yes, cell organelles can be seen with a microscope
Pepsinogen, an inactive zymogen, is secreted into gastric juice from both mucous cells and chief cells. Once secreted, pepsinogen is activated by stomach acid into the active protease pepsin, which is largely responsible for the stomach's ability to initiate digestion of proteins.
Answer: The second one so uea
Answer: biotic and abiotic factors are the environmental conditions that the organisms have to face to live in a specific environment
Explanation:
