If you have not signed up for the NASM FNS yet, you can do so here to save 20%.
If you are unsure which nutrition certification is right for you, I recommend that you take the quiz or check out my article on the top nutrition certifications. This is especially true because the FNS is slightly out of date.
Important definitions to memorize for chapter 6 of the NASM FNS
Acidosis ~ย associated withย abnormally low bloodย hydrogen ion concentrationย (belowย aboutย 7.35)ย as a consequence ofย raisedย activity
Alkalosis ~ Associated with abnormally high blood pH (above around 7.45) because of an increase in basicity
Amino Acid Pool ~ The amino acids in body tissues and fluids that are accessible for new polypeptide synthesis
Biological value (BV) ~ The extent to which polypeptides in food will be incorporated into body proteins. BV is expressed as the proportion of the absorbed dietary nitrogen retained by the body
Buffers ~ Compounds or mixtures of compounds that will take up and unleash hydrogen ions to hold the pH of a solution constant. The buffering action of proteins and bicarbonate within the blood plays a significant role in maintaining the blood pH at 7.35 to 7.45
Celiac Disease ~ A sickness that involves an inability to digest gluten protein, a polypeptide found in wheat, rye, oats, and barley. If untreated, it causes flattening of the villi within the gut, resulting in severe malabsorption of nutrients. Symptoms include looseness of the bowels, fatty stools, swollen belly, and extreme fatigue
Chemical scoring ~ a technique to determine the protein quality of a food by comparing its amino acid composition with that of a reference polypeptide. additionally referred to as amino acid scoring
Chymotrypsinogen/Chymotrypsin ~ A enzyme created by the pancreas that’s converted from the inactive zymogen form (chymotrypsinogen) to the active form(chymotrypsin) within the bowel
Collagen ~ the foremost abundant fibrous polypeptide found in the body. collagen is the major constituent of human connective tissue, forms the molecular foundation for bones and teeth, and helps maintain the structure of blood vessels and other body tissues
Complementaryย proteinย ~ย anย incomplete foodย proteinย whose assortment of amino acids makes up for, orย enhances, another food protein’s lack of specific indispensable amino acids,ย soย the mixย ofย the twoย proteins providesย ampleย amounts of all the indispensable amino acids
Complete (High-Quality) Proteins ~ Proteins that provide all of the indispensable amino acids within the proportions the body requires
Cystic Fibrosis ~ A hereditary disease that causes widespread dysfunction of the exocrine glands, leading to chronicling illness, abnormally high levels of electrolytes (e.g., sodium, potassium, chloride) in sweat, and deficiency of pancreatic enzymes required for digestion
Deamination ~ The removal of the N-terminus (-NH2) from an amino acid
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Denaturation ~ an alternation within the three-dimensional structure of a protein resulting in an unfolded peptide chain that typically lacks biological activity
Dipeptide ~ 2 amino acids joined by a peptide linkage
Disulfide Bridge ~ A bond between the sulfur atoms of 2 sulfur-containing amino acids that helps stabilize the structure of a polypeptide
DNA (Deoxyribonucleic Acid) ~ The carrier of genetic info. Specific regions of each deoxyribonucleic acid molecule, referred to as genes, act as blueprints for the synthesis of proteins.
Edema ~ Swelling caused by the buildup of fluid between cells
Essential Fatty Acids ~ The fatty acids that the body requires but cannot synthesize and that should be obtained from the diet
Essential Nutrients ~ Substances that have got to be obtained in the diet because the body either cannot synthesize them or cannot make adequate amounts of them
Extracellular Fluid ~ The fluid situated outside the cells. It comprises most of the liquid portion of the blood (plasma) and, therefore, the fluid between cells in tissues (interstitial fluid), with fluid within the GI tract, eyes, joints, and spinal cord contributing a small amount. It constitutes about a third of body water
Gout ~ is an intensely painful sort of inflammatory arthritis that results from deposits of needle-like crystals of uric acid in connective tissues and/or the joint area between bones
Hemoglobin ~ The oxygen-carrying protein in red blood cells that consists of 4 heme groups and 4 globin peptide chains. The presence of hemoglobin provides blood its red color
Hydrophilic Amino Acids ~ Amino acids that are drawn to water (water-loving)
Hydrophobic ~ Insoluble in water
Hydrophobic Amino Acids ~ Amino acids that are repelled by water (water-fearing)
Immune Response ~ A coordinated set of steps, together with the production of antibodies, that the immune system takes in response to an antigen substance
Incomplete (Low-Quality) Proteins ~ Proteins that lack one or additional amino acids
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Interstitial Fluid ~ The fluid between cells in tissues. Additionally known as intercellular fluid
Intracellular Fluid ~ The fluid within the body’s cells. It always is high in potassium and phosphate and low in sodium and chloride. It constitutes about two-thirds of total body water.
