritoneum is the most extensive serous membrane in the body.

If you are driving at 30 miles per hour and increase your speed to 60 miles per hours, you quadruple your kinetic energy.

6. The circular folds of the small intestine enhance absorption by causing the chyme to spiral, rather than to move in a straight line, as it passes through the small intestine.

In retroactive interference,