aerobic and anaerobic respiration

Question 1

aerobic

Answer 1

respiration that can only take place in the presence of oxygen

Question 2

anaerobic

Answer 2

respiration that takes place whether oxygen is present or not
also takes place in the absence of oxygen
also called fermentation

Question 3

equation of anaerobic respiration in bacteria and yeasts

Answer 3

glucose -> small amounts of energy + carbon dioxide + ethanol

Question 4

alcoholic fermentation

Answer 4

is important for the baking industry as well as for the purpose of making beer, wine and spirits. the sweet small of baking bread is caused by the ethanol that evaporates and the carbon dioxide bubbles cause the dough to rise and expand.

Question 5

lactic acid fermentation

Answer 5

allows human muscle cells to compensate for the lack of oxygen mostly due to vigorous exercise.

Question 6

in muscle cells

Answer 6

glucose -> lactic acid + energy
once the oxygen concentration in the muscle cells increases again, the lactic acid is broken down into carbon dioxide, water and energy.
lactic acid -> carbon dioxide + water + energy

Question 7

obligate anaerobes

Answer 7

need environments where there is no oxygen as they cannot grow in its presence. some obligate anaerobes are even harmed by oxygen.

Question 8

define alcoholic fermentation.

Answer 8

is a biological process which converts sugars into cellular energy, producing ethanol and carbon dioxide as by-products.