The correct sequence of anaerobic reactions in yeast is

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

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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

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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

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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

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Solution

The correct option is D $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e c y t o p l a s m - ----- \to E t h a n o l + C a r b o n d i o x i d e$
Respiration is the catabolic process, which releases energy stored in food. It can be aerobic or anaerobic. Aerobic respiration occurs in presence of oxygen in mitochondria whereas, anaerobic respiration occurs in absence of oxygen in cytoplasm. Two important types of anaerobic respiration are lactic acid fermentation which occurs in muscles of higher animals and alcoholic fermentation, which is carried out by unicellular organisms like yeast. Yeast breaks down pyruvic acid anaerobically into ethanol and carbon dioxide in the cytoplasm. The pyruvic acid is produced in cytoplasm in the process of glycolysis.
Hence the correct option is D.

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Similar questions

Q. 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 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 13
Which of the following is most appropriate for aerobic respiration?

(a) $G l u c o s e m i t o c h o n d r i a - ------- \to P y r u v a t e c y t o p l a s m - ----- \to C O_{2} + H_{2} O + E n e r g y$
(b) $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e m i t o c h o n d r i a - ------- \to C O_{2} + H_{2} O + E n e r g y$
(c) $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e + E n e r g y m i t o c h o n d r i a - ------- \to C O_{2} + H_{2} O$
(d) $G l u c o s e c y t o p l a s m - ----- \to P y r u v a t e + E n e r g y m i t o c h o n d r i a - ------- \to C O_{2} + H_{2} O + E n e r g y$

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. Which of the following statement are correct?
A. Pyruvate can be converted into ethanol and carbon dioxide by yeast.
B. Fermentation takes place in aerobic bacteria.
C. Fermentation takes place in mitochondria
D. Fermentation is a kind of anaerobic respiration.

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