Last updated on October 14th, 2023 at 01:24 pm
A: Tooth decay is caused by the acid produced by the germs present in the plaque. The acid produced by the germs changes the sugar present in food particles into acid, which makes a hole in the enamel called a cavity.
Q: What happens when the cavity reaches the pulp?
A: When the cavity reaches the pulp, pain starts in the tooth, and this is called tooth decay.
Q: What are some consequences of tooth decay?
A: Tooth decay can result in bad breath, toothache, difficulty in chewing food, and indigestion.
Q: What is digestion?
A: Digestion is the process in which the food we eat is broken down into simple and soluble substances that are absorbed by the body.
Q: Which organs play a role in digestion?
A: Various organs play a role in digestion, including the mouth, esophagus, stomach, liver, pancreas, small intestine, large intestine, and anus.
Q: What happens in the mouth during digestion?
A: In the mouth, the teeth grind and crush the food, and the food mixes with saliva. Saliva breaks down the starch in the food into simple sugars and makes the food soft and easy to swallow.
Q: What happens in the stomach during digestion?
A: In the stomach, food is mixed with digestive juices, and the digestive juices break down the food into simple and soluble forms.
Q: What is the function of the liver and pancreas during digestion?
A: The liver produces bile, which helps in the digestion of fats in the small intestine, while the pancreas produces digestive juices that help to digest carbohydrates, fats, and proteins in the small intestine.
Q: What happens in the small intestine during digestion?
A: The small intestine is a long, tube-like organ that produces digestive juices, and the process of digestion is completed here. The small intestine is where the nutrients from food are absorbed into the body.
Q: What happens in the large intestine during digestion?
A: The large intestine receives the undigested food from the small intestine, and it absorbs water from it and forms semi-solid waste called feces.
Q: How is undigested waste eliminated from the body?
A: Undigested, semi-solid waste is eliminated from the body as stool through the anus.
Q: What are microbes?
Microbes are very small living organisms that are not visible to the naked eye and can only be seen through a microscope. They are present everywhere, and some are useful while others are harmful.
Q: What are the different types of microbes?
There are mainly four types of microbes: bacteria, viruses, fungi, and protozoa.
Q: What are bacteria?
Bacteria are single-celled microbes that can be of different shapes like rod-shaped, spherical, spiral, etc. Some bacteria can cause diseases like typhoid, tuberculosis, pneumonia, etc.
Q: What are viruses?
Viruses are smaller than bacteria and are also microbes that can cause diseases like measles, polio, common cold, flu, etc.
Q: What are fungi?
Fungi are single and multicellular microbes that grow on dead and decaying organic matter. Some fungi can cause diseases like ringworm and athlete’s foot, while others are used to make bread, cakes, buns, and curd from milk.
Q: What are protozoa?
Protozoa are single-celled microbes that can cause diseases like malaria, dysentery, etc.
Q: Are all microbes harmful?
No, not all microbes are harmful. Some microbes are useful and can be used for various purposes such as making bread, cakes, curd, and in decaying dead plants and animals.
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