These white blood cells are concentrated in the
lining of respiratory passages, are important
phagocytes that protect the lungs, and present
antigens to T cells. These white blood cells are
a. B lymphocytes.
b. macrophages.
c. neutrophils.
d. dendritic cells.
e. mast cells
D
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Enzymes don't change the DG of a reaction
Indicate whether the statement is true or false.
Which of the following does not indicate microbe involvement in energy and nutrient flow?
A. Formation of greenhouse gases, CO2 and methane B. Thermal hot springs warmed by heat from earth's interior C. Decomposition of dead matter and wastes D. Digestion of complex carbohydrates in animal diets
A(n) ____ includes the entire genome
a. cDNA library b. transcribed library c. genomic library d. RNA library e. plasmid library
Constipation can be caused by
a. emotional stress. b. a low-fiber diet. c. a sedentary lifestyle. d. dehydration. e. all of these.