A student who was trying to determine the concentration of Escherichia coli in a sample completed a total plate count assay. After plating 0.1mL of the 10^-6 dilution and incubating the plate at 37C for 24 hours the student counted 210 colonies on the plate. What is the CFU/mL of the original sample?

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above