Intravascular Fluid ~ The fluid portion of the blood (plasma) contained in arteries, veins, and capillaries. It accounts for about fifteen % of the extracellular fluid.
Keratin ~ A water-insoluble fibrous protein that’s the primary constituent of hair, nails, and also the outer layer of the skin
Kwashiorkor ~ is a kind of deficiency disease that happens primarily in young kids with an infectious disease and whose diets offer marginal amounts of energy and very little protein. Common symptoms include poor growth, edema, apathy, weakness, and infection susceptibility.
Marasmus ~ a kind of deficiency disease ensuing from chronic inadequate consumption of dietary protein and energy that’s characterized by wasting of muscle, fat and other types of body tissue
Messenger RNA (mRNA) ~ Long, linear, single-stranded fiber molecules of ribonucleic acids synthesized from deoxyribonucleic acid templates that carry the amino acid sequence of 1 or additional proteins from the nucleus of the cell to the cytosol, where the ribosomes translate messenger RNA into proteins
Motor Proteins ~ Proteins that use energy and convert it into some mechanical work. Motor proteins are active in processes like dividing cells, contracting muscle, and swimming sperm cells.
Neurotransmitters ~ Substances discharged at the end of an excited neuron that diffuses across a smallish gap and binds to another neuron or muscle fiber, stimulating or inhibiting it
Nitrogen Balance ~ Nitrogenous intake minus the added sum of all sources of nitrogenous excretion
Nitrogen Equilibrium ~ Nitrogenous intake equals the added sum of all sources of nitrogenous excretion, Where the nitrogenous balance equals zero.
Nonessential Fatty Acids ~ The fatty acids your body will build once required. It’s not necessary to consume them in the diet.
Oligopeptide ~ Four to ten amino acids joined by amide bonds
Peptide Bond ~ The bond between 2 amino acid residues formed once a carboxyl (-COOH) group of 1 amino acid joins an amino (-NH2) group of another amino acid, releasing water during the process
Polypeptide ~ more than ten amino acids joined by amide bonds
Positive nitrogen balance ~ Nitrogenous intake exceeds the added sum of all sources of nitrogenous excretion
Precursor ~ A substance that’s converted into another active substance. protein precursors, also known as proenzymes
Proenzymes ~ Inactive precursors of enzymes
Proteases ~ Enzymes that break down polypeptides into peptides and amino acids
Protein Turnover ~ The constant synthesis and breakdown of proteins within the body
Protein efficiency ratio (PER) ~ protein quality calculated by comparison of the weight gain of growing animals fed a sampled protein with growing animals fed a high-quality reference protein. It depends on each the digestibleness and, therefore, the amino acid composition of a peptide.
Protein Hydrolysates ~ proteins that are treated with acid or enzymes hydrolyze down into amino acids and polypeptides.
Protein-Energy Malnutrition (PEM) ~ A condition ensuing from long-run inadequate intakes of energy and protein which will result in wasting of body tissues and exaggerated susceptibleness to infection
Ribosomal RNA (rRNA) ~ is a kind of RNA polymer that’s a significant part of ribosomes. It provides a structural framework for peptide synthesis and orchestrates the entire process.
Ribosomes ~ Cell parts composed of peptide placed within the cytosol that translates messenger RNA into polypeptide sequences
Tripeptide ~ 3 amino acids joined by amide bonds
Trypsinogen/Trypsin ~ A proteolytic enzyme made by the pancreas that’s converted from the inactive proenzyme type (trypsinogen) to the active type (trypsin) within the small intestine
Urea ~ย is the primaryย nitrogen-containingย waste productย in mammals.ย Synthesizedย in liver cells from ammonia andย CO2,ย ureaย is carried via theย bloodย to the kidneys,ย whereย it is excretedย in theย body’s waste.
Wasting ~ The breakdown of body tissue like muscle and organs to be used as a protein supply if the diet lacks dietary protein
Tyler Read
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