biological catalysts. They are made in livings things built up by amino acids to make protein. Enzymes are able to speed up reactions and can repeat reactions. There are various factors that affect the activity of enzymes they are: "Y Temperature "Y pH "Y Specificity "Y Concentration of enzyme or substrate Enzymes are specific‚ this means that they only work on one substrate molecule. A substrate molecule is what the enzyme actually works on. The factors I have chosen to investigate are temperature
Premium Enzyme
If the amylase successfully digests the starch‚ what results would you expect? If the amylase successfully digests the starch‚ I would expect a no color change occur as well as a presence of glucose in the intestine (Dialysis tubing). If the amylase only partly digests the starch‚ what would you expect to happen? If the amylase only partly digests the starch‚ I would expect to see a faint color change as well as a small presence of glucose inside the intestine. If the amylase fails to
Premium Starch Chemistry Enzyme
Rough edges of that tongue that contain the taste buds Hard and soft palate • Separate the nasopharynx from the mouth Parotid gland • Secretes saliva (amylase enzyme) which breaks down starches into sugar Stomach • Stores food • Begins digestion of tissues and proteins by secretion of gastric juices. These juices are very acidic (pH 1-2). The semi-digested stomach contents are called chyme Esophagus • Transports food from the mouth to the stomach. Waves of involuntary muscle contraction
Premium Digestive system Digestion Stomach
mouth‚ digestion of the food starts by the action of mastication‚ 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. 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
Premium Digestion Stomach
the sandwich is chewed with our teeth; the incisor teeth and canine teeth bite it into chunks. The premolar and molar’s grind the chunks of food into much smaller pieces. Saliva’s produced that helps the food become a paste. Here‚ the amylase enzymes turn the starch molecules (from the bread) into maltose – which is used by cells to give us energy. The bolus (lumps of food) squeezes past the epiglottis then down the oesophagus which connects the throat to the stomach. The bolus then enters the stomach
Premium Digestion Stomach Liver
increase in temperature up to a maximum and then declines. A bell shaped curve is usually observed. 4. EFFECT OF pH: Increase in hydrogen ion concentration (pH) considerably influences the enzyme activity and a bell shaped curve is normally obtained. Each enzyme has its own optimum pH at which the velocity is maximum. Below and above this pH‚ the enzyme activity is much lower and at extreme pH‚ the enzyme
Premium Enzyme Cellulose
activity of the starch-digesting enzyme‚ amylase. When the diet pill binds to the amylase‚ it prevents the breakdown of starch. In the Biology 1103 lab‚ we conducted two experiments to determine whether or not the diet pill‚ Carb Cutter‚ actually worked. In each experiment we used an experiment tube and a control (blank) tube. The purpose of a blank is to set a base level (zero) from which other measurements can be performed. In the first experiment we were trying to see if the amylase would digest
Premium Nutrition Digestion Starch
positioned around the substrate molecules. Any change in the shape of the overall folded enzyme molecule can change the shape of the binding site. The optimum reaction conditions are different for each enzyme. The correct environmental conditions‚ proper substrates‚ and‚ often‚ particular cofactors associated with an enzyme are needed. In some instances‚ the optimum conditions can be deduced fairly accurately based on the following: • The organism from which the enzyme is derived • The part of the organism
Premium Enzyme
can be identified. In this experiment‚ a single bacterial colony was isolated form Mycorrhizal spores‚ and further tests done on that colony. Sub culturing was done after each week to ensure that the bacterium has sufficient nutrients required for optimum growth that will last the duration of the entire experiment. A flow chart was created based on the results of the physiological tests in order to identify the isolated bacterium. After 4 weeks‚ the isolated bacterium was identified as XXXXX for reasons
Premium Enzyme Gram staining Bacteria
by adding Benedict’s solution and heating it‚ there would be a color change if a reducing sugar is present‚ or it will remain blue (no reducing sugar). The objective of the Starch test was to test for starch in substances by using Iodine. The iodine will cause a substance to turn to a dark blue color if it is positive for starch. The objective for the Grease Spot Test was to test if the substance had a lipid. A positive reaction would make a translucent grease mark on a brown paper bag. The objective
Premium Protein Glucose Fructose