Home › Karnataka SSLC (Class 10) › Science › Life Processes › During vigorous exercise, the anaerobic breakdow…
During vigorous exercise, the anaerobic breakdown of pyruvate in our muscles produces
Aethanol and CO₂
Bcarbon dioxide and water
Clactic acid
Donly water
Answer & Solution
Correct answer: C. lactic acid
1. When oxygen supply is short during heavy exercise, muscle cells respire anaerobically.
2. Pyruvate is converted into **lactic acid**, which causes muscle cramps.
3. In yeast, anaerobic respiration instead gives ethanol and CO₂.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch6 'Life Processes', §6.3_
Related questions
By which process do living things release the energy stored in their food?The nitrogenous waste excreted in largest amount by the human kidney isThe green pigment that captures light energy for photosynthesis isThe human heart is made up ofMost of the absorption of digested food into the blood occurs in theThe enzyme in human saliva that begins the digestion of starch isThe basic filtration unit of the human kidney is theThe exchange of gases in leaves takes place through tiny pores called