in desc.

    Chewing food to break it into smaller pieces is a(n) _____ change.
    a. chemical
    b. physical
    c. enzyme
    d. molecule

    The salivary gland
    a. makes chemicals that digest only fat.
    b. makes chemicals that digest only protein.
    c. makes chemicals that digest only carbohydrate.
    d. makes chemicals that digest protein and carbohydrate.
    e. makes chemicals that digest fat, protein, and carbohydrate.
    f. makes no chemicals that digest food.

    The pancreas
    a. makes chemicals that digest only fat.
    b. makes chemicals that digest only protein.
    c. makes chemicals that digest only carbohydrate.
    d. makes chemicals that digest protein and carbohydrate.
    e. makes chemicals that digest fat, protein, and carbohydrate.
    f. makes no chemicals that digest food.

    The liver
    a. makes chemicals that digest only fat.
    b. makes chemicals that digest only protein.
    c. makes chemicals that digest only carbohydrate.
    d. makes chemicals that digest protein and carbohydrate.
    e. makes chemicals that digest fat, protein, and carbohydrate.
    f. makes no chemicals that digest food.

    The stomach
    a. makes chemicals that digest only fat.
    b. makes chemicals that digest only protein.
    c. makes chemicals that digest only carbohydrate.
    d. makes chemicals that digest protein and carbohydrate.
    e. makes chemicals that digest fat, protein, and carbohydrate.
    f. makes no chemicals that digest food.

    The small intestine
    a. makes chemicals that digest only fat.
    b. makes chemicals that digest only protein.
    c. makes chemicals that digest only carbohydrate.
    d. makes chemicals that digest protein and carbohydrate.
    e. makes chemicals that digest fat, protein, and carbohydrate.
    f. makes no chemicals that digest food.

    The large intestine
    a. makes chemicals that digest only fat.
    b. makes chemicals that digest only protein.
    c. makes chemicals that digest only carbohydrate.
    d. makes chemicals that digest protein and carbohydrate.
    e. makes chemicals that digest fat, protein, and carbohydrate.
    f. makes no chemicals that digest food.

    Referring to the figure, which is where most digestion occurs?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which is the pancreas?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which makes bile?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which removes water from undigested food?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which is the large intestine?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which makes an acid?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which makes three enzymes?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which is the stomach?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which is where carbohydrates are first
    chemically changed?
    a.
    b.
    c.
    d.
    e.
    f.

    Referring to the Fig. in Question #17, which is where villi are located?
    a.
    b.
    c.
    d.
    e.
    f.

    The _____ has specialized organs for digestion.
    a. hydra
    b. earthworm
    c. tapeworm

    The _____ has no digestive system.
    a. hydra
    b. earthworm
    c. tapeworm

    The _____ has a single opening that serves as both mouth and anus.
    a. hydra
    b. earthworm
    c. tapeworm

    The _____ has two openings to the digestive system.
    a. hydra
    b. earthworm
    c. tapeworm

    Changes brought about by bile are a
    a. physical change
    b. chemical change

    Changes brought about by the teeth are a
    a. physical change
    b. chemical change

    Changes brought about by enzymes are a
    a. physical change
    b. chemical change

    Changes brought about when starch is digested to glucose are a
    a. physical change
    b. chemical change

    The pancreas empties its enzymes into the
    a. large intestine.
    b. small intestine.
    c. both choices a and b.
    d. neither choice a nor b.

    The salivary glands empty their enzymes into the
    a. small intestine.
    b. large intestine.
    c. pancreas.
    d. mouth.

    The gallbladder empties its chemicals into the
    a. stomach.
    b. pancreas.
    c. both a and b are correct.
    d. neither a nor b is correct.

    Food spends most of its time in the
    a. large intestine.
    b. liver.
    c. small intestine.
    d. stomach.

    Food spends the least amount of time in the
    a. large intestine.
    b. stomach.
    c. esophagus.
    d. small intestine.

    The small intestine, when compared with the large intestine, is
    a. the shorter of the two.
    b. the narrower of the two.
    c. the longer of the two.
    d. both b and c are correct.

    Heartburn is caused by acid moving from the stomach into the
    a. pancreas.
    b. heart.
    c. esophagus.
    d. small intestine.

    A covering of _____ usually protects the linings of the stomach and
    intestine against the action of acids and enzymes.
    a. saliva
    b. mucus
    c. bile
    d. villi

    The mouth helps in the chemical changing of fats.
    a. True
    b. False

    A chemical that speeds up the chemical change of food is called an
    enzyme.
    a. True
    b. False

    Bile helps in the digestion of protein.
    a. True
    b. False

    The breakdown of food into usable molecules is a chemical change.
    a. True
    b. False

    Digestion is the changing of food into a usable form.
    a. True
    b. False

    Glucose molecules result from protein digestion.
    a. True
    b. False