1.Which function, other than making the medium acidic, is performed by HCL in the stomach?
2. What regulates the release of food from the stomach to the small intestine?
3. Why is an intermediate compound produced during night in desert plants? How is it changed to food during day?
4. Why is mucus needed during the process of digestion in the stomach?
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1).HCl does the work of softening the food particles.
2). Sphincter muscle
3). In deserts, the climate is very hot and the amount of rainfall is very low. If desert plants take CO2 during day, lots of water will be lost. To prevent the water loss some of the desert plants take CO2 during night.
These plants undergo a different type of photosynthesis, known as crassulacean acid metabolism, or CAM. The cells of these plants contain enzymes that are able to metabolize carbon dioxide at night, so the plant can close the stomata during daylight hours and open them when temperatures are cooler and evaporation is reduced. Carbon dioxide is stored in organic acids at night and released within the plant during the day so the normal photosynthetic pathways can synthesize sugars using sunlight.
4). Mucus does not directly help in digestion. It does the job of protecting the muscles cells on the inner layers of the stomach. They prevent the cell from getting damaged by HCl . But even they can get damaged by too much acidic content in stomach and their destruction let's the cell come in direct contact with HCl and this causes acidity.
Hope this helps you in your studies . Have a good day,
Regards,
Louis Aaron.☺
2). Sphincter muscle
3). In deserts, the climate is very hot and the amount of rainfall is very low. If desert plants take CO2 during day, lots of water will be lost. To prevent the water loss some of the desert plants take CO2 during night.
These plants undergo a different type of photosynthesis, known as crassulacean acid metabolism, or CAM. The cells of these plants contain enzymes that are able to metabolize carbon dioxide at night, so the plant can close the stomata during daylight hours and open them when temperatures are cooler and evaporation is reduced. Carbon dioxide is stored in organic acids at night and released within the plant during the day so the normal photosynthetic pathways can synthesize sugars using sunlight.
4). Mucus does not directly help in digestion. It does the job of protecting the muscles cells on the inner layers of the stomach. They prevent the cell from getting damaged by HCl . But even they can get damaged by too much acidic content in stomach and their destruction let's the cell come in direct contact with HCl and this causes acidity.
Hope this helps you in your studies . Have a good day,
Regards,
Louis Aaron.☺
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