The answer is cancer!! i just had the quiz and had that one correct.
B. enamel
C. pulp
D. cementum
The enamel, which is the hard, outer layer of our teeth, bears the force of chewing. It serves as a barrier against decay, and withstands the force and pressure exerted during the chewing process.
The part of the tooth that bears the force of chewing is the enamel. Enamel is the hard, outer surface layer of our teeth that serves as a protective barrier against decay. Though it is a very hard substance, enamel can be worn down with constant exposure to acids and certain foods. When we chew, our teeth work to breakdown food into smaller pieces, this action is borne primarily by the enamel. It is the enamel that withstands the force and pressure exerted during the chewing process and protects the interior parts of the tooth (dentin, pulp, cementum).
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The enamel, which is the hardest and most highly mineralized part of the human body, handles the force of chewing. It protects the inner, softer areas of the tooth from damage due to chewing and biting. It's crucial to look after your enamel to prevent problems like cavities and other dental issues.
The part of the tooth that bears the force of chewing is the enamel. The enamel is the hardest and most highly mineralized substance in the human body. It forms the outermost layer of the tooth and is responsible for protecting the softer tissues inside the tooth from the impact of biting and chewing. The enamel's main function is to withstand the great forces exerted when we chew and grind food, and as such, it needs to be remarkably strong and durable.
In contrast, the crown refers to the visible part of the tooth, the pulp contains the tooth's nerves and blood vessels, and the cementum covers the root of the tooth and helps anchor the tooth to the jawbone.
It is essential to take care of your enamel by practising proper oral hygiene, such as brushing and flossing regularly, to prevent wear and tear, dental cavities, and other dental issues that can weaken the enamel.
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b. they control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food.
c. they improve the muscular strength of the organs involved in digestion.
The correct answer is B. They control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food.
Explanation:
In biology, sphincters are a type of muscle that can regulate the passage of substances. In the digestive system, sphincters can be found mainly in the upper and lower zone of the stomach, between the small and large intestine and at the anus. In all cases, the sphincters regulate the amount of digested food or other substances that pass through the organs and also prevents the substances that have already passed to a new organ or zone of the digestive system can go backward.
Due to this sphincters are essential for regulating the movement of food and other substances to be correctly digested and to pass through different organs. According to this, the key function of these muscles is "control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food".
c. gallbladder
b. appendix
d. rectum
Answer:
Phloem
Explanation:
Phloem is the vascular tissue responsible for transporting organic nutrients around the plant body, carries dissolved sugars from the leaves (their site of production) or storage sites to other parts of the plant that require nutrients.
The phloem, part of a plant's vascular system, is the structure that transports organic molecules like sucrose, which is a product of photosynthesis, from the leaf to other parts of the plant. This process involves the active transport of these molecules against a concentration gradient with the aid of ATP and a carrier protein.
The structure used to transport organic molecules from the leaf to other parts of the plant is called the phloem which is part of the plant's vascular system. Products of photosynthesis, known as photosynthates, such as sucrose, are produced in the leaf's mesophyll cells. They are then translocated through this phloem to other parts of the plant where they are either used or stored. This is achieved through cytoplasmic channels called plasmodesmata which connect the mesophyll cells to phloem sieve-tube elements (STEs) in the vascular bundles. The photosynthates, including sucrose, are actively transported against its concentration gradient (which requires ATP) into the phloem cells. This is done by using the electrochemical potential of the proton gradient linked with a carrier protein referred to as the sucrose-H+ symporter.
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