All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
UPSC Exam  >  UPSC Questions  >  During fatigue muscle contains:a)More ATP, le... Start Learning for Free
During fatigue muscle contains:
  • a)
    More ATP, less glycogen
  • b)
    Less ATP, more lactic acid
  • c)
    Less ATP, less lactic acid
  • d)
    More ATP, more lactic acid
Correct answer is option 'B'. Can you explain this answer?
Clear all your UPSC doubts with EduRev
Verified Answer
During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, mo...
Low levels of ATP exist within the muscle fibers and can immediately provide energy for contraction. However, the pool is very small and after a few muscle twitches will be exhausted.
Long-term muscle use requires the delivery of oxygen and glucose to the muscle fiber to allow aerobic respiration to occur, producing the ATP required for muscle contraction. If the respiratory or circulatory system cannot keep up with demand, then energy will be generated by the much less efficient anaerobic respiration.
 
View all questions of this test
Most Upvoted Answer
During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, mo...
Less ATP, more lactic acid

Explanation:
Fatigue is a state of extreme tiredness and exhaustion that occurs as a result of prolonged or intense physical activity. During fatigue, various changes occur in the muscles, including a decrease in ATP (adenosine triphosphate) levels and an increase in lactic acid production.

ATP:
ATP is the primary energy source for muscle contractions. It is produced through various metabolic pathways, including aerobic metabolism (in the presence of oxygen) and anaerobic metabolism (in the absence of oxygen). During normal muscle activity, ATP is constantly being produced and utilized to provide energy for muscle contractions.

However, during fatigue, the demand for ATP exceeds the rate of ATP production. This leads to a decrease in ATP levels in the muscle.

Lactic Acid:
When ATP is produced through anaerobic metabolism, a byproduct called lactic acid is also produced. Lactic acid is formed when glucose is broken down in the absence of oxygen. This process is called glycolysis.

During fatigue, as the muscle continues to contract and ATP levels decrease, the reliance on anaerobic metabolism increases. This leads to an accumulation of lactic acid in the muscle.

Impact of Less ATP and More Lactic Acid:
The decrease in ATP levels during fatigue impairs muscle contraction and reduces the force-generating capacity of the muscles. This results in muscle weakness and fatigue.

The accumulation of lactic acid can also have negative effects on muscle function. Lactic acid is acidic in nature, and elevated levels can disrupt the pH balance within the muscle cells. This can interfere with various metabolic processes and contribute to muscle fatigue and discomfort.

Furthermore, lactic acid can also impair muscle contraction by inhibiting the release of calcium ions, which are necessary for muscle contractions.

In summary, during fatigue, there is a decrease in ATP levels and an increase in lactic acid production in the muscle. These changes contribute to muscle weakness, fatigue, and impaired muscle function.
Explore Courses for UPSC exam

Similar UPSC Doubts

It has long been known that the rate of oxidative metabolism (the process that uses oxygen to convert food into energy) in any animal has a profound effect on its living patterns. The high metabolic rate of small animals, for example, gives them sustained power and activity per unit of weight, but at the cost of requiring constant consumption of food and water. Very large animals, with their relatively low metabolic rates, can survive well on a sporadic food supply, but can generate little metabolic energy per gram of body weight. If only oxidative metabolic rate is considered, therefore, one might assume that smaller, more active, animals could prey on larger ones, at least if they attacked in groups. Perhaps they could if it were not for anaerobic glycolysis, the great equalizer. Anaerobic glycolysis is a process in which energy is produced, without oxygen, through the breakdown of muscle glycogen into lactic acid and adenosine triphosphate (ATP), the energy provider. The amount of energy that can be produced anaerobically is a function of the amount of glycogen present—in all vertebrates about 0.5 percent of their muscle’s weight. Thus, the anaerobic energy reserves of a vertebrate are proportional to the size of the animal. If, for example, some predators had attacked a 100-ton dinosaur, normally torpid, the dinosaur would have been able to generate almost instantaneously, via anaerobic glycolysis, the energy of 3,000 humans at maximum oxidative metabolic energy production. This explains how many large species have managed to compete with their more active neighbours: the compensation for a low oxidative metabolic rate is glycolysis.Q. The passage suggests that the total anaerobic energy reserves of a vertebrate are proportional to the vertebrate’s size because

