Four bones of the skull contain paired air spaces called the paranasal sinuses that help to lighten the heavy load of the head.
<h3>What is Paranasal Sinus?</h3>
The paranasal sinuses are air-filled, bony spaces located next to the nasal passages in the face bones of the skull. They grow via slowly expanding pneumatized cells that erupt from the nasal cavity. The term is typically used in everyday speech to refer to the hollow, air-filled spaces in front of the human skull. There are four pairs of sinuses in humans. There are now eight sinuses in all. These four pairs of sinuses are together referred to as paranasal sinuses since they are all joined to the nasal cavity.
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A fiber-rich diet is best for intestine health, so the option that says fiber is correct. In the intestine, there is a diverse microbiota that performs a lot of cellular activities and facilitates the digestion process.
<h3>What is the intestine?</h3>
The intestine is an organ located below the stomach that is divided into two sections: the small intestine and the large intestine. The small intestine is responsible for complete digestion, while the large intestine is responsible for minute digestion and the for removal of fecal materials (undigested food). Fiber-rich foods, such as beans, should be consumed in order for the intestinal system to function properly.
Hence, fiber is the correct answer because it is beneficial to the intestine.
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The question is incomplete; here is the complete question.
1) the one that best maintains the intestinal health
a)fiber
b)starch
c)vitamins
d)fats
The answer is a. is like HIV in humans.
Answer:
Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O
Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O
Explanation:
Dehydration
In chemistry, a dehydration reaction is one that involves the loss of water. In organic synthesis, where an acid is often used as a catalyst, there are numerous examples of dehydration reactions: Conversion of alcohols to ethers: 2 R-OH → R-O-R + H2O Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O Conversion of amides to nitriles: RCONH2 → R-CN + H2O
Sources:
Klein Organic Chemistry. 2th edition
Mcmurry's Organic Chemistry. 9th edition.
