Biology Class 11 Chapter 11 Notes

• Our comprehensive Biology Class 11 Chapter 11 Notes will ensure you're fully prepared for your exams.
• Important Multiple Choice Questions for MDCAT Preparation from the chapter no 11 Bioenergetics class 11.
• List four features of leaf which show that it is able to carry out photosynthesis effectively.
• How does light affect opening of stomata?
• What causes the variation of osmotic potential in the guard cells?
• What is the difference between an action spectrum and absorption spectrum?
• What is the role of accessory pigments in light absorption?
• Difference between Cyclic and non-cyclic photophosphorylation.
• What is the net production of ATP during glycolysis?
• What is the main difference between photo-phosphorylation and oxidative phosphorylation?
• What is the location of ETC and chemiosmosis in photosynthesis and cellular respiration?
• How did the evolution of photosynthesis affect the metabolic pathway?
• How does absorption spectrum of chlorophyll a differ from that of chlorophyll b?
• Why are the carotenoids usually not obvious in the leaves? They can be seen in the leaves before leaf fall. Why?
• How is the formation of Vitamin A linked with eating of carrot?
• Summarize the role of water in photosynthesis.
• What are T.W. Engelmann and Melvin Calvin famous for?
• Differentiate between Chief and Accessory pigments.
• Differentiate between Chlorophyll a and chlorophyll b.
• What is stroma? Give its functions.
• Define the term bioenergetics.
• Differentiate between Photosynthesis and Respiration.
• Define Photosynthesis with equation. What is redox reaction; give example.
• Differentiate between aerobic and anaerobic respiration.
• Differentiate between lactic acid and alcoholic fermentation.
• Differentiate between reaction center and antenna complex.
• Sum up how much energy (as ATP) is made available to cell from a single glucose molecule by the operation of glycolysis, the formation of acetyl
• CoA the citric acid cycle, and the electron transport chain.
• What are the roles of the following in aerobic respiration: (a) NAD and FAD (b) Oxygen.
• How NADH and ATP can inhibit cellular respiration.
• Differentiate between photophosphorylation and oxidative phosphorylation.
• What is compensation point?
• Define chemiosmosis.
• What are cytochrome?
• What is meant by bacteriochlorophylls?
• What do you know about Rubisco?
• What is pay off phase of glycolysis.
• Differentiate between Photosystem I or photosystem II.
• How it was proved that the source of oxygen in photosynthesis is water?
• Name main parts of chlorophyll molecule; what is porphyrin ring.
• Differentiate between light dependent and light independent reaction.
• define the term bioenergetics. Ans: Bioenergetics: The quantitatively study of energy relationships/transformation/conversion in biological systems is called bioenergetics. • Biological energy transformations obey the law of thermodynamics. • Example: The chloroplasts of the plants capture light energy coming from the sun and convert it into chemical energy. This chemical energy is stored in sugar and then in other organic molecules and animals uses this energy as food. 
• what is compensation point? Ans: Compensation point: The light intensity at which the net gaseous exchange is zero is called compensation point. OR The point where there is no net gas exchange between leaves and atmosphere at dawn and dusk is called compensation point. • At this point rate of respiration becomes equal to rate of photosynthesis in plants. • At dawn (early morning) and dusk (early evening) when light intensity is low, the rate of photosynthesis and respiration are equal for a short time. This is because that the oxygen released from the photosynthesis is used in cellular respiration. Similarly the carbon dioxide released by respiration is used by respiration is used in photosynthetic process. At this moment there is no net gas exchange between the leaves and the environment.