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Contrast mechanical digestion with chemical digestion and give an example of each?
Wiki User
∙ 15y ago
Physical digestion is, basically, "mashing." The food is ground up (by the teeth), mashed into a paste (by the stomach), and so forth. It's mixed with other foods in the process, but no new molecules are produced.
Chemical digestion involves chemical reactions, and new molecules ARE produced. The action of enzymes in saliva, gastric juices, and so forth is a form of chemical digestion.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoRemember that digestion starts in the mouth - the mechanical part of it starts with mastication, followed by the muscular action that moves food through the digestive tract. Chemical digestion starts with salivary enzymes in the mouth, followed by the breakdown of food by the acids in the stomach and various other chemical processes. Mechanical - breaking food into smaller pieces Chemical - breaking chemical bonds within the food to release the nutrients it contains
Wiki User
∙ 8y agoMechanical digestion happens...well...mechanically. The mouth chewing food or the stomach and other associated organs squeezing and churning food are some examples. Chemical digestion happens with the presence of enzymes. Enzymes breakdown substances into smaller units. The mouth uses chemical digestion as well as mechanical digestion because it secretes amylase (an enzyme targeting carbohydrates) and has a voluntary chewing motion. The stomach uses chemical digestion as well as mechanical digestion because it secretes enzymes like pepsinogen and gastric lipase and churns and squeezes the food introduced from the esophagus.
Wiki User
∙ 8y agoAs one example, mechanical includes mastication--chewing. As one example, saliva is the beginning chemical process to break down foods. But there are other chemical processes involved, such as bile from the gallbladder.
Wiki User
∙ 12y agomechanical digestion physically breaks down food the other uses acids and chemicals your stomach produces to breack down food.
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Is formation of chyme by the stomach an example of mechanical digestion?
No, it is chemical digestion.
How are chemical and physical digestion alike?
Physical Processes:Ingestion is the placing of food into the mouth. Mechanical digestion is the mastication of food and the churning of the stomach. Egestion is the removal of undigested materials from the digestive tract through defecation. Underlying all these processes are the muscle movements involved in swallowing and peristalsis.Chemical Processes:The digestion of starch to maltose by salivary amylase, the actions of all digestive enzymes, the emulsification of lipids by bile salts, the effects of the hydrochloric acid secreted by parietal cells of the stomach lining etc.Physical digestion includes things that involve mechanical motion, like chewing.Chemical digestion occurs when a chemical reaction causes the breakdown of food molecules. This occurs in several places, such as with the enzymes in your saliva and in your intestines.Chemical digestion breaks down food into smaller particles to be used as nutrients for the rest of the body. Mechanical digestion breaks down food into small pieces that are churned in the stomach and the intestines to be used as nutrients for the rest of the body, but some food may end up as waste.In me chemical digestion, foods are physically broken down into smaller pieces. In chemical digestion, chemicals produced by the body break foods into their smaller chemical building blocks.Chemical vs Mechanical DigestionThe digestive system of human body is made of vacuous organs connected with long and twisted tube from the mouth to the anus. This is also interlinked with various other organs that help the body to break the food particles and helps to absorb the nutrients. Organs like mouth, esophagus, stomach, small intestine, large intestine and anus play an important part in the process of digestion.When we consume food, the body needs to break down the food into smaller molecules of nutrients for the system to absorb the nutrients into blood streams. This would be carried to all the cells present throughout the body. Digestion process could be divided into mechanical and chemical digestion.Mechanical digestion is a process that begins the moment the food particles reach the mouth. The process of taking the food from mouth to the body is called ingestion. The teeth initiates the mechanical digestion by grinding the food and this process is also called as masticating.When initiating the chemical digestion process, the saliva secreted helps in softening the food into semi-solid lump. Salivary amylase enzyme helps in digesting the carbohydrates and mucus. This way the food particles are made finer for swallowing and chemical breakdown in the digestive track. The food thus made into semi solid lump is then pushed through the throat and esophagus, a hollow tube that connects throat and stomach.On reaching the stomach the food goes through a series of chemical and mechanical treatment. Inside the stomach mechanical digestion called peristaltic contractions helps to churn the food bolus. The chemical process mixes the bolus with digestive juices released by the stomach lining cells. The food particles go through hours of digestive process passing through various stages of chemical digestion.The processed food is moved into rectum by small intestine. Then the food gets fermented inside large intestine by the gut bacteria. This aids in digesting the unfinished projects of small intestine.There are four important hormones that help in regulating the digestion process.Gastrin '" gastric glands stimulates pepsinogen and hydrochloric acid on arrival of food inside stomach.Secretin '" this signals secretion of sodium bicarbonate in pancreas. Secretin helps in controlling the acidity of the chime.Cholecystokinin '" this helps in secretion of digestive enzymes in pancreas. This also aids in emptying the bile in gallbladder. Cholecystokinin is produced when the digestion process needs to handle fats from