Modified stems that branch from the main stem of the plant and grow horizontally on the ground or just under it are
referred to as ____.
a. rhizomes
b. bulbs
c. stolons
d. corms
e. tubers
ANSWER: c
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________ is the polysaccharide most commonly found in highly fibrous foods such as celery.
A. Chitin B. Cellulose C. Glycogen D. Starch
In a phospholipid, glycerol is bound to
a. three phosphate groups, each of which are bound to fatty acids. b. two fatty acid chains and one phosphate group. c. two phosphate groups, each of which are bound to hydrogen. d. three phosphate groups, two of which are bound to fatty acids. e. two phosphate groups on one side and three fatty acids on the other side.
After gastrulation, the next event in human embryo formation is ____
a. formation of the bones b. formation of the neural tube c. the initiation of the heart beat d. formation of the pharyngeal arches e. apoptosis between fingers and toes
Which of the following situations might cause normal microbiota to become opportunistic pathogens?
A) growth of microbes on the surface of intact skin B) growth of microorganisms on the excreted cellular wastes and dead cells in the large intestine C) treatment of a cancer patient with radiation D) growth of Lactobacillus on the surface of teeth E) presence of Entamoeba in the lumen of the colon