The cell has to use active transport when it's trying to transport material against the concentration gradient. (from low to high concentration) Or, if a molecule is too big to diffuse through the cell membrane, it must be moved through using a carrier protein.
Hope that helped you.
Electron cloud modle should be the answer
A word pharse that read the same backward as forward . it's about genetic table
Prophase I,
This is the only time this will happen, there will be synapsis of the homologous chromosomes, and then they will exchange genetic material.
Answer:
False
Explanation:
Chief cells usually secrete pepsinogen, but the product does not related is to acidity.therefore, Whenever
HCl secreted by the parietal cells activate pepsinogen, the pepsinogen is converted into pepsin, and pepsin is an enzyme that acts on proteins.
NOTE:
The gastric chief cell is one of the cells in our stomach that brings about the release of pepsinogen and chymosin. Pepsinogen is activated into the body's digestive enzyme pepsin and the pepsin will have contact with acid that is produced by gastric parietal cells.
Pepsinogen is substance that is secreted into gastric juice from both mucous cells and chief cells. After secretion pepsinogen is activated into the active protease pepsin by the stomach acid.the protease pepsin helps the stomach's ability to initiate digestion of proteins.
