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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Solution

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

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

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

Q. State whether the following statements are true or false.
When not enough oxygen gets to muscle cells during a sprint, energy is provided by glycolysis of glucose to pyruvic acid and then conversion of these molecules to lactic acid.

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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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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