A logging company promises to plant five trees for every one of them that it cuts down. You may or may not have seen a forest affected by acid rain. The trees are stripped of leaves and branches and the whole forest appears to be like it's dying, which it is. Acid rain is caused by air pollution and has a very harmful effect on plant and animal life, any life really.
The correct answer is: B. the leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction.
The replication of DNA molecule or DNA synthesis is done by an enzyme- DNA polymerase that can work only in the 5' to 3' direction.
After helicase unzips the double-stranded DNA for replication, a replication fork is formed. The leading strand is synthesized in the same direction as the movement of the replication fork so it can occur continuously: the primase generates short strands of RNA-primers that bind to the single-stranded DNA to initiate DNA synthesis. On the other hand, the lagging strand is synthesized in the opposite direction comparing to the movement of replication fork and its replication is discontinuous, with short Okazaki fragments being formed and later linked together.
The most important differences between a transmission electron microscope and a scanning electron microscope are: Rather than the broad static beam used in TEM, the SEM beam is focused to a fine point and scans line by line over the sample surface in a rectangular raster pattern
<em>The polymer polymethyl methacrylate has several uses.
They are used in
Cell phone screens
The polymer plymethyl methacrylate is known for its transparent structure and is a thermoplastic. The monomer of polymethyl methacrylate is methyl methacrylate. Because it is transparent it is used widely in making shatter resistant glasses. It is used in LCD screens, sanitaryware etc, spectacle lenses etc.
<em>Polmethyl methacrylate is in fact a substitute for glass and it has proven to be an apt one too.