It has long been known that the rate of oxidative metabolism (the process that uses oxygen to convert food into energy) in any animal has a profound effect on its living patterns. The high metabolic rate of small animals, for example, gives them sustained power and activity per unit of weight, but at the cost of requiring constant consumption of food and water. Very large animals, with their relatively low metabolic rates, can survive well on a sporadic food supply, but can generate little metabolic energy per gram of body weight. If only oxidative metabolic rate is considered, therefore, onemight assume that smaller, more active, animals could prey on larger ones, at least if they attacked in groups. Perhaps they could if it were not for anaerobic glycolysis, the great equalizer. Anaerobic glycolysis is a process in which energy is produced, without oxygen, through the breakdown of muscle glycogen into lactic acid and adenosine triphosphate (ATP), the energy provider. The amount of energy that can be produced anaerobically is a function of the amount of glycogen present—in all vertebrates about 0.5 percent of their muscle’s weight. Thus, the anaerobic energy reserves of a vertebrate are proportional to the size of the animal. If, for example, some predators had attacked a 100-ton dinosaur, normally torpid, the dinosaur would have been able to generate almost instantaneously, via anaerobic glycolysis, the energy of 3,000 humans at maximum oxidative metabolic energy production. This explains how many large species have managed to compete with their more active neighbours: the compensation for a low oxidative metabolic rate is glycolysis.Q. According to the author, glycogen is crucial to the process of anaerobic glycolysis because glycogen

It has long been known that the rate of oxidative metabolism (the process that uses oxygen to convert food into energy) in any animal has a profound effect on its living patterns. The high metabolic rate of small animals, for example, gives them sustained power and activity per unit of weight, but at the cost of requiring constant consumption of food and water. Very large animals, with their relatively low metabolic rates, can survive well on a sporadic food supply, but can generate little metabolic energy per gram of body weight. If only oxidative metabolic rate is considered, therefore, one might assume that smaller, more active, animals could prey on larger ones, at least if they attacked in groups. Perhaps they could if it were not for anaerobic glycolysis, the great equalizer. Anaerobic glycolysis is a process in which energy is produced, without oxygen, through the breakdown of muscle glycogen into lactic acid and adenosine triphosphate (ATP), the energy provider. The amount of energy that can be produced anaerobically is a function of the amount of glycogen present—in all vertebrates about 0.5 percent of their muscle’s weight. Thus, the anaerobic energy reserves of a vertebrate are proportional to the size of the animal. If, for example, some predators had attacked a 100-ton dinosaur, normally torpid, the dinosaur would have been able to generate almost instantaneously, via anaerobic glycolysis, the energy of 3,000 humans at maximum oxidative metabolic energy production. This explains how many large species have managed to compete with their more active neighbours: the compensation for a low oxidative metabolic rate is glycolysis.Q. The author suggests that, on the basis of energy production, a 100-ton dinosaur would have been markedly vulnerable to which of the following? Repeated attacks by a single smaller, more active adversary Sustained attack by numerous smaller, more active adversaries An attack by an individual adversary of similar size

Top Courses for UPSCView all

Top Courses for UPSC

During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer?
Question Description
During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer?.
Solutions for During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice During fatigue muscle contains:a)More ATP, less glycogenb)Less ATP, more lactic acidc)Less ATP, less lactic acidd)More ATP, more lactic acidCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice UPSC tests.
Explore Courses for UPSC exam

Top Courses for UPSC

Explore Courses
SaveJoin the Discussion on the App for FREE
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup