help@askiitians.com

+91-87964 74404

Grade 12th pass10 grade science

The correct sequence of anaerobic respiration in yeast is (a) Glucose −→−−−−−Cytoplasm Pyruvate −→−−−−−−−Mitochondria Ethanol + Carbon dioxide (b) Glucose −→−−−−−Cytoplasm Pyruvate −→−−−−−Cytoplasm Lactic Acid (c) Glucose −→−−−−−Cytoplasm Pyruvate −→−−−−−−−Mitochondria Lactic Acid (d) Glucose −→−−−−−Cytoplasm Pyruvate −→−−−−−Cytoplasm Ethanol + Carbon dioxide

Harshit Singh

4 Years agoGrade 12th pass

1 Answer

Jayesh Vashishtha

4 Years ago

Dear student,

Part 1 - Definition - Anaerobic respiration

Fermentation is a type of anaerobic respiration in which pyruvic acid converts into ethanol and carbon dioxide.

Fermentation follows glycolysis (responsible for the production of two pyruvic acid molecules from hexose sugar molecules such as glucose) during anaerobic respiration instead of Krebs cycle.

Part 2 - Chemical Process of Fermentation

In this process, glucose is partially oxidized to form acids and alcohol.

In organisms like yeast, the pyruvic acid is converted to ethanol and carbon dioxide (CO2).

However, in animal cells during muscle exercise, pyruvic acid reduces to lactic acid in case of inadequacy of oxygen for cellular respiration.

Two enzymes, alcohol dehydrogenase and acid-decarboxylase, catalyze the reactions of alcohol fermentation in yeast.

The reaction proceeds as follows:-

Pyruvic acid → Acetaldehyde + CO2 → Ethanol

Part 3 - Location

Both glycolysis and alcohol fermentation occur in the cytoplasm of yeast cell.

Part 4 - Conclusion

From the above discussion, we are able to conclude that alcohol fermentation in yeast occurs only in the absence of oxygen during which glucose is partially oxidized to ethanol and CO2.

Final step : The correct sequence of anaerobic reactions in yeast is

Glucose →cytoplasm Pyruvate →cytoplasm Ethanol + Carbon dioxide

regards,

team Askiitians

What type of questions asked from the lesson of magnetic effect of electric current

10 grade science

1 Answer Available

Last Activity: 10 Months ago

Wavelength of green light is
A) 400-450 nm
B) 500-550 nm
C) 660-720 nm
D) 720-800 nm

10 grade science

1 Answer Available

Last Activity: 1 Year ago

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

10 grade science

1 Answer Available

Last Activity: 1 Year ago

What are the main components of our environment? Explain each of them briefly.

10 grade science

1 Answer Available

Last Activity: 1 Year ago

What are examples of hydrotropism plants?

10 grade science

1 Answer Available

Last Activity: 1 Year ago

View all Questions