Class: X Subject: Biology Topic: Life processes No. of
... in the saliva of humans and some other mammals, where it begins the chemical process of digestion. Foods that contain large amounts of starch but little sugar, such as rice and potatoes, may acquire a slightly sweet taste as they are chewed because amylase degrades some of their starch into sugar. ...
... in the saliva of humans and some other mammals, where it begins the chemical process of digestion. Foods that contain large amounts of starch but little sugar, such as rice and potatoes, may acquire a slightly sweet taste as they are chewed because amylase degrades some of their starch into sugar. ...
No. 4
... Every cell in the body requires a constant source of energy in order to perform its particular functions— these functions are contraction, secretion, synthesis, or any other. Ingested food provides the basic materials from which this energy is produced and new molecules are synthesized. Most food, h ...
... Every cell in the body requires a constant source of energy in order to perform its particular functions— these functions are contraction, secretion, synthesis, or any other. Ingested food provides the basic materials from which this energy is produced and new molecules are synthesized. Most food, h ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... (a) Opponents argued that the weight loss was almost entirely due to water loss and would be regained very soonafter a normal diet was resumed. What is the biochemical basis for this argument? (b) A number of people on this diet died. What are some of the dangers inherent in the diet and how can the ...
... (a) Opponents argued that the weight loss was almost entirely due to water loss and would be regained very soonafter a normal diet was resumed. What is the biochemical basis for this argument? (b) A number of people on this diet died. What are some of the dangers inherent in the diet and how can the ...
Chapter 2 - SCHOOLinSITES
... – Substrate binds to enzyme at active site – Enzymes act on substrates to reduce energy needed to make product – Substrate is changed – Enzyme separates from products and can form an association with another substrate – Enzyme, as a catalyst is not used up in the reaction – Increases reaction rate ...
... – Substrate binds to enzyme at active site – Enzymes act on substrates to reduce energy needed to make product – Substrate is changed – Enzyme separates from products and can form an association with another substrate – Enzyme, as a catalyst is not used up in the reaction – Increases reaction rate ...
Chapter 3 Review Questions
... People who are lactose intolerant cannot digest the sugar known as lactose. Lactose is a disaccharide found in milk and products derived from milk. The lactose intolerant person cannot breakdown lactose into two monosaccharides because they do not have the enzyme lactase. Lactose passes through thei ...
... People who are lactose intolerant cannot digest the sugar known as lactose. Lactose is a disaccharide found in milk and products derived from milk. The lactose intolerant person cannot breakdown lactose into two monosaccharides because they do not have the enzyme lactase. Lactose passes through thei ...
Biological Molecules - Parkland Secondary School
... Furthermore, all of the polymers listed above can break down into their monomers through a hydrolysis reaction. ...
... Furthermore, all of the polymers listed above can break down into their monomers through a hydrolysis reaction. ...
Obtaining Food
... as that website is available. Images lacking photo credits are mine and, as long as you are engaged in non-profit educational missions, you have my permission to use my images and slides in your teaching. However, please notice that some of the images in these slides have an associated URL photo cre ...
... as that website is available. Images lacking photo credits are mine and, as long as you are engaged in non-profit educational missions, you have my permission to use my images and slides in your teaching. However, please notice that some of the images in these slides have an associated URL photo cre ...
Proteins Multiple choice Proteins can be classified as Polyesters
... 3. Explain what is meant by the term essential amino acid ...
... 3. Explain what is meant by the term essential amino acid ...
The effect of pH on the digestion of proteins in vitro by pepsin
... at pHs near z and that, although some proteolysis occurred at pH 4, there was no indication of a second peak of proteolytic activity at pH 3-5-4. There is general agreement that pepsin causes optimal proteolysis of protein substrates at pHs near 2, but it has also been claimed (cf. Taylor, 1959a) th ...
... at pHs near z and that, although some proteolysis occurred at pH 4, there was no indication of a second peak of proteolytic activity at pH 3-5-4. There is general agreement that pepsin causes optimal proteolysis of protein substrates at pHs near 2, but it has also been claimed (cf. Taylor, 1959a) th ...
Helthy diet * myths and reality - Visegrad University Association
... women need 2000 calories, and men 2700 calories. Heavy manual labor may require not less than 4000 calories. Expended all this energy we get from food. ...
... women need 2000 calories, and men 2700 calories. Heavy manual labor may require not less than 4000 calories. Expended all this energy we get from food. ...
Cellular Respiration - Chapter 8 (new book).
... 4. anaerobic respiration = does not require oxygen (yeast, bacteria) 5. some organisms produce their own “high energy” food molecules (autotrophic – “producers – plants, some bacteria) while other obtain their food molecules from other sources (heterotrophic – animals, fungi) ...
... 4. anaerobic respiration = does not require oxygen (yeast, bacteria) 5. some organisms produce their own “high energy” food molecules (autotrophic – “producers – plants, some bacteria) while other obtain their food molecules from other sources (heterotrophic – animals, fungi) ...
Macromolecules in Organisms
... oxygen. These four elements constitute about 95% of your body weight. The four main classes of organic compounds (carbohydrates, lipids, proteins, and nucleic acids) that are essential to the proper functioning of all living things are known as polymers or macromolecules. All of these compounds are ...
... oxygen. These four elements constitute about 95% of your body weight. The four main classes of organic compounds (carbohydrates, lipids, proteins, and nucleic acids) that are essential to the proper functioning of all living things are known as polymers or macromolecules. All of these compounds are ...
