The collars on the cells of choanoflagellates have the function of:
A. protecting the flagellum
B. filtering bacterial food from the water
C. directing currents away from the flagellum
D. storing waste materials of the cell
E. attaching to the substrate
B. filtering bacterial food from the water
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In 2005, a spot that is one centimeter from the center of a woody stem of an oak tree is in the bark. In what tissue will a spot that is one centimeter from the center be in 2050?
A) bark B) secondary phloem C) vascular cambium D) secondary xylem
Glycolysis and the Krebs cycle yield 10 molecules of NADH per molecule of glucose. How many molecules of ATP will be made from them in the electron transport system?
A. 38 B. 36 C. 10 D. 30 E. 2
Why would rapid change in climate potentially lead to ecological problems?
A. Evolution is unlikely to occur quickly enough to keep pace with biome changes. B. Animals don't migrate fast enough. C. Most biome shifts lead to rainforest formation and shading out of native plants. D. Water availability will decrease, driving aquatic species extinct. E. All of the answer choices are correct.
Members of the genus Thiothrix are sheathed bacteria that can replicate by releasing gonidia from the open end of the sheath.
Answer the following statement true (T) or false (F)