Advertisements
Advertisements
प्रश्न
It is known that red muscle fibres in animals can work for longer periods of time continuously. How is this possible?
Advertisements
उत्तर
The red muscle fibres are thinner than the white muscle fibres. Their functionality can be extended for a longer period of time without becoming fatigued. They can function continuously for a long period of time due to the following factors:
When myoglobin is abundant, oxygen is readily available.
Their energy comes from aerobic respiration. As a result, they do not produce lactic acid in their muscles.
This means there is a large amount of stored ATP in these muscles because there are many mitochondria. Therefore, these muscles are able to work for a longer period of time.
APPEARS IN
संबंधित प्रश्न
Name the most common respiratory substrate.
What happens to the energy liberated during respiration?
Glycolysis is a process ___________.
Do the plants respire all day and all night or only at night?
Name the following:
Energy currency of cell.
Name the following:
Oxidative breakdown of carbohydrates to release energy.
Name the following:
Aerobic respiration requires_________ .
Why is it usually difficult to demonstrate respiration in green plants?
How is tilling of the soil useful for the crops growing in it?
Fill in the blank :
_________ are the openings found on older stems.
Fill in the blank :
Glycolysis occurs in the _______of the cells.
Fill in the blank:
_____________ is a respiratory substrate
Fill in the blank:
_____________ is a chemical which absorbs oxygen of the air.
How do the following structures help in respiration in plants?
Stomata _____________
How do the following structures help in respiration in plants?
Root hairs ____________
The following diagram refers to an apparatus which is used to demonstrate a physiological process:
What is the purpose of keeping boiled peas soaked in a disinfectant in test tube Y?
What do you understand by respiration?
Which gas present in the air is essential for aerobic respiration?
Observe the figure carefully and answer the following questions.
- In which jar, will the amount of CO2 be the highest and why?
- In which jar, will the amount of CO2 be the lowest and why?
A food stall owner was preparing dough for making bhaturas. He added a pinch of yeast and sugar to the dough and left it in a warm place. After few hours, the dough had risen. There was a sour smell too.
Why did the dough rise?
Mitochondria are called powerhouses of the cell. Which of the following observations support this statement?
Explain the term “Energy Currency”. Which substance acts as energy currency in plants and animals?
If a person is feeling dizzy, glucose or fruit juice is given immediately but not a cheese sandwich Explain.
Respiration requires O2. How did the first cells on the earth manage to survive in an atmosphere that lacked O2?
RuBP carboxylase, PEP carboxylase, Pyruvate dehydrogenase, ATPase, cytochrome oxidase, Hexokinase, Lactate dehydrogenase.
Select/choose enzymes from the list above which are involved in
- Photosynthesis
- Respiration
- Both in photosynthesis and respiration
How does a tree trunk exchange gases with the environment although it lacks stomata?
