Multiple Choice: Identify the letter of the choice that best completes the statement or answers the question.
a. intestine b. gizzard c. stomach d. mouth
2 The end product of protein digestion is ____.
a. bile b. maltose c. amino acids d. monosaccharides
3 One end product of the digestion of fats is ____.
a. lipase b. cholesterol c. glucose d. fatty acids
4 Examples of heterotrophs that carry out intracellular digestion are ____.
a. Rhizopus and mushrooms b. Venus's-flytrap and the pitcher plant c. Hydra and the earthworm d. Amoeba and Paramecium
5 Producers use photosynthesis to make ____.
a. carbohydrates b. water and carbon dioxide c. salts d. just carbon dioxide
6 Which of the following is the opposite of this grouping: autotroph, photosynthetic, self-feeder?
a. heterotroph, photosynthetic, digestion b. autotroph, animal, non-feeder c. heterotroph, non-photosynthetic, dependent feeder d. autotroph, photosynthesis, plant
7 Intracellular digestion is not aided by the process of ____.
a. chemical digestion b. elimination c. phagocytosis d. photosynthesis
8 Where does extracellular digestion take place?
a. within living cells b. between the layers of the phospholipid membrane c. outside of living cells d. occurs only within the mouth
9 The process of breaking down large food molecules to simpler and smaller ones capable of crossing cell's membrane is called?
a. nutrition b. digestion c. cell membrane action d. phagocytosis
10 Which of the following examples is correct?
a. Hydra and earthworms have two-way traffic. b. Hydra has one-way traffic. c. Earthworms have one-way traffic. d. Hydra and earthworms have one-way traffic.
11 In which organs would the following processes occur in the earthworm: physical change--chemical change--absorption of nutrients?
a. mouth—stomach—anus b. gizzard—stomach—intestine c. gizzard—intestine—intestine d. mouth—intestine—anus
12 Physical digestion is important because smaller pieces of food ____.
a. are more easily assembled into large molecules b. are more easily broken down by enzymes c. can pass through the membranes of cells d. can be taken in more easily through phagocytosis
13 Filter feeders typically are animals that ____.
a. are land based b. live in the water c. have lots of sharp teeth d. are slow moving and live in dry regions
14 Water, minerals, and vitamins ______.
a. are not used by the body b. are too large in size to be digested c. can already pass across cell membranes d. are not considered nutrients
15 Which would most likely be the best word derivation for autotroph?
a. auto = individual, troph = living thing b. auto = car, troph = mover c. auto = self, troph = nourishing d. auto = alone, troph = life form
16 The technical explanation for properly chewing food is that ____.
a. smaller food chunks are easier to swallow b. vitamins and minerals are removed from food during chewing c. autotrophs are not able to carry out this process d. chemical digestion may occur more efficiently with small food chunks
17 Humans have many thousands of tiny, fingerlike projections called villi found within the small intestines. These structures would be analogous to ____.
a. tentacles of a Hydra b. cells that line the gastrovascular cavity of Hydra c. the crop and gizzard of an earthworm d. the lack of an anus in Hydra
18 In Hydra all cells are near the gastrovascular cavity. In humans, no cell is far from its nutrients because of our ____.
a. digestive system b. nervous system c. circulatory system d. bilateral symmetry
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