Explain the ways in which glucose is broken down in the absence or shortage of oxygen.

First step in the breakdown of glucose
Glucose → ___

During vigorous exercise in muscle cells of humans
Glucose →_ + _

During fermentation in yeast
Glucose → _ + _ + ___

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Q. Name the substance whose build up in the muscles during vigorous physical exercise may cause cramps.

Q. What type of respiration takes place in human muscles during vigorous physical exercise? Give reason for your answer.

Q. Fill in the blanks and explain the statements.
a. After complete oxidation of a glucose molecules, ---- --- --- number of ATP molecules are formed.
b. At the end of glycolysis, ---- --- -- molecules are obtained.
c. Genetic recombination occurs in -- -- -- phase of prophase of meiosis-I.
d. All chromosomes are arranged parallel to equatorial plane of cell in -- -- -- phase of mitosis.
e. For formation of plasma membrane, --- --- --- molecules are necessary.
f. Our muscle cells perform -- -- -- type of respiration during exercise.

During fermentation, pyruvate is converted into carbon dioxide and G. In our muscle cells during vigorous exercise pyruvate is converted into H. In mitochondria, it is converted into carbon-dioxide and I. The fermentation process in yeast is also called J while that in mitochondria is referred to as K.

Identify G,H,I,J and K.

Q. Fill in the blank and explain the statement.

Our muscle cells perform__________ type of respiration during exercise.

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Explain the ways in which glucose is broken down in the absence or shortage of oxygen. First step in the breakdown of glucose Glucose → _____ During vigorous exercise in muscle cells of humans Glucose →_____ + _____ During fermentation in yeast Glucose → _____ + _____ + _____

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Explain the ways in which glucose is broken down in the absence or shortage of oxygen.

First step in the breakdown of glucose
Glucose → ___

During vigorous exercise in muscle cells of humans
Glucose →_ + _

During fermentation in yeast
Glucose → _ + _ + ___