Cell respiration questions?

Question

Two questions

1. What is the waste product of aerobic respiration?
2. Why is aerobic respiration vital for humans but not for yeast?

Answer 1

The waste product is Co2 in animals

Arobic respiration is not vital for yeast because the by product of yeast is o2

Answer 2

Chris A is correct in that the waste product of aerobic respiration is CO2.

Aerobic respiration uses oxygen molecules to capture free electrons which occurs from cellular respiration in mitochondria. Contrary to what many people think, though CO2 is the "waste product" of cellular respiration, it does not come directly from the O2 that is breathed in. Rather, CO2 comes from the breakdown of glucose sugar (C6H12O6) that you eat, while the oxygen you breathe joins with free electrons and the "H" from the glucose to make H2O.

Here is an explanation of the yeast part of your question. I found this portion online at the website shown below:

"Cellular respiration is the controlled breakdown of carbohydrate to carbon dioxide and water
with capture of some of the energy in the form of ATP. In the absence of oxygen, fermentation partially breaks down carbohydrate
and a small amount of energy is captured in the form of ATP. The products are different depending upon the organism involved; in the
case of yeast the products are ethanol and carbon dioxide. This is inefficient compared to respiration, but enables the yeast to
survive and grow where no oxygen is available."

Answer 3

1. Respiration gives off carbon dioxide and water molecules.
2. Humans need a lot more energy than yeast cells need. Aerobic respiration makes far more ATP per glucose cell than anaerobic respiration or fermentation (2 ATP only).

Answer 4

1 ) well the formula for cellular respiration is
6O2 + C6H12O6 -> 6H2O + 6CO2 (+36ATP)
so the products are 6H2O and 6CO2
which is water and carbon dioxide
(thats why we, humans, breathe out carbon dioxide)

2 ) because humans need much more energy ATP, the form of energy needed by cells, then yeast cells, cellular respiration wouldn't be appropriate for yeast cells because its
too much
:)

Answer 5

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