Quiz 2 Flashcards
Catabolism
Splitting of complex substances into smaller substances
Coenzymes
An enzyme that needs vitamins to be activated. Thiamine, riboflavin, and niacin are all three essential coenzymes in the Krebs cycle
Cofactor
Functions in the same way as coenzymes, but the molecule required is a mineral or electrolyte
Hormones
Messengers produced by a group of cells that stimulate or retard the function of other cells. Hormones principally control different metabolic functions that affect growth and secretions
Role of the liver
Regulatory role controlling the kinds and qualities of nutrients in bloodstream. Detoxifies drugs. Controls the kinds and qualities of nutrients in the bloodstream: all monosaccharides are converted to glucose in a liver to provide an energy supply for the cells
Role of the kidneys
Removes waste products from the blood. Controls many nutrients (glucose, amino acids, water) in the blood. Removes waste products from the blood and along with the liver controls amount of many nutrients in the blood. They can either move metabolic and products, unnecessary substances absorbed from the gastrointestinal tract and potentially harmful compounds that have been detoxified by the liver
Carbohydrate metabolism
Liver closely monitors glucose level. Insulin for modes uptake of glucose by all cells in the body, enabling them to catabolize and or store it. Deliver and skeletal muscles store glucose for glycogen. If the glucose levels fall below the step point level, hormones such as a glucagon promote the release of glucose from storage in the bloodstream.
Glycogenesis
A process in which sugars fructose, galactose, sorbitol, and xylitol are stored as glycogen
Insulin
A hormone that lowers blood glucose levels
Glycemic affect
The rate at which glucose rises in the bloodstream after a particular food is eaten
Glucogenesis
The process of synthesizing glucose from non-carbohydrate sources
Protein metabolism
Amino acids are transported through portal vein into liver. The liver is a aminostat monitoring intake and breakdown of amino acids. Constant dynamics date between anabolism and catabolism
Liver metabolism
Liver regulates fat metabolism.
Lipogenesis
The process in which glucose is converted to fats
Lipolysis
The process of fat breakdown
Oxidation
The process of hydrolyzing triglycerides into two carbon entities to enter the crab cycle for energy production. During oxidation 1 pound of fat results in the result of 3500 kcal for energy
Ketones
Acidic metabolic products that are formed when an excessive amount of fat are oxidized for energy. They are not oxidized in the liver, but carried to the skeletal and cardiac muscles, we’re under normal circumstances, they are rapidly metabolized
Alcohol metabolism
Supplies kilocalories for the body to use for energy. Metabolized by the liver. When alcohol is present, it is oxidized instead of that. This can cause lipid accumulation in the liver. In addition to liver damage, alcohol can interfere with the transport, activation, and catabolism of almost every nutrient.
Metabolic energy
Potential energy values of food is measured in terms of kilocalories or calories. Energy production: metabolism of nutrients in the Krebs cycle resulting in ATP production.
Calorie
The potential energy value of food and energy exchanges within the body. A kilo calorie is the mount of heat required to raise the temperature of 1 kg of water 1°C
Adenosine triphosphate
Stored cellular energy that results from the metabolism a basic nutrients
Basal metabolic rate
Indicates the energy required for involuntary physiological functions to maintain life, including respiration, circulation and maintenance of muscle tone and body temp
Thermogenic effect
Increase in metabolism that occurs during digestion, absorption, metabolism of energy yielding nutrients
Basal energy expenditure
A person’s total caloric requirement
Type one diabetes – insulin dependent diabetes
Defined as an autoimmune destruction of the beta cells of the pancreas, causing total insulin deficiency. Only 10% of diagnosed cases, commonly occur before age 30. Treated through diet, home blood glucose monitoring, and daily insulin injections
Type two diabetes – non-insulin dependent diabetes
Body produces insufficient amount of insulin or the body cells ignore the insulin and feel to use it to bring glucose into the body cells. Most common form and usually occurs after age 40. Treatment through diet, home glucose monitoring, medication or insulin injections
Fat soluble vitamins
A, D, E, K
Thiamine (B1)
Energy to brain, heart and central nervous system. Essential for carbohydrate metabolism. Deficiencies include beriberi and wernicke-korsakoff syndrome. Necessary for nice in synthesis. Is known as a “morale” vitamin
Riboflavin – B2
Essential for Ike, skin, and mucous membrane health. Necessary for niacin synthesis.
Niacin – B3
Protein synthesis. Pharmacological doses used to reduce cholesterol and triglycerides
Biotin B7
Coenzyme in energy metabolism and glycogen synthesis
Pyridoxine B6
Brain function and production of red blood cells