Photosynthesis is a process in which light dependent reactions is undertaken and can be studied elaborately. Photosynthesis is a process from which light energy transfers electrons from water to carbon hydroxide which produces carbohydrates. Water, Light intensity and temperature have huge hand in influencing the rate of photosynthesis.
1. Light energy is absorbed by electrons in the pigments and water molecules are split into Hydrogen atoms.
2. High Energy electrons move down the electron transport chain to pump the Hydrogen ions.
3. NADP+ molecules reacts with higher energy electrons along with H+ to form NADPH.
4. The H+ ions pass through ATP synthase causing the base to rotate and form ATP (Adenosine Triphosphate)
The investigators could distinguish human hair from animal hair by the patter of pigmentation and by the medullary index.
The pigmentation in human hairs is denser toward the cuticle, whereas in animal hair is denser toward the medulla. Human hairs are usually one colour throughout the whole length, while animal hairs may change colour suddenly.
The medulla in humans is thinner than in animals: the medullary index for human hairs is 0.33 or less; the medullary index for animal hairs is 0.5 or more.
Answer: C
Explanation:
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Catalysts provide a new reaction pathway in which a lower A.E. is offered. A catalyst increases the rate of a reaction by lowering the activation energy so that more reactant molecules collide with enough energy to surmount the smaller energy barrier.
