lipids

• two forms of lipids

  solids-fats

  liquids-oils
• saturated fats are

  single bond in fatty acid chain

  solid

  e.g butter, cheese, cream & fatty meat
• unsaturated fats are

  1+ double bonds in fatty acids chain

  liquid

  e.g olive oil, nuts & avo
• lipids have long-term energy storage
• fats are twice the energy value of carbs
• lipids are stored in adipose tissue
• adipose tissue is located under the skin and is also located around & inbetween organs. It prevents heat loss, and is a "shock absorber", it protects organs from injury.
• Cholesterol can reproduce in the body
• what is the problem of cholesterol?

  can clog blood vessels

  blocking arteries

  accumulating in the heart (=high blood pressure)
• if the blood arteries are blocked, the heart loses blood, leading to heart failure, leading to a heart attack.