<span>The cells of our organs change size as a result of physiological changes of situations like aging and diseases which come with it. Diseases put an extra workload on our body’s tissues and organs that cause the cell to get larger. Many cells grow larger as they undergo repair after inflammation and infection. Cancerous cells get larger because they are working hard dividing and increasing uncontrollably. </span>
Selectively permeable (or semi permeable) means where for example a membrane can choose what material can pass through while others cannot. They control the in and out of materials.
This is because the membrane has tiny spaces, where only smaller molecules can pass through, other larger ones cannot.
Answer:
B. The rating number means it will protect you that many times longer than without sunscreen
Explanation:
The sun protection factor is a comparison between the length of time it will take for a skin that has no sunscreen to begin reddening compared to a skin with sunscreen applied. Therefore, the ratings is an indication of the length of time a person will be protected from ultraviolet rays than when the individual has no sunscreen applied.
While higher SPF's are believed to offer more protection against UV rays, the added protection is usually just a negligible amount. They are very important for the skin and protect the body against diseases like cancer.
