Question

The graph below represents the blood lactic acid concentration of an athlete during a race of 400m and shows a peak at point D.​

Answer 1

Answer:

Anaerobic Respiration

Explanation:

★ QUESTION :

Lactic acid production has occurred in the athlete while running in the 400m race. Which of the following processes explains this event ?

a) Aerobic respiration

b) Anaerobic respiration

c) Fermentation

d) Breathing

★ ANSWER :

Anaerobic Respiration

★ EXPLANATION :

Sometimes, when there is a lack of oxygen in our muscle cells, another pathway for the break-down of pyruvate is taken. Here the pyruvate is converted into lactic acid which is also a three-carbon molecule. This build-up of lactic acid in our muscles during sudden activity causes cramps.

This Anaerobic Respiration takes place in our muscle cells often when we do difficult works like running long distance , exercise a lot. You must have surely experienced it !

★ EQUATION OF ANAEROBIC RESPIRATION THAT TAKES PLACE IN OUR MUSCLE CELLS :

$\rm C_{6}H_{12}O_{6} \: { ( Glucose)\: (6 - carbon \: molecule)} \: \underset{ \rm{} }{\xrightarrow{\text{ In \: Cytoplasm }}} \: 2 \: C_{3}H_{4}O_{3} \: (Pyruvate)(3 - carbon \: molecule) \: \underset{ \rm{In \: our \: muscle \: cells} }{\xrightarrow{\text{ Lack \: of \: oxygen}}} \: \: C_ 3 H_ 6 O_ 3 \: (Lactic Acid) (3 - Carbon \: molecule) \: + \: Energy \: (2 \: ATP)$

Answer 2

Answer:

★ ANSWER :

Anaerobic Respiration

\begin{gathered} \\ \end{gathered}

★ EXPLANATION :

Sometimes, when there is a lack of oxygen in our muscle cells, another pathway for the break-down of pyruvate is taken. Here the pyruvate is converted into lactic acid which is also a three-carbon molecule. This build-up of lactic acid in our muscles during sudden activity causes cramps.

\begin{gathered} \\ \end{gathered}

This Anaerobic Respiration takes place in our muscle cells often when we do difficult works like running long distance , exercise a lot. You must have surely experienced it !

\begin{gathered} \\ \end{gathered}

★ EQUATION OF ANAEROBIC RESPIRATION THAT TAKES PLACE IN OUR MUSCLE CELLS :

\rm C_{6}H_{12}O_{6} \: { ( Glucose)\: (6 - carbon \: molecule)} \: \underset{ \rm{} }{\xrightarrow{\text{ In \: Cytoplasm }}} \: 2 \: C_{3}H_{4}O_{3} \: (Pyruvate)(3 - carbon \: molecule) \: \underset{ \rm{In \: our \: muscle \: cells} }{\xrightarrow{\text{ Lack \: of \: oxygen}}} \: \: C_ 3 H_ 6 O_ 3 \: (Lactic Acid) (3 - Carbon \: molecule) \: + \: Energy \: (2 \: ATP)C

6

H

12

O

6

(Glucose)(6−carbonmolecule)

In Cytoplasm

2C

3

H

4

O

3

(Pyruvate)(3−carbonmolecule)

Inourmusclecells

Lack of oxygen

C

3

H

6

O

3

(LacticAcid)(3−Carbonmolecule)+Energy(2ATP)

\begin{gathered} \\ \end{gathered}