A product acts as an inhibitor of one of the enzymes in the pathway to regulate metabolism. Centriole: a structure in an animal cell composed of microtubule triplets arranged in a 9+0 pattern. An animal usually has a pair of centrioles within each of its centrosomes. Chloroplasts: photosynthesizing organelles of all photosynthetic eukaryotes. Competitive inhibition: resembles the enzyme’s normal substrate and competes with the substrate for the active site on the enzyme. Countercurrent exchange:
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the mode of action of this drug? Metronidazole or commonly known as Flagyl is a widely used amoebicide used to treat mild to severe intestinal infections and hepatic disease caused by Entamoeba histolytica. It works by invading essential metabolic enzymes of the pathogens and is also used for infections caused by Giardia lamblia and Trichomonas vaginalis. 12. Name and describe the modes of actions of the drugs used to treat tapeworms. Mebendazole and thiabendazole are broad-spectrum antiparasitic
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of an enzyme reaction‚ but this time in the absence and then presence of an inhibitor. Last time you used Acid Phosphatase (Prac 1)‚ but this time you will use the enzyme Alkali Phosphatase. These enzymes have different primary (and hence tertiary) structures‚ pH optima and cofactors‚ so are more unlike than alike. However‚ Alkali Phosphatase can also catalyse the hydrolysis of the artificial substrate PNPP to PNP + P i‚ so PNPP will again be the substrate in this prac. The inhibitor you will
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Title: Investigation of the Enzymatic Effects of Materials on Hydrogen Peroxide Solution Objective: To investigate the enzymatic effect of various materials in the hydrogen peroxide solution Apparatus and Equipment: Beaker‚ Boiling tubes‚ Water bath‚ Pen knife‚ Glass rod‚ Parafilm. Materials: Fresh liver‚ Potato cubes‚ Manganese dioxide‚ Hydrogen peroxide‚ Wood splints Procedures: 1. Six fresh empty boiling tubes 1‚ 2‚ 3‚ 4‚ 5‚ 6 were labeled. 2. The liver provided was cut into
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HYDROGEN PEROXIDE INTRODUCTION Enzymes function similarly to a lock a key mechanism where only one specific key will work (U and Fischer‚ 1994). An enzyme is a macromolecule that acts to increase the rate of either a substrate breaking down into two or more products‚ or where two substrates join up to form one product (Dundon‚ 2018). These enzymes perform this by lowering the activation energy required for the reaction to occur under normal conditions. For the enzymes to lower the activation energy
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to release an enzyme called amylase. Amylase is the enzyme found in your saliva. The purpose of this enzyme is to help in the digestion process (McD‚ 2002). Enzymes are biological catalyst that help speed up the reaction by lowering the activation energy. These enzymes allow your food to be digested at a faster rate (National Institute of Asian Medicine‚ 2007). There are many factors that can affect the efficiency of enzymes which include pH levels‚ the amount of substrate‚ inhibitors‚ and temperature
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within the orderly environment of the cell. a. The chemistry of life is organized into metabolic pathways Metabolic pathways begin with a specific molecule‚ which is then altered in a series of defined steps to form a specific product. A specific enzyme catalyzes each step of the pathway. Catabolic pathways release energy by breaking down complex molecules to simpler compounds. A major pathway of catabolism is cellular respiration‚ in which the sugar glucose is broken down in the presence of
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can affect the optimum operation of enzymes. These condition include temperature‚ enzyme concentration‚ substrate concentration‚ acidity‚ salinity‚ and any present activators/inhibitors. In this particular lab‚ temperature was the environmental factor studied. More specifically‚ the enzyme catalase and its substrate hydrogen peroxide were tested under different temperatures. It was discovered that‚ temperature can affect the optimum operation of enzymes; The enzyme catalase has an optimum operation
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CHAPTER 8 AN INTRODUCTION TO METABOLISM Metabolism‚ Energy‚ and Life 1. Explain the role of catabolic and anabolic pathways in cellular metabolism. Catabolic means the molecule is broken down into smaller parts. Anabolic means molecules are used to build bigger compounds. 2. Distinguish between kinetic and potential energy. Kinetic energy is the energy of object in motion. Potential energy is the energy a object has due to its position or traits. 3. Distinguish between
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Title: Investigation of protease activities in different fruit juices Aim: To investigate the protease activities in different fruit juices Background info: Fruit such as pineapple‚ kiwi fruit‚ papaya and guava contain proteases (in different amounts)‚ which can speed up the breakdown of proteins. As milk-agar plate is a milk protein‚ so when it is incubated with fruit juices containing proteases‚ the milk protein will be broken down and clear zones will appear around the wells containing different
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