Answer will be the first, can be created by microbial action or burned directly as wood or dung
It is true, it does release hydrogen ions in a water base.
In response to c. acid in duodenum, the hormone secretin is released by endocrine cells in the duodenal mucosa.
<h3>What releases secretin in the duodenum?</h3>
Secretin is a polypeptide that contains 27 amino acids. In response to H+ and fatty acids in the lumen, S cells in the duodenum produce secretin. Particularly, a pH of less than 4.5 indicates the entry of stomach contents, which starts the secretin release.
Secretin, a digestive hormone that controls gastric acid secretion and pH levels in the duodenum, is released by the wall of the upper portion of the small intestine (the duodenum).
A pancreatic fluid that is high in bicarbonate is secreted when secretin is present (45). By interacting with pancreatic ductal cells, secretin enters the bloodstream or intestinal lumen and increases the production of bicarbonate, which lowers the pH of the gastric chyme as it enters the small intestine.
Learn more about secretin here:
brainly.com/question/9225171
#SPJ4
Producers provide primary consumers with the chemical energy they need.
Explanation:
- Producers lie at the first trophic level of the food chain.
- The producers are the green plant which are able to convert the light energy of the sun into chemical energy.
- Thus, they are the key in directing the energy from the ultimate source to the food chain.
- Primary consumers comprise of the herbivore or omnivores which feed on the plants and plant product.
- The only way they could get energy is from the plant directly or indirectly as they cannot photosynthesize.
- Thus. we can conclude that producers provide primary consumers with the chemical energy they need.
true It is a single instance that includes growth,cell wall synthesis and cell expansion
