A) The organism can survive short spells of anaerobic conditions an B) If glucos

Question

A) The organism can survive short spells of anaerobic conditions an B) If glucose levels are not high, there may be time to eliminate the a C) Fermentation can provide rapid ATP since it does not have to go t D) Alcohol fermentation represents an adaptation that allow organism variable oxygen availability E) All of the choices are real advantages of alcohol fermentation 12. True or false? (each statement is independent) (Disregard the tiny letters in the drawing, except for Q C) below) From the figure above representing a cell organelle: A) ALWAYS essential for production of large quantities of ATP B) Essential for aerobic respiration in human cells C) "c." in the figure above is the site of the ETC D) Releases pyruvic acid E) Releases CO2 F) Essential for the ETC in bacteria G) Glycolysis cannot take place without it H) Surrounded by a double membrane

Explanation / Answer

A. True. If mitochondria is absent then animal cells will rely on anaerobic glycolysis for the production of ATP. But only a small fraction of energy is discharged from the conversion of glucose into pyruvic acid. Moreover, in mitochondria pyruvate is oxidized and around 15 times more ATP is produced compared with glycolysis.

B. True. Aerobic respiration is required for the release of metabolic waste like CO2 which later on combine with H2O to form carbonic acid which helps in maintenance of blood pH. Furthermore, it helps in production of ATP.

C. False. ETC takes place in cristae.

D. False. During glycolysis pyruvate is released. In mitochondria ATP, CO2 and H2O are released.

E. True.

F. False. In bacteria membrane bound organelles like mitochondria and endoplasmic reticulum are absent. Therefore, ETC takes place in their cell membrane.

G. False. Glycolysis takes place in cytoplasm and does not require oxygen.

H. True. It possess two membranes:- Inner and Outer.

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