B.Carbohydrates are made up chains attached to a glycerol
Earth and Mercury are relative to each other
Diffusion is the process in which movement of molecules take place from their higher concentration to their lower concentration. It is an important biological process in any living organism. Two of these are:
1. It allows the exchange of molecules within the organism and with the environment. For example: gaseous exchange in the alveoli of the lungs.
2. It also regulates water content in the body.
The T lymphocytes capable of killing invading cellular organisms such as bacteria, protists, or fungi are cytotoxic T cells also known as CD8+ cells. These cells are capable of recognizing whether a cell has a major histocompatibility complex I (MHC I) surface protein or not. Those with absent MHC I surface protein will be killed by the cytotoxic T cells. Those with the MHC I surface protein expressing an invading antigen will also be killed by cytotoxic T cells. Those with the MHC I surface protein without an antigen will be spared by the cytotoxic T cell.
Plant cells
1 cell wall
2 chloroplast
3 vacoule
animal cells
1 mitochondria
2 food vacoule
