An unusual red sponge is discovered near a deep-sea vent. You want to determine if this is a new species of sponge, so you separate the cells for further study. A new lab assistant accidentally adds cells from a blue sponge to your preparation while you are at lunch. When you return, you find that the sponge cells have reaggregated into a multicellular organism. What do you see if the red and blue sponges are the different species?
A. one sponge with a red side and a blue side
B. one blue sponge and one red sponge
C. one sponge with blue and red randomly distributed
D. one purple sponge (mix of red and blue colors)
E. one sponge with alternating red and blue layers of cells
B. one blue sponge and one red sponge
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After the discovery of T. aquaticus, biologists found
forms of life adapted to extraordinary levels of a. acidity. b. alkalinity. c. salinity. d. pressure. e. all of these.
The typical brown color of feces comes from
a. blood cells. b. degraded food substances. c. bile pigments. d. melanin. e. digested blood from meats.
This mercury-containing chemical was once found in vaccines and thought to cause autism spectrum disorder (ASD)
A) thiamin B) thimerosol C) PDD-NOS D) thalidomide
Carbonic anhydrase in red blood cells:a
removes oxygen from the erythrocyte. b. carries carbon dioxide in the erythrocyte. c. converts carbon dioxide to carbonic acid. d. increases the pH of the blood. e. increases the permeability of the capillary to carbon dioxide.