Question Video: Identifying the Word Equation for Anaerobic Respiration in Yeast Cells | Nagwa Question Video: Identifying the Word Equation for Anaerobic Respiration in Yeast Cells | Nagwa

Question Video: Identifying the Word Equation for Anaerobic Respiration in Yeast Cells Biology • Second Year of Secondary School

Without including energy/ATP, state the word equation for anaerobic respiration in yeast cells.

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Video Transcript

Without including energy or ATP, state the word equation for anaerobic respiration in yeast cells. (A) Ethanol produces glucose plus carbon dioxide. (B) Glucose produces ethanol plus carbon dioxide. (C) Glucose produces carbon dioxide. (D) Glucose plus carbon dioxide produces ethanol.

Cellular respiration is the process in which cells extract energy by breaking down the bonds in glucose. Cellular respiration can occur in the presence or absence of oxygen. In aerobic respiration, glucose is combined with oxygen to produce carbon dioxide and water. Anaerobic respiration breaks down glucose to extract energy in the absence of oxygen. In animals and some bacteria, anaerobic respiration produces lactic acid from glucose. Yeast and other organisms also carry out anaerobic respiration, but they don’t produce lactic acid. Instead, they break down glucose in the absence of oxygen to produce ethanol and carbon dioxide, along with energy. This is called alcoholic fermentation.

Therefore, the correct word equation for anaerobic respiration in yeast cells is given by answer choice (B). Glucose produces ethanol and carbon dioxide.

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