BSCS Biology: A Molecular Approach

Chapter 2: Energy, Life, and the Biosphere

Digestion

1.
Plant digestion, which takes place inside the cells with foods the plant has made itself, is known as ____.
A)intracellular digestion
B)ingestion
C)extracellular digestion
D)peristalsis
2.
At what point in the digestive process does peristalsis occur?
A)after the nutrients have entered the bloodstream
B)as the food moves through the digestive tract
C)when the food reaches the appendix
D)as the food enters the mouth
3.
Which of the following indicates the correct sequence of the substances that act upon food during human digestion?
A)trypsin, gastrin, pancreatic juice, salivary amylase
B)salivary amylase, gastrin, pancreatic juice, trypsin
C)salivary amylase, trypsin, gastrin, pancreatic juice
D)pancreatic juice, trypsin, gastrin, salivary amylase
4.
What is the epiglottis?
A)a tissue that prevents food from entering the trachea
B)an organ that secretes digestive juices
C)a large, single-celled parasite that breaks down carbohydrates
D)the tube that connects the mouth to the stomach
5.
The small, fingerlike projections that extend from the intestinal cavity wall and transfer substances into the bloodstream (see illustration) are called ____.

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A)pepsins
B)villi
C)transferals
D)gastrins
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