Answer:
DNA replication is the process by which DNA makes a copy of itself during cell division
1 by unzipping the double helicase or the double helix structure of the molecule
2. the separation of two single strand of DNA
The percentage of the replicated strands of the new to the old is 50-50
Answer:
Its primary role in red blood cells is to maintain levels of red blood cells with low levels of this compound are more suceptible to oxidative damage.
Explanation:
Pentose phosphte pathway helps in the formation of reducing equivalent named NADPH.
The so formed NADPH is used to maintain a normal cellular level of glutathione which act as antioxidant.
As glutathione is not mantained in its normal level, it ability to reduce to adverse effect of hydrogen peroxide is cut down.
As a result cell is more suceptible to oxidative damage.
Answer:
The Circulatory System is most important.
Explanation:
It is important because the circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Since the water concentration (also the water potential) is lower than the cell inside, the water will most likely flow from the cell out to the outside. This is because of osmosis, where the rule is water molecules will flow from a region of higher water potential to a region of lower water potential, through a semi permeable membrane (cell membrane).
When the cell looses water, depending its whether a animal or plant cell, if it's an animal cell, it'll shrink. If it's an plant cell, since there is the presence of the cell wall, the cell membrane will detach from the cell wall, and this phenomenon is called plasmolysis.
THE AMOUNT OF LIGNIN PRESENT in a cell is responsible for this. Once a plant cell stops enlarging, the primary cell wall is reinforced by a secondary cell wall. The secondary cell wall is made up majorly of lignin, which serves a structural function in plants. It provides a skeletal function and ultimately determined the shape of the cell.
