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Fischer 's template or lock and key model
According to this model, the catalytic site of the enzyme has a proper conformation compatible to a specific substrate even in the absence of the substrate molecule. The catalytic site binds the substrate and catalyzes the reaction without any change in its own three dimensional conformation. It has become possible to explain the specificity of many enzymes for only one of the stereoisomers of the substrate by this model.
Substances which are insoluble in a membrane are carried across membrane with concentration gradient by means of a carrier molecule in a process termed as: a) Diffusion. b)
Q. What is the chemical equation of the aerobic cellular respiration? The chemical equation of the aerobic cellular respiration is given below: C 6 H 12 O 6 + 6 O 2 + 36 A
Pangenesis Theory (i) Charles Darwin propounded pangenesis theory. (ii) According to this theory every cell, of animal body produces many minute particles kn
Q. What are the main interspecific ecological interactions? The major harmonious interspecific ecological interactions are: protocooperation, commensalism and mutualism. The ma
How does the odor of flower petals help pollination? The purpose of the perfume is to attract a pollinator - insect, bat, bird or whatever. The reward for the pollinator is a m
In a neuron at rest, the membrane A. voltage will be less than zero. B. sodium conductance is greater than the membrane potassium conductance. C. voltage is less than the
How do populations of predators and prey vary in predatism? Whenever a predator population enhances at the first moment the prey population tends to decrease. At a second momen
What is the neuromuscular synapse? Neuromuscular synapse is the structure by which the neural impulse passes from the axon of a motor neuron to the muscle cell. This structure
Explain characteristics that make breastfeeding beneficial to the infant? We have listed some characteristics that make breastfeeding beneficial to the infant: • Mature milk
What are some evolutionary advantages of animals with complete digestive tube? The complete digestive tube permits animals to continuously feed themselves without waiting for r
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