Constipation can be treated by adding fiber to the diet.
Answer the following statement true (T) or false (F)
True
Diets that lack sufficient fiber (found mostly in fruits, vegetables, and whole grains) can lead to constipation. Bulk laxatives, containing fiber, can help ease constipation.
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If the out-of-Africa hypothesis of human origins is correct, which of the following best describes the pattern of hominin migration from Africa?
A. H. ergaster migrated 2 million years ago; H. sapiens migrated 200,000 years ago. B. H. sapiens migrated once 2 million years ago and again 200,000 years ago. C. H. ergaster migrated once 2 million years ago and again 200,000 years ago. D. H. neanderthalensis migrated once 1.3 million years ago and H. sapiens migrated 200,000 years ago. E. H. heidelbergensis migrated 2 million years ago and H. sapiens migrated 200,000 years ago.
When humans are developing in utero they have characteristics that are not found in the fully developed infant. Which type of homology does this typify?
A. Developmental. B. Structural. C. Vestigal. D. Molecular. E. Both developmental and vestigal.
Mast cells
a. are anchored in tissue. b. secrete substances contained within their granules. c. will respond to injury or antigen. d. may respond to chemical signals from the nervous system. e. fit all of these characteristics
Which of the following is not associated with the small intestine?
A. bile and lipase B. brush border enzymes C. many villi D. gastric pits E. lacteals