__________ builds up in muscle cells due to lack of oxygen.

A) Glucose
B) Lactic acid
C) Ethanol
D) Pyruvate

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Lack of oxygen in muscles often leads to cramps in the legs of sprinters. This is due to conversion of pyruvate to :
(a) ethanol
(b) carbon dioxide
(c) acetic acid
(d) lactic acid

Question 12
The correct sequence of anaerobic reactions in yeast is

(a) $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e m i t o c h o n d r i a - ------- \to E t h a n o l + C a r b o n d i o x i d e$
(b) $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e c y t o p l a s m - ----- \to L a c t i c a c i d$
(c) $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e m i t o c h o n d r i a - ------- \to L a c t i c a c i d$
(d) $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e c y t o p l a s m - ----- \to E t h a n o l + C a r b o n d i o x i d e$

Q. During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
(a) ethanol
(b) chloroplast
(c) mitochondria
(d) golgi body

Question 33
Lack of oxygen in muscles often leads to cramps among cricketers. This happens due to

(a) Conversion of pyruvate to ethanol
(b) Conversion of pyruvate to glucose
(c) Non-conversion of glucose to pyruvate
(d) Conversion of pyruvate to lactic acid

Q. When there is lack of oxygen in our muscle cells, X gets converted into Y whose build-up in the cell leads to muscle cramps.

Identify both X and Y.
A) X- glucose; Y- pyruvate
B) X- pyruvate; Y- glucose
C) X- pyruvate; Y- ethanol
D) X- glucose; Y- lactic acid

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__________ builds up in muscle cells due to lack of oxygen. A) Glucose B) Lactic acid C) Ethanol D) Pyruvate

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__________ builds up in muscle cells due to lack of oxygen.

A) Glucose
B) Lactic acid
C) Ethanol
D) Pyruvate