90 percent
15%
no, salt is a solute not a solvent, so it will not move across the membrane
photosynthesis
tress
95%
about 75%
50% methanol will damage the membrane more than 25% acetone. we did the lab.
listening
i think u need to talk to a doctor and not asking advice on the internet
Ethanol creates pores in the cell membrane of the microbial cell by solubilizing the lipoproteins of the membrane. The activity of ethanol determines its concentration. If we 90 percent ethanol, the amount of ethanol molecules available to act upon the cell is more and it attacks the cell membrane from all sides. The dissolved lipoprotein forms a kind of layer around the cell, due to which the alcohol is unable to act further and cause damage to the cell. However, if we use 70 percent ethanol, the amount of ethanol molecules are few and it is not able to attack the cell from all sides. Thus, pores are created intermittently in the plasma membrane, the ethanol penetrates the cell and damages it completely. So, 70 percent ethanol is preferable to 90 percent when using microbial cultures.
Post-Deployment Software Support (PDSS) activities, which include correcting problems, providing new functions, and adapting the product to a modified environment, can represent a significant portion of a software system's lifecycle costs. Typically, it is estimated that PDSS activities account for around 60-80% of the total cost of a software system over its lifetime. This highlights the importance of planning for ongoing support and maintenance in the software development process.
plants only capture 1% of the radiant enery from the sun used in photosynthesis.