Can you check my answers?

1. Omnivores eat ___.
A. omnies, which are small green mice
B. only insects
C. only vores, which are small Australian photosynthesizing bats
D. both plants and animals

2) Most animals are
A. bulk feeders.
B. substrate feeders.
C. suspension feeders.
D. fluid feeders.
E. parasites.

3) The essential function of the digestive system is to
A. get food into a form that can move into the circulatory system.
B. add nutrients to foods.
C. ensure that not too many fats are put into circulation.
D. remove microorganisms from the digestive tract.
E. guard against the release of waste from the digestive tract.

4) An animal digestive tract that consists of two openings (a mouth and anus) is called
A. an excretory system.
B. the alimentary canal.
C. the digestive enzyme center.
D. an intestine.
E. a mammalian crop.

5)The main function of an earthworm’s gizzard is to
A. moisten food.
B. store food.
C. digest vitamins.
D. absorb nutrients.
E. grind food.

6) Digestion takes place in specialized compartments for all of the following reasons EXCEPT
A. the environment of digestion must favor the action of digestive enzymes.
B. the environment of digestion must protect the food.
C. the environment of digestion must be contained.
D. the animal’s body must be protected from its own digestive enzymes.
E. specialization of the sites of digestion promotes efficiency.

7) Human saliva performs all of the following functions EXCEPT
A. lubricating food.
B. neutralizing food acids.
C. controlling bacterial populations.
D. hydrolyzing starch.
E. hydrolyzing proteins.

Alternating waves of muscular contraction and relaxation starting in the esophagus and running the length of the digestive tract are called ___.
A. cyclosis
B. musculodigestion
C. peristalsis
D. metaboly

9) The Heimlich maneuver is performed to forcibly
A. elevate the diaphragm.
B. depress the diaphragm.
C. squeeze the ribs.
D. compress the intestines.
E. straighten the back.

10) Food in the digestive tract is called chyme after ___.
A. the tongue mixes it with saliva
B. the stomach processes it
C. all nutrients have been absorbed by the small intestines
D. elimination through the anus

11) The function of the pyloric sphincter is to
A. retain chyme in the stomach until pepsin digestion is complete.
B. periodically release chyme into the duodenum in periodic squirts.
C. release bile into the duodenum when chyme is present.
D. release bile and pancreatic secretions into the duodenum when chyme is present.
E. release pancreatic secretions into the duodenum when chyme is present.

12) Heartburn is usually caused by the
A. secretion of acid by the lining of the lower esophagus.
B. reflux of chyme from the stomach into the lower esophagus.
C. retention of food at the bottom of the esophagus by a sphincter that is reluctant to open.
D. irritation of the lower esophagus by substances in spicy food.
E. compression of the lower esophagus by an overfilled stomach.

13) Most gastric ulcers are caused by
A. overconsumption of coffee.
B. overuse of aspirin and/or ibuprofen.
C. excessive mental stress.
D. spiral-shaped bacteria.
E. overconsumption of alcohol.

14) In the digestive system, most nutrient absorption occurs in the
A. stomach.
B. liver.
C. pancreas.
D. small intestine.
E. large intestine.

15) Which of the following is NOT a function of the pancreas?
A. produces many enzymes for digestion
B. produces a bicarbonate solution
C. produces bile
D. releases glucose-controlling hormones

16) Nutrients absorbed by the intestines move directly to the liver, which
A. converts the nutrients into monomers.
B. converts excess glucose to glycogen.
C. produces platelets for blood clotting.
D. manages the amount of glucose that is converted to polysaccharides.
E. converts glucose to alcohol.

17) Without villi, a person would not be able to ___.
A. produce vitamin K
B. absorb enough nutrients
C. produce pepsin
D. both produce vitamin K and absorb enough nutrients

18) Absorption of water is a major function of the
A. cecum.
B. esophagus.
C. colon.
D. rectum.
E. appendix.

19)Which of the following statements regarding animal digestive systems is FALSE?
A. We expect that an herbivore will have a longer alimentary canal than a carnivore of similar body size.
B. Meat is more diff
19.Which of the following statements regarding animal digestive systems is FALSE?
A.We expect that an herbivore will have a longer alimentary canal than a carnivore of similar body size.
B.Meat is more difficult to digest than vegetable matter because of its protein content.
C.Many herbivorous animals have cellulose-digesting microbes in their colon and cecum.
D.Prokaryotes in the colon and cecum digest plant material.
E.rumination helps to soften and breakdown plant fibers, making them more accessible to digestion by microbes.

20) Multiple Choice
Vegetarians who rely on a single type of plant food
A. may become severely dehydrated.
B. run the risk of depleting their liver of glycogen.
C. are soon unable to produce sufficient quantities of bile.
D. may become protein-deficient.
E. live longer than people who ingest animal protein.

MY ANSWERS
D
A
A
B
E
B
E
C
A
B
A
E
B
D
C
B
B
C
A
D
Sorry!