Q. What is the respiratory surface?
Solution : The respiratory surface is the area where gaseous exchange occurs.
Life Processes
Q. What are the stages of respiration?
Solution : The stages of respiration are as follows: External respiration or exchange of gases: Gaseous exchange, also known as external respiration, is the movement of gases between the environment and the body.Internal respiration: In the tissues within an organism’s cells, biochemical reactions called respiration to take place to break down the substrate and release …
Q. Give the general equation for respiration?
Solution: C6H12O6 + 6O2 → 6CO2 + 6H2O Glucose Oxygen Carbon dioxide water
Q. Name a few respiratory substrates. Which of them is most commonly used?
Solution : Some of the respiratory substrates involve proteins, fats, and carbohydrates. The most popular one of them is the carbohydrate glucose.
Q. How does food yield energy?
Solution : Food is broken energy in the form of ATP.
Q. What is a respiratory substrate?
Solution: The substance used by the cell to derive energy is called a respiratory substrate.
Q. Why do organisms need food?
Solution : Food is necessary for an organism to have the energy to perform vital functions.
Q. What would happen if the experiment did not keep the seeds moist?
Solution Water is necessary for seed growth. The seeds would dry out and their rate of respiration would decrease if there was no water content or moisture in the seeds. It’s the same as when you plant a new seedling and when you add water and manure to fertilisers to carry out respiration.
Q. Name two types of muscles which help in respiration?
Solution Name two types of muscles which help in respiration a) Intercostal muscles and b) diaphragm muscles are responsible for respiration. These intercostal muscles closest to the sternum contract during inhalation and raise the rib cage upward and outward to create more space for the lungs. The diaphragm descends toward the stomach as it contracts. …
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Write two different ways in which glucose is oxidised to provide energy in human body. Write the products formed in each case. (Delhi 2019)
Solution : Glucose The most important source of energy for all living things is glucose.The most important carbohydrate that comes from the food we eat is glucose. To give the body energy, glucose is oxidised.The different processes by which glucose is broken down are mentioned below. Aerobic Respiration Aerobic respiration occurs only in the presence …