How many grams are in one mole of glucose? How many molecules of glucose are in
ID: 60471 • Letter: H
Question
How many grams are in one mole of glucose?
How many molecules of glucose are in 100 mmoles?
What does the term “glyco-lysis” imply?
How many moles of ATP are derived when 0.5 mol of glucose pass through the glycolytic pathway?
Why is fermentation so important under anaerobic conditions? (1 sentence or phrase)
The large intestine is essentially an anaerobic environment where resident bacteria can perform lactic acid fermentation. What products may these bacteria produce? (Give at least 2 possible products)
Explanation / Answer
Q1). How many grams are in one mole of glucose?
mass = moles x molar mass
= 1 * 180
= 180g
Q2). How many molecules of glucose are in 100 mmoles?
One mole of glucose contains 6.022 x 1023 molecules.
1mole =1000 mmoles
1000mmoles = 6.022 x 1023 molecules
100mmoles = 6.022 x 1022 molecules
Q3). What does the term “glyco-lysis” imply?
Glycolysis means breakdown of glucose into 2 molecules of pyruvic acid
Q4). How many moles of ATP are derived when 0.5 mol of glucose pass through the glycolytic pathway?
For one mole of glucose that passes through the glycolytic pathway a net of 2 ATP molecules are produced. Hence, for 0.5 mol of glucose that passes through, a net 1 mole of ATP is produced.
Q5). Why is fermentation so important under anaerobic conditions? (1 sentence or phrase)
Under less availability of oxygen conditions, glucose is converted to ATP + NADH + pyruvate. Fermentation will be used to regenerate NAD+. The NAD+ is used again in glycolysis with another glucose molecule. Without fermentation, glyolysis will finally stop if all NAD+ are converted into NADH. Therefore, no net gain of 2ATP will be produced, and the cell or organism will die.
Different types of fermentations are there.
In lactic acid fermentation, the pyruvate is converted into lactic acid. In alcoholic fermentation, the pyruvate is converted into carbon dioxide gas and ethyl alcohol (ethanol).
Q6). The large intestine is essentially an anaerobic environment where resident bacteria can perform lactic acid fermentation. What products may these bacteria produce? (Give at least 2 possible products)
Fermentation occurs in mammalian muscle during periods of intense exercise where oxygen supply becomes limited, resulting in the creation of lactic acid.
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