All of the following are true statements about the lymphatic system EXCEPT that
A) the lymphatic system transports carbohydrates from the small intestine to the blood.
B) the lymphatic system returns fluids to the bloodstream.
C) lymphatic vessels resemble veins because they have valves.
D) the lymphatic system helps defend the body against disease.
A
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Root formation in stem cuttings can be improved by
the application of a. synthetic auxins. b. abscisic acid. c. salicylic acid. d. citric acid. e. nitric acid.
When food is abundant, the cellular slime mold secretes cAMP into the environment to signal the formation of a
multicellular slug-shaped colony. __________________ Indicate whether the statement is true or false.
The largest virus is bigger than the smallest bacterium.
a. true b. false
Why is there great value in preserving biodiversity hotspots?
A. Biodiversity hotspots have an indirect value to humans. B. Biodiversity hotspots have a direct value to humans. C. Biodiversity hotspots have a large diversity of species in them. D. Biodiversity hotspots are often a source of new medicines. E. All of these are values of preserving biodiversity hotspots.