Which of the following statements regarding cellulose is true?
A. Cellulose can be digested by human digestive enzymes.
B. Cellulose provides fiber or "roughage."
C. Cellulose is another name for glucose.
D. Cellulose is one of the units of a sucrose molecule.
E. Cellulose is a source of energy.
B
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The genetically programmed death of cells is called
A) differentiation. B) replication. C) apoptosis. D) metastasis. E) mitosis.
Receptors
a. respond to various physical or chemical changes in their environment. b. change other forms of energy into electrical energy. c. respond more readily to their adequate stimulus. d. are found at the peripheral endings of afferent neurons. e. all of these answers.
Before carbohydrates are absorbed, __________ digest disaccharides into monosaccharides.
a) pancreatic enzymes b) amylases c) bile salts d) brush border enzymes
A shallow depression on a bone is termed a
A) fossa. B) sulcus. C) facet. D) fissure. E) line.