HUMAN PHYSIOLOGY
BREATHING AND RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Only occurs in organisms w/o mitochondria
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Can produce lactic acid or ethanol
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Use sulphur or nitrate as final electron acceptor
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Humans can undergo anaerbic cell resp
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Detailed explanation-1: -In anaerobic environments sulfate serves as terminal electron acceptor and is reduced to sulfide, giving rise to both the formation of metal sulfides in sediments and the evolution of hydrogen sulfide gas.
Detailed explanation-2: -An example of the ecological importance of anaerobic respiration is the use of nitrate as a terminal electron acceptor, or dissimilatory denitrification, which is the main route by which fixed nitrogen is returned to the atmosphere as molecular nitrogen gas.
Detailed explanation-3: -Answer: During anaerobic cellular respiration, glucose is broken down without oxygen. The chemical reaction transfers glucose energy to the cell. In fermentation, instead of carbon dioxide and water, lactic acid is produced which can lead to painful muscle cramps.
Detailed explanation-4: -The answer is b. It occurs in the absence of oxygen. Anaerobic respiration occurs for an animal cell when there is an absence of oxygen.