Chapter 3 Reading Questions: 1. Core Case Study: “Have you thanked your insects today?”- Explain why insects are significant. Many of the earth’s plant species depend upon insects to pollinate them. Carnivorous insects‚ such as the praying mantis‚ control the ‘pest’ insect population. 2. What percentage of the species on this planet consists of insects? Animals? Plants? 53% are insects; 20% are other animals; 18% are plants. 3. Give three examples of how we benefit from microbes. Soil bacteria
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20.00 12.0 30.00 16.0 40.00 20.0 50.00 Table: 1- Recording of concentration‚ volume‚ and qualitative observations of various solute/solvent/solution used during the experiment. Name Concentration (%) Volume (ml) Qualitative Observations Glucose (C6H12O6) 5 different types: 4%‚8%‚12%‚16%‚20% 5.0 ± 0.1 ml Clear‚ Colourless Name Concentration (M) Volume (ml) Qualitative Observations Potassium Permanganate (KMnO4) 0.010 M 1.00 ± 0.05 ml Intensely pink/purple Sulphuric Acid (H2SO4) 1 M 5.0 ± 0.1 ml
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Lecture 2 Macromolecule components of cells I Chapter 5 Dr Ahmed Aldarmahi Assistant Professor College of Medicine – Jeddah Lecture Objectives • Distinguish between monosaccharides‚ disaccharides and polysaccharides. • Distinguish between saturated and unsaturated fats. • Describe phospholipids and steroids. Glossary • • • • • • • MonoDiPolyMacroPolymer Phospholipids Steroid Overview: The Molecules of Life • All living things are made up of four classes
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during respiration in sunflower beans with and without soda lime RQ calculation of Glucose: The Respiratory Quotient (RQ) is calculated from the formula‚ RQ = CO2 eliminated / O2 consumed The equation for the respiration of Glucose( C6H12O6 ) C6H12O6 + 6O2 6CO2 + 6H20 Therefore RQ = 6 molecules of CO2 eliminated / 6 molecules of O2 consumed = 6/6 RQ for glucose = 1 Calculating the RQ of mung beans : From the above formula of RQ‚ we can calculate the amount Oxygen
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It is a pathway where ATP is produced from the working cells. 2. What are the raw materials for cellular respiration? The raw materials are glucose and oxygen. 3. What is the simple reaction for cellular respiration? C6H12O6+6O2=6CO2+6H2O+Energy 4. Why is it not practical for an organism to release all of the energy in glucose at once? There wouldn’t be any energy left to repeat cellular respiration and create more energy. 5. List and briefly describe
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INTRO TO PHYSIOLOGY I. Physiology – the science (study) of body function a. Uses biochemistry‚ cell biology‚ genetics‚ chemistry and physics b. Can be applied to study the cell‚ organ‚ system‚ or organism (whole-body) II. Cell – smallest living unit c. Can individually carry out it’s own basic life processes d. Specialized functions make their working together important to whole body operation III. Major tissue types (tissue = group of similar functioning
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moved out of the tube. The color changed from transparent to orange. The Effect of Weight on Diffusion: Molecule Molecular Formula Did it cross selectively permeable membrane Starch Polysaccharide made up of many Glucose molecules No Glucose C6H12O6 Yes The Effect of Weight on Diffusion’s Speed: We put 3 elements in a TSA plate and left them for 30 minutes to see where diffusion is faster‚ the results are: 1. Potassium permanganate KMnO4: Mw= 158.034 g/mol [Fast] 2. Methylene
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Introduction Notes What is Science? Study of/tool to understand/body of knowledge/process to understand the natural world What do Scientists do? Make observations Attempt to discern patters Assume the future is like the past What is Biology? The study of life What is Life? Not ever clearly defined Characteristics of living systems: Highly organized Huge energy users 90% of food we eat is used to keep us going Development Development from a single cell to billons of cells Reproduction
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increase to make room for the foreign object or substance in which in this case is carbon dioxide. Cellular respiration is a chemical process in which breaks down sugars into water and carbon dioxide. The equation for cellular respiration is as followed C6H12O6 + 6O2 -->
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light hits the tube the leaf discs will produce oxygen gas and float to the top. 4. Oxygen accumulates in the air spaces of the spongy mesophyll‚ and the leaf disk will once again become buoyant and rise in a column of water. Conclusion: 6CO2+6H2O→C6H12O6+6O2. 2. Water‚ Light and Temperature are the main environmental factors that will affect photosynthesis‚ along with availability of CO2 3. If photosynthesis ceased there would be little food or organic matter on Earth. Most organisms would disappear
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