Correlation: two variables are positively correlated when an increase in one is accompanied by an increase in the other • Large amounts of data are needed to ensure that the correlation is statistically significant o This ensures that it didn’t happen by chance •...
WHY HAVE A HEART AND CIRCULATION? The purpose of the heart and circulation is to move substances around the body. In small creatures such as unicellular creatures- substances such as oxygen, carbon dioxide and digestive products are moved around the organism by...
• Body mass index (BMI): conventionally used method of classifying body weight relative to a person’s height. • To calculate BMI: o Body mass (Kg)/ height (meters) squared • Evidence suggests that waist-to-hip ratio is a better measure of obesity than BMI. o And it...
• Recommended amounts for nutrients and daily energy requirements GETTING IT RIGHT • Dietary reference values (DRVs): are estimates of the requirements and aren’t recommendations or goals for individuals • These include: o An estimated average requirement (EAR) o A...
• Obesity can increase the risk of CHD and stroke even without other risk factors being present • The more excess fat carried especially around the middle, the greater the risk is to the heart • Obesity can also increase the risk of type II diabetes o Which in turn...
LIPIDS Are organic molecules found in every type of cell Are insoluble in water but soluble in organic solvents g. ethanol SYNTHESIS OF A TRIGLYCERIDE Triglycerides are made up of 3 fatty acids + 1 glycerol molecule linked by condensation reaction Ester bonds form...
(i) know the difference between monosaccharides, disaccharides and polysaccharides, including glycogen and starch (amylose and amylopectin) (ii) be able to relate the structures of monosaccharides, disaccharides and polysaccharides to their roles in providing and...
Understand the importance of water as a solvent in transport, including its dipole nature Water is a polar molecule= it has an unevenly distributed chemical charge The two hydrogens are pushed towards each other forming a V shaped molecule Hydrogen= slightly positive...