Please Help Quick,Under Anaerobic Condition,Explain What Happens To Glucose In Yeast And In Humans?

Please Help Quick,Write The Balanced Chemical Equation For Respiration In Plants.

Please Help Quick,Write The Balanced Chemical Equation For Respiration In An Athlete In A Race.

DNAandRNADIFF*

Converted to latic acid to produce NADH.

I apologize, it is converted to lactic acid to produce NAD+ from NADH.

A group of students hypothesize that the amount of alcohol produced during fermentation depends on the amount of glucose that yeast are supplied with because glucose is required for yeast to produce energy in the form of ATP when oxygen is in limited supply. They perform the experiment using 0.5 grams of yeast in a 500 mL solution of one of the following glucose solutions: 5%, 10%, 15%, 20%, 25% and 30%.

True/False: A 0% glucose solution would serve as a good control for this experiment.

Under anaerobic conditions, the process of glucose metabolism differs between yeast and humans. Let's explain what happens to glucose in each case:

In yeast:
1. Glycolysis: Yeast cells undergo glycolysis, which is the breakdown of glucose into two molecules of pyruvate. This process occurs in the cytoplasm and does not require oxygen.
2. Fermentation: Since oxygen is not available, yeast cells proceed with fermentation to regenerate NAD+ (a crucial molecule for glycolysis). There are two main types of fermentation in yeast:
a. Alcoholic fermentation: Pyruvate is converted into ethanol (alcohol), releasing carbon dioxide as a byproduct.
b. Lactic acid fermentation: In some yeast species, pyruvate is converted into lactic acid instead of ethanol.

In humans:
1. Glycolysis: Similar to yeast, glucose undergoes glycolysis in human cells under anaerobic conditions. It takes place in the cytoplasm and does not require oxygen.
2. Lactic acid fermentation: In the absence of oxygen, the pyruvate produced during glycolysis is converted into lactic acid. This conversion is catalyzed by the enzyme lactate dehydrogenase.

The primary difference between yeast and humans is that yeast undergo alcoholic fermentation, producing ethanol and carbon dioxide, while humans undergo lactic acid fermentation, resulting in the production of lactic acid. This difference is due to variations in the enzymes present in the two organisms, as well as their metabolic pathways.