... of fermentation, producing carbon dioxide (a gas) and ethanol. The rates of the chemical reactions of fermentation depend on the action of enzymes. The enzymes present in yeast cells are specific and will only catalyse the fermentation of certain sugars ...

... the catalytic activities of Catalase. Biological Principal Enzymes are biological catalysts that make possible chemical changes under the condition in cells. They are globular proteins and are coiled into a precise, three-dimensional shape, with hydrophilic R groups on the side of the ...

... activation energy necessary to trigger the redox reaction is too great. Enzymes accelerate the redox reaction by lowering the activation energy, resulting in rapid contaminant degradation. Microbes that live in the soil and groundwater like to 'eat' certain harmful chemicals, ...

... mixture of succinic acid and the enzyme, the action of the enzyme is strongly inhibited. This is because the structure of malonic acid allows it to bind to the same site on the enzyme (b). But there is no oxidation ...

... in order to produce fructose bisphosphate, using ATP, again for the same reason as above. At this stage, all the molecules produced are still 6 carbon molecules. Once the fructose bisphosphate has been produced, it then reacts and splits into ...

... students Loops Whorls Arches Total Ridge count Gender Radial Ulnar (TRC) (M/F) 1 1 6 6 0 185 M 2 3 3 3 0 138 F 3 4 0 0 6 18 M 4 0 0 0 0 84 M 5 5 2 ...

... solution was placed in to each of test-tube 1, 2 and 3. 3. 4 drops of iodine solution was added to each of these solutions. 4. 1 cm of amylase solution was placed in test-tubes 4, 5, and 6 5. 3 beakers ...

... is true that compared to egg white, there is barely any protein present in egg yolk. However, it still exists in small quantities. The rest of the results were quite accurate and made sense. For example, oil is a fat ...

... of prokaryote calls. They do not have a membrane-bound nucleus. The genetic material is in a single strand coiled in the centre to form a nucleiod. They are also single celled organisms. We cannot live without bacteria, yet bacteria causes ...

... thought to have originated as bacteria capable of carrying out oxidative metabolism. Mitochondria are described as bacteria- like elements with a double membrane. Typical mitochondria are small and somewhat less than 1.5 ?m in diameter and 2-8?m in length- about ...

... 30% of starch, however it is an unbranched linear polymer unlike amylopectin. The monomers are joined in1,4 glycosidic bonds. The chains usually have around 300 alpha glucose molecules and form a stiff left handed single helix shape. Starch is the ...

... polypeptide segments. There are two basic types of proteases, the endopeptidases and the exopeptidases. Trypsin is an endopeptidase that is found in the alimentary canal of nearly all invertebrates and vertebrates organisms that digest in this way. It is specific ...

... and the precise three-dimensional structure, so essential for enzyme activity, is lost. At high temperatures therefore enzymes become denatured. When the effect of temperature on enzyme activity is investigated experimentally, a temperature usually called the optimum temperature is observed at which ...

... control. Usually, a control goes through all the steps of the experiment but lacks one essential factor (the experimental variable). The missing factor allows you to observe the difference between a positive result and a negative result. If the control ...

... [A-] CH3COOH + H2O - CH3COO- + H3+O (100 - x) x x = 0.398/1 100 x 0.398 = 28.46 cm3 salt 1.398 Therefore: 100 - 28.46 = 71.54 acid For the making of the buffer pH 8.8: Equations for the dissociation of ammonia and ammonium chloride respectively: NH3 + ...

... concentration. As carbon dioxide is converted into a solid, the net pressure of the gas and the volume decreases. Metabolic processes are important in the production of ATP. Metabolism regulates cellular activities. The pathways regulate the catabolic breakdown of glucose molecules. ...

... that is in turn thought to promote insulin secretion by depolarising the cell, that is, by making the resting potential become more positive. IF 15mM of glucose is added to a beta-cell within an isolated Islet of Langerhans, within about ...

... cycle that, in eukaryotes, often involves mitochondria and chloroplasts C. This chapter covers the various metabolic pathways by which energy is released from food molecules. Slow burning of food molecules generates usable ATP. D. Yeast cells are simple eukaryotes that carry out ...

... biotic and abiotic processes had give rise to complex and highly dynamic systems in soils. Approximately 50% of "typical" mineral topsoil comprises a mix of water and air-filled spaces that fluctuate according to prevailing environmental conditions whereas the other 50% ...

... Colonies to be counted will subsequently develop embedded in the agar. In the spread plate method, a sterilized wire is usually dipped in the suitable diluted suspension of organisms and then used to streak the surface of the surface of ...

... the solution occured naturally through the work of micro-organisms. There were two types: Thiobacillus ferro-oxidans - which oxide the Fe2+ ions; and thiobacillus thio-oxidans - the S2-. Biotechnologists soon discovered that spraying the low-grade ores with the micro-organisms could be ...

... 6.7 1% NaCl solution Fearons reagent 20% NaOH solution pH 6.7 buffer Amylase solution Distilled water Tongs Boiling tubes Boiling tube rack 100 cm3 measuring cylinder 1, 5 and 10 cm3 pipettes and safety pumps Gloves Goggles Cuvettes Stop clock Colorimeter Ice Bath (0 oC), Water baths Bunsen burner Tripod Gauze Heatproof Mat Safety * Lab coat (protect clothes) * Safety goggles (protective eye ...

... the fetus in pregnant women, or can present it self as meningitis in the immunocompromised. L. monocytogenes is widespread in the environment and transmission to man can be via infected animals (such as sheep, cattle and pigs) or through ingestion ...

... instantaneous dipole may affect them and produce induced dipoles Induces Dipoles: * If an unpolarised molecule finds itself next to a dipole, the unpolarised molecule may get a dipole induced in it * The dipole attracts or repels electrons in the charge cloud ...

... In this case, the solid-like property of paraffin is a reflection of the entanglement of its long molecules when they move. If we keep increasing the number of repeating carbon units to, say, 2000, i.e., CH3(CH2CH2)2000CH3, we have a polyethylene ...