4. Sports nutrition, pyramid of health, healthy eating, Mediterranean
... Proteins are important biological molecules (biomolecules) that consist of strings of smaller units called amino acids, the “building blocks” of proteins. They are present in every living cell. In the skin, hair, callus, cartilage, muscles, tendons and ligaments, proteins hold together, protect, and ...
... Proteins are important biological molecules (biomolecules) that consist of strings of smaller units called amino acids, the “building blocks” of proteins. They are present in every living cell. In the skin, hair, callus, cartilage, muscles, tendons and ligaments, proteins hold together, protect, and ...
Sports nutrition Carbohydrates
... Proteins are important biological molecules (biomolecules) that consist of strings of smaller units called amino acids, the ―building blocks‖ of proteins. They are present in every living cell. In the skin, hair, callus, cartilage, muscles, tendons and ligaments, proteins hold together, protect, and ...
... Proteins are important biological molecules (biomolecules) that consist of strings of smaller units called amino acids, the ―building blocks‖ of proteins. They are present in every living cell. In the skin, hair, callus, cartilage, muscles, tendons and ligaments, proteins hold together, protect, and ...
Worksheet Answer Key
... quart of boiling water. 8. After the cabbage is immersed in brine water, place a large food grade plastic bag filled with the brine water on top of the cabbage. 9. The cover should not be removed until fermentation is complete. 10. If room temperature is 75 degrees allow 3 weeks for fermentation. 11 ...
... quart of boiling water. 8. After the cabbage is immersed in brine water, place a large food grade plastic bag filled with the brine water on top of the cabbage. 9. The cover should not be removed until fermentation is complete. 10. If room temperature is 75 degrees allow 3 weeks for fermentation. 11 ...
Exam 2
... 20. Penicillin and aspirin are both ____________________________ inhibitors because they do not dissociate from the enzyme to allow it to become active again. 21. An E6V mutation is hemoglobin leads to the disease ________________________________. 22. Draw glycerol: ...
... 20. Penicillin and aspirin are both ____________________________ inhibitors because they do not dissociate from the enzyme to allow it to become active again. 21. An E6V mutation is hemoglobin leads to the disease ________________________________. 22. Draw glycerol: ...
Lactic Acid and Energy from Fats and Proteins
... Process where lactic acid is converted to pyruvate Lactate is transported (by blood) to the liver and converted back to glucose It is then converted into glycogen so that it can be used for energy ...
... Process where lactic acid is converted to pyruvate Lactate is transported (by blood) to the liver and converted back to glucose It is then converted into glycogen so that it can be used for energy ...
fat-soluble
... 2. The first step in amino acid catabolism requires a coenzyme derivative of B6. 3. B6 deficiency is critical to later steps of amino acid catabolism. 4. Pyridoxine is not involved in protein metabolism. ...
... 2. The first step in amino acid catabolism requires a coenzyme derivative of B6. 3. B6 deficiency is critical to later steps of amino acid catabolism. 4. Pyridoxine is not involved in protein metabolism. ...
Chapter 25 - FacultyWeb
... 2. The first step in amino acid catabolism requires a coenzyme derivative of B6. 3. B6 deficiency is critical to later steps of amino acid catabolism. 4. Pyridoxine is not involved in protein metabolism. ...
... 2. The first step in amino acid catabolism requires a coenzyme derivative of B6. 3. B6 deficiency is critical to later steps of amino acid catabolism. 4. Pyridoxine is not involved in protein metabolism. ...
Digestive System
... • Connective tissue & muscles in the wall of the digestive tract are derived from splanchnic mesenchyme that surrounds the endodermal primitive gut (PG) • PG is divided into four parts – Pharynx – Foregut – Midgut – hindgut ...
... • Connective tissue & muscles in the wall of the digestive tract are derived from splanchnic mesenchyme that surrounds the endodermal primitive gut (PG) • PG is divided into four parts – Pharynx – Foregut – Midgut – hindgut ...
Ch. 3 Homework Worksheets
... but these monomers are 14____________________________ in a different orientation. The human digestive tract is not capable of 15____________________________ cellulose, so it passes through the digestive tract unchang ...
... but these monomers are 14____________________________ in a different orientation. The human digestive tract is not capable of 15____________________________ cellulose, so it passes through the digestive tract unchang ...
Digestion
Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion. The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes. In chemical digestion, enzymes break down food into the small molecules the body can use.In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva. Saliva, a liquid secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food; the saliva also contains mucus, which lubricates the food, and hydrogen carbonate, which provides the ideal conditions of pH (alkaline) for amylase to work. After undergoing mastication and starch digestion, the food will be in the form of a small, round slurry mass called a bolus. It will then travel down the esophagus and into the stomach by the action of peristalsis. Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. As these two chemicals may damage the stomach wall, mucus is secreted by the stomach, providing a slimy layer that acts as a shield against the damaging effects of the chemicals. At the same time protein digestion is occurring, mechanical mixing occurs by peristalsis, which is waves of muscular contractions that move along the stomach wall. This allows the mass of food to further mix with the digestive enzymes.After some time (typically 1–2 hours in humans, 4–6 hours in dogs, 3–4 hours in house cats), the resulting thick liquid is called chyme. When the pyloric sphincter valve opens, chyme enters the duodenum where it mixes with digestive enzymes from the pancreas and bile juice from the liver and then passes through the small intestine, in which digestion continues. When the chyme is fully digested, it is absorbed into the blood. 95% of absorption of nutrients occurs in the small intestine. Water and minerals are reabsorbed back into the blood in the colon (large intestine) where the pH is slightly acidic about 5.6 ~ 6.9. Some vitamins, such as biotin and vitamin K (K2MK7) produced by bacteria in the colon are also absorbed into the blood in the colon. Waste material is eliminated from the rectum during defecation.