Chapter 34: Q. 8 (page 974)
A scientist dissects a new species of animal. If the animal’s digestive system has a single stomach with an extended small intestine, to which animal could the dissected specimen be closely related?
a. lion
b. snowshoe hare
c. earthworm
d. eagle
Option b is the correct answer.
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Which of the following statements about the small intestine is false?
a. Absorptive cells that line the small intestine have microvilli, small projections that increase surface area and aid in the absorption of food.
b. The inside of the small intestine has many folds, called villi.
c. Microvilli are lined with blood vessels as well as lymphatic vessels.
d. The inside of the small intestine is called the lumen.
Excess glucose is stored as ________.
a. fat
b. glucagon
c. glycogen
d. it is not stored in the body
How do birds digest their food in the absence of teeth?
The gut microbiome (the bacterial colonies in the intestines) has become a popular area of study in biomedical research. How could varying gut microbiomes impact a person’s nutrition?
Many distance runners “carb load” the day before a big
race. How does this eating strategy provide an
advantage to the runner?
a. The carbohydrates cause the release of insulin.
b. The excess carbohydrates are converted to fats,
which have a higher calorie density.
c. The glucose from the carbohydrates lets the muscles
make excess ATP overnight.
d. The excess carbohydrates can be stored in the
muscles as glycogen
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