What is a mixotroph? 19 April 2018 a. b. c. d. An organism that can obtain energ
ID: 292627 • Letter: W
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What is a mixotroph? 19 April 2018 a. b. c. d. An organism that can obtain energy as a chemotroph and phototroph An organism that can obtain carbon as an autotroph and a heterotroph An organism that is neither autotrophic or heterotrophic An organism that is both a filter feeder and a detritovore 2. What is the largest reservoir of "fixed" nitrogen in the ocean? a. Ammonium b. Nitrite c. Nitrate d. Urea e. Cyanate 3. What is the process by which nitrate is converted the N2 gas? a. Denitrification b. Nitrification c. Ammonification d. Nitrogen fixation 4 True or False. Primary production in the ocean is comparable to that on 5. What is the largest reservoir of carbon on the planet? a. The atmosphere b. The ocean c. Living biomass d. Rocks The conversion of CO, to biomass is considered part of which part of the Earth's carbon cycle? a. Short term (days to years) b. Medium term (decades to centuries) c. Long term (thousands of years) d. Really long term (millennia) e. Anthropogenic 6. The conversion of fossil fuels to CO2 is considered part of which part of the Earth's carbon cycle? a. Short term (days to years) b. Medium term (decades to centuries) c. Long term (thousands of years) d. Really long term (millennia) e. Anthropogenic 7. The ocean's biological pump does what? a. transports carbon from the ocean to the atmosphere b. transports carbon from the surface ocean to the deep ocean c. transports carbon from the sediments to the ocean d. converts carbon from inorganic carbon to biomass 8. 9. The microbial loop refers to what? a. flagellated organisms that swim in spirals. b. rapid cycling of elements among a microbial food web in surface waters. c. remineralization of nutrients by microbes in deep waters. d. microbes mediating nitrogen transformations spanning 8 oxidation states in the ocean. e. microbes comprising the base of the food web that loops all the way up to whales. 10. In polar waters, what is thought to limit primary production? a. nitrogen. b. phosphorus. c. carbon. d. silicon. e. light.Explanation / Answer
1. What is a mixotroph?
Answer: b -an organism that can obtain carbon as an autotroph and a heterotroph
2. What is the largest reservoir of "fixed" nitrogen in the ocean?
Answer: a. Ammonium
3.What is the process by which nitrate is converted to N2 gas?
Answer: a. Denitrification
4. Tru or False. Primary production in the ocean is comparable to that on land.
Answer: False
5. What is the largest reservoir of carbon on the planet?
Answer: b. The ocean
6. The conversion of CO2 to biomass is considered part of which part of the Earth's carbon cycle?
Answer: d. Really long term (millennia)
7. The conversion of fossil fuel to CO2 is considered part of which part of the Earth's carbon cycle?
Answer: e. Anthropogenic
8. The ocean's biological pump does what?
Answer: b. transports carbon from surface ocean to the deep ocean
9. The microbial loop refers to what?
Answer: e. microbes comprising the base of the food web that loops all the way up to whales
10. In polar waters, what is thought to limit prmary poduction?
Answer: e. Light
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