The cell contains many organelles which have different functions like a tiny system
Simple diffusion is the concept of a substance moving from an area of high concentration to a lower concentration without energy input. Because the plasma membrane is made of lipids which are non-polar, this membrane readily allows non-polar substances to diffuse through easily. If a substance has a charge like that of an ion, it will be difficult for the ion to cross the plasma membrane through simple diffusion. The answer should be B.
It is like a barrier, or wall. It helps infection and bacteria stay out. It can also help you indicate whether you are getting infection in the inside of your body. if you're skin is inflamed, that is a sign of disease or infection.
I hope this helped you!
Brainliest answer is always appreciated!<span />
I think the answer to this is A
I’m mostly using my intuition here, but based on prior knowledge, (iii) would go with B.
This is because it is commonly known that neurons have long stoma (cell bodies) that help them connect with other neurons, as well as bushy ends, called dendrites, that connects the neurons with others. You can see that clearly in B.
Secondly, ii fits with A. Skin cells are lost constantly, as is well known, and the skin itself is comprised of a multitude of layers of skin cells. This means that skin cells are thin. In the picture A, there are thin structures that seem to be flaking off of a surface.
Thirdly, iv goes with D. The inner walls of intestines are lined with long, thin and microscopic structures called villi, which have the function of increasing surface area for absorption of nutrients. The picture shows, indeed, long, thin structures protruding from somewhere, which is an intestine.
Therefore, through process of elimination, i matches with C. I’m not that well versed with cells from the immune system. I’m guessing they’re white blood cells? I’m not sure.
