Answer: The tension is relieved by an enzyme named topoisomerase
Explanation:
As replication starts DNA polymerase needs to move forward of double strand DNA, this creates a lot of tension in the DNA molecule. The tension is relieved by the action of an enzyme named topoisomerase. The stress relieve is needed for the progresion of the replication mechanism.
There are to types of topoisomerases:
a) Topoisomerase I
b) Topoisomerase II
Topoisomerase I underwinds the DNA double helix by making a single cut in one of the strands of the DNA molecule. Once the cut is made, the DNA unwinds and torsional stress is released. Finally the DNA strand , that was cut is ligated ( see attached image)
Topoisomerase II acts when torsional stress is made because two DNA strands cross each other (superhelical stress). Topoisomerase II cuts both strands of a DNA molecule. After this cut is made the DNA unwinds and torsiona stress is relieved ). Finally both DNA strands are ligated ) see attached image)
Topoisomerases II enzymes require ATP hydrolysis to perform the cut of both of the DNA strands.
Answer:
motor cortex association
Explanation:
The motor cortex is one of the parts of the telencephalon, which in turn is part of the brain. Its main function is to favor movement. Then through it we generate, maintain and finalize the movements.
Thanks to the motor cortex we can make voluntary movements consciously. This brain region is located in the frontal lobe, just in front of Rolando's fissure and somatosensory region.
If the part of the brain where the motor cortex is located is injured, movement of some part of the body may be lost or limited. For this reason, if Marta lost her arm movements after a brain injury caused by an accident, we can conclude that this injury injured the motor cortex.
Answer:
soil erosion has been a major cause of soil degradation in north carolina for many years .it affects water quality physically,chemically and biological.damage from sediment is expensive,both economically and environmentally.
Explanation:
because the environmental damage from sediment is often cumulative,the ultimate affects and the consequences of off-site sedimentation can be severe,both for people immediately affected and those who must cope with subsequent problems.
I think the type of epithelial tissue is the simple columnar epithelium.
The Vermiform appendix is a blind-ended tube connected to the cecum, from which it develops in the embryo. The cecum is a pouch like structure of the colon, located at the junction of the small and the large intestines. A simple columnar epithelium is a columnar epithelium that is uni layered. It lines most organs in human of the digestive tract including the stomach, small intestine and large intestines.
Yo compré unas y se me murieron rápido ya que no agarraban nada lol