In bacteria living next to hot deep sea vents the usual electron donors are?

A. Carbon compounds
B. Iron atoms
C. Copper ions
D. Sulfur compounds


Answer: D. Sulfur compounds

Biology & Microbiology

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During an ecology field trip to a lake, your professor asks you to take temperature readings at various depths and record your data. At 5 meters, you note a temperature of 25°C and at 10 meters you record a temperature of 10°C. Readings at 20 meters and below stay fairly consistent around 8°C. The temperature readings of 25°C, 10°C, and 8°C represent the:  

A.  epilimnion,thermocline, and hypolimnion. B.  epilimnion,hypolimnion, and thermocline. C.  hypolimnion, epilimnion,and thermocline. D.  hypolimnion, thermocline,andepilimnion. E.  thermocline,epilimnion, and hypolimnion. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about thermal stratification? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Which of the following is a type of roots?

A. buttress B. pneumatophores C. prop D. lateral E. All of the choices are correct

Biology & Microbiology

In describing the parts of the respiratory system, the word "septum" designates a partition in the

a. larynx. b. nasal cavities. c. pharynx. d. glottis. e. lungs.

Biology & Microbiology

Most of the filtrate is reabsorbed through the walls of the:a

distal convoluted tubule. b. loop of Henle. c. proximal convoluted tubule. d. collecting duct. e. glomerulus

Biology & Microbiology