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.
