Calorimetry Study guides, Class notes & Summaries

BTEC LEVEL 3 ASSIGNMENT 2B - Undertake calorimetry to study cooling curves This assignment was awarded a distinction D upon first submission. Use this as a reference in order to see how a distinction level assignment is constructed

BTEC Level 3 Applied Science Unit 2: Practical Scientific Procedures and Techniques Learning Aim B: Undertake calorimetry to study cooling curves Describe the risk factors and features of atherosclerosis - ANS-o risks: smoking, diet and high blood pressure o effect of white blood cells (foam cells) o plaque in artery walls o reduction of lumen diameter o rupture of protective membrane over plaque formation of blood clot (thrombus) Describe the structure and function of endothelial t...

Practicals Chemistry AQA A-level Rated A+ Required Practical 1 - titration and making a standard solution Making a standard solution 1. weigh the required mass of solid using a sample bottle on a 2 dp balance. 2. transfer the solid into a beaker using distilled water to wash it out- preventing any solid remaining in the sample bottle. 3. reweigh the sample bottle and work out the difference. 4. Add 100cm3 of distilled water to the beaker to dissolve the solid (small volume of water) using a...

Metabolism - Answer Total energy expenditure of all cata/anabolic processes (bodies ability to use fuel) Measured by either direct (calorimetry chamber) or indirect (Douglas bag/metabolic cart) calorimetry Calorimetry = measure of energy expenditure (kcals = E to heat 1kg water 1°C) Oxidation-Reduction Reaction - Answer - Are always *coupled reactions* (the energy given off by the exergonic reaction powers the endergonic reaction) - *Oxidation*: removing an electron - *Reduction*...

Unit 2 Practical Scientific Procedures and Techniques Assignment B - Undertake calorimetry to study cooling curves I was awarded a DISTINCTION for this assignment.

How many calories is a pound of fat? Correct Answer-Equivalent to 3500 calories What are the 3 components of total energy expenditure? Correct Answer-70% Resting metabolic rate (RMR) , 10% thermic effect of food (TEF), & 20% Physical activity make this Name at least 4 factors that affect RMR (resting metabolic rate) Correct Answer-1) Body size 2) Body composition 3) Age 4) Hormones (book says gender, but they're getting at hormones); e.g., burn more cals when you are on your period ...

Energy sources - Carbs and protein= 4 cal/gram; fat= 9 cal/gram; the brain uses glucose for energy, uses ketone bodies during starvation Tissue storage of glucose - Muscles and liver= store glycogen; adipose tissue= fat; cellular mass= protein stores Gluconeogenesis= conversion of non-carb sources into glucose by glycerol and amino acids Homeostasis - Keeps the internal environment/temp of the body at a state of equilibrium Cellular oxidation - Enzymes= proteins, organic catalysts tha...

Define Calorimetry Correct Answer-Determining the changes in energy of a system by measuring the heat exchanged with the surroundings Know how to calculate amount of energy released using E=mc(delta)T Correct Answer-E=energy, m=mass, c=specific heat, (delta T)=change in temp What is meant by a small calorie "c" and a food calorie "C"? Correct Answer-c=1 calorie=4.184 J, C=1000 little calories=4184 J When walking, an average person burns .453 C/(mile*pounds). How many C does a 150-po...

Know your significant figure rules Correct Answer-ALL zeroes between non-zero numbers are ALWAYS significant. ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant. ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant. define calorimetry Correct Answer-the act of measuring heat required or evolved during a chemical process know how to calculate the amount of ener...

CNSC Exam Latest 2023 with Certified Solutions Half life of albumin and pre-albumin Albumin: 14-20 days Prealbumin: 2-3 days List negative acute phase proteins Prealbumin Albumin Transferrin Retinol-binding protein (decreased in inflammation) List positive acute-phase proteins Cytokines CRP (c-reactive protein) Define sarcopenia Age-related muscle mass Cachexia Loss of muscle mass, irrespective of adipose tissue changes (not responsive to nutrition interventions/support) +1 edema 2 mm depre...