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Mechanism of DNA Replication
It is a complex process and involves the participation of over a dozen enzymes and other protein factors. The intertwined DNA starts separating from a particular point and this is known as the origin of replication. The second step is that the two strands of DNA separate, before each serv..
Orientation Barrier
As noted earlier, the rate of reaction also depends on p, the fraction of collisions that occur with proper orientation. This factor is independent of temperature. Why proper orientation of the reactant molecule is important can be understood from the figure. fig 6.13 - Importance of mole..
As noted earlier, the rate of reaction also depends on p, the fraction of collisions that occur with proper orientation. This factor is independent of temperature. Why proper orientation of the reactant molecule is important can be understood from the figure. fig 6.13 - Importance of mole..Plant Water Relations Summary
. Turgidity of guard cells is regulated by K + fluxes between them and the surrounding epidermal cells. Transpiration is also influenced by environmental factors such as light, temperature, availability of soil water and atmospheric humidity. Transpiration facilitates the moveme..
Points to Remember
>When the transpiration pull is exerted, a negative pressure or tension is generated in the xylem. About 98% water absorbed by land plants evaporates from aerial plants parts and diffuses into atmosphere. The opening and closing of stomata is controlled by the size and shape of guard cells resultin..
Summary
The mechanism of transmission of characters from the parental generation to the offspring is called heredity. The differences seen among members of a species and their offspring are described as variations. Genetics is the study of heredity, variations and the environmental factors..
Gene Regulation in Eukaryotes
In eukaryotes, the genes that code for the enzymes needed to catalyse the various steps of a particular metabolic pathway may not be adjacent or even be in different chromosomes. However, these genes are regulated by operon model as in bacteria. Both the inducible and the repressible systems of the..
Gene Regulation in Eukaryotes
Gene Regulation in Eukaryotes - In eukaryotes, the genes that code for the enzymes needed to catalyse the various steps of a particular metabolic pathway may not be adjacent or even be in different chromosomes. However, these genes are regulated by operon model as in bacteria. Both the inducible an..
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