chime.Gastric inhibitory peptide '" this helps in decreasing the churning process. This also helps in producing insulin secretion.Even though the mechanical and chemical digestion processes are very important for the human digestive process, chemical digestion is considered more important. This is due to the complex procedure involved in Chemical digestion.Summary:1. Mechanical digestion refers to the digestion process that breaks the food into smaller particles.2. Chemical digestion is the process where acids, bases and enzymes released into the digestive track responds to semi-solid food lumps.3. Chemical digestion is more important than mechanical digestion as this is how we get our energy.Mechanical digestion is the actual chewing and breaking down of food, and chemical digestion is when one substance is turned into anotherMechanical digestion occurs in the mouth, when the teeth (and tongue) break down food into smaller pieces.Chemical digestion also starts in the mouth, when digestive enzymes begin to break down the food and continues in the stomach where gastric juices continue the job of breaking the food down.Mechanical digestion is when food is broken down in the mouth so you can think of your mouth being mechanical..... Chemical digestion is when you food is broken down by chemical enzymes so you can think I'd chemical as like erosionPhysical Processes:Ingestion is the placing of food into the mouth. Mechanical digestion is the mastication of food and the churning of the stomach. Egestion is the removal of undigested materials from the digestive tract through defecation. Underlying all these processes are the muscle movements involved in swallowing and peristalsis.Chemical Processes:The digestion of starch to maltose by salivary amylase, the actions of all digestive enzymes, the emulsification of lipids by bile salts, the effects of the hydrochloric acid secreted by parietal cells of the stomach lining etc.LInk:What_is_the_difference_between_chemical_and_physical_digestionmechanical digestion is when you chew up your food. I thinkchemical digestion is when chemical break down food.Mechanical => ChewingChemical => HCl in Stomach
Enzyme associated with the mouth?
The primary enzyme in human saliva is amylase and serves to break down complex starches like the carbohydrates that would be found in a cracker for example, into more simple sugars to begin the process of chemical digestion.
Root pry is an example of this type of weathering?
Physical weathering is a term used in science that refers to the geological process of rocks breaking apart without changing their chemical composition.
What type of organization is sequence extremely important?
Example and explanation chronological cause and effect compare and contrast
Is formation of chyme by the stomach an example of mechanical digestion?
No, it is chemical digestion.
Is emulsification an example of mechanical digestion?
Mechanical digesting is this that involve physical breakdown or movement of food not chemical. Actions like chewing and swallowing would be mechanical.
Chewing is an example of?
a. absorptionb. chemical digestionc. eliminationd. mechanical digestionThe answer is: d. mechanical digestion
Type of digestion that involves using enzymes and other body acid to break food down into smaller molecules?
Mechanical digestion is the physical mashing and pulling apart of food like chewing your food. Chemical digestion uses acids and enzymes to chemically break down the food until it is small enough to be absorbed through the wall of the small intestine.
Is teeth grinding food a mechanical digestion or a chemical digestion?
Mechanical, of course.. If you experience your saliva deteriorating your food any time soon, let me know. Actually, saliva is there to help break down carbohydrates. The teeth in the mouth also digest food mechanically. In other words, the mouth uses both chemical and mechanical digestion to break down food.
Chewing food in the mouth is an example of?
Mechanical digestion.
Churning of the stomach is an example of what type of digestion?
mechanical
Which organ does mechanical and chemical digestion begin?
mechanical digestion is when you are breaking down food almost by hand. you're breaking it down manually. an example of mechanical digestion is chewing. it begins in your mouth and ends once you swallow.
What part of the digestive system do the mechanical digestion?
Mechanical digestion is the breakdown of food through chewing, mixing, or churning. Mechanical digestion occurs in the mouth and stomach. The food is physically torn apart through the teeth, tongue, stomach contractions, etc. This is counterpart to chemical digestion, where acids and other enzymes chemically pull apart the food.
What does mechanical digestion mean?
Mechanical digestion happens in only in 2 of your digestion organs mouth and stomach. Mechanical digestion is the mechanical way you digest your food for example when your eating your teeth are mechanical digesting your food by making your food smaller by chewing on it your not changing your food in any way that only happens chemical digestion is happening.Another example of mechanical digestion is in your stomach when the food is bong to the stomach your stomach is squeezing mushing up the food to make it smaller (your stomach is made out of 3 lairs of mussel's which squeeze in all 3 different direction's).
Is stomach mechanical or chemical digestion?
Both To further clarify: Mechanical: The stomach is a muscular sack. It contracts and relaxes, sloshing and squeezing the food inside to break it down and to ease the job of the 'chemicals'. Another example is how many birds swallow stones to enhance the crushing and churning in their stomachs. Chemical: The conditions and enzymes within the stomach contribute to chemical digestion. Hydrochloric acid, for example, creates an acidic environment that denatures proteins; whilst enzymes such as pepsin react at a molecular level with peptides to cleave them apart.
What is digesting food an example of?
Digesting food is a very good example of a chemical change. However, it is also a common example of a physical change with the body.
