Chemistry of cosmetics Few people would whip out a chemistry set‚ uncork the vials‚ and slap the compounds on their face. Yet‚ millions of women and girls essentially do that every day when they unzip their makeup bags and apply lipstick‚ mascara‚ and other makeup. Like the compounds in a chemistry set‚ makeup consists of chemicals. Although the chemicals in cosmetic products are intended to improve the appearance of skin‚ lips‚ and lashes‚ some can cause adverse effects. Emulsions The majority
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both germinating pea seeds and crickets. 3. Perform an investigative study of the rate of cellular respiration in both pea seeds and crickets at various temperatures. 4. Compare the alcoholic fermentation of glucose‚ sucrose‚ and starch by yeast. Introduction All organisms must have a continual supply of external energy in order to maintain bodily functions and to combat entropy. Ultimately this source of energy is the sun. As you learned in the previous lab‚ plants can convert the
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MBB 110 2nd Part Energy Generation/Transport For eukaryotes‚ mitochondria generates energy. For prokaryotes‚ cell membrane performs energy synthesis Glycolysis ATP is needed Glucose Pyruvate Net production of 2 ATP Citric acid cycle Substrate level phosphorylation Electron Transport Chain Occurs in cell membrane Sequence involve repair organization Anaerobic respiration: NOT O2 Aerobic respiration: O2 final acceptor ATP is produced by the Proton Motive Force Chemiosmosis H+ accumulates
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actually hinder the enzymatic reaction. My reasoning behind this is that the substrate will take a longer time to mix with the fluid acids‚ and thus much of the time will be wasted when the enzyme makes contact with the combined substances. Design: In order to do this‚ we will be using the following materials: Yeast Packet (this will be our enzyme‚ which comes from (source))‚ 30 mL 3% Hydrogen Peroxide (this will be our substrate)‚ (2) 250 mL Beakers‚ 3 Balloons‚ H 2 O 2‚ Measuring Spoon‚ Permanent
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respiration in yeast/onion cells. * Measure respiration rate using different substrates. * Measure respiration rate at different temperature. Introduction: In this laboratory experiment‚ we are given 3 task. The first one is respiration in yeast. Second is respiratory indicator and the third one is observing mitochondria in yeast/onion cell. The first experiment is about investigation of sugars yeast. We will determine which sugars yeast can be use for cell respiration. When the yeast undergoes
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An induction in the enzyme production/activity was noted when fungal isolate (Aspergillus niger) was grown on cellulose as a sole carbon source while a very low rate of enzyme activity/production was observed when glucose was used as sole carbon substrate. These results are in agreement with
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vice versa‚ which in enough to dissociate the substance » Hydrophilic: substances that readily dissolve in water (polar) » Hydrophobic: substances that tend to be insoluable in water (non-polar) Biomacromolecules (a.k.a. organic molecules) Carbohydrates ∝ Chemicals
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Writing of Lab Reports __________________________________________________________________________ W hy should I bother writing lab reports in the correct way?” The Foundation Programme is designed to prepare you for undergraduate studies at UTAR which will require the writing of lab reports all years generally. At the end of your third year‚ you may have an opportunity to work on scientific projects which will culminate in an official scientific report. Depending on the quality of your report
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Increasing the number of cells. Variety of Living Organisms Plants: o o o o o o Multicellular organisms Contain chloroplasts and are able to carry out photosynthesis Have cellulose walls outside the cell walls to provide support to the cell Store carbohydrates as starch and sucrose Have large permanent vacuoles filled with cell sap that contains water and dissolved substances Vary greatly in size and shape Example of flowering plant: Rose Examples of cereals: Maize Examples of non-flowering plant:
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would take an extremely long time to happen. In order to catalyze reactions‚ the substrate‚ the reactant the enzyme performs on‚ must first bind to a specific area on the enzyme called the active site. It is currently believed that there are several different methods in which an enzyme lowers the activation energy of a reaction and therefore speeds up the process. To begin with‚ by binding with the substrates‚ the enzyme is able to bring the different reactions closer together‚ making it easier
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