Реферат: BIO Notes On Organic Chemistry Essay Research

· Starch and glycogen are broken down into glucose.

· Fat is broken down into fatty acids and glycerol

IMPORTANCE OF FOOD STORES

· Storage of food in organisms usually mean they are going to be packed together closely, this means anything like this can be a rich source for humans

Obtaining energy from food

FOOD CONTAINING ENERGY

· We can check this by burning food and estimating the amount of heat given out. (kJ)

· kJ per Gram carbohydrates-17, fat-39, protein-18

ENERGY CONTAINED IN FOOD

· determines how it should be cooked

· Depends on substances inside the food.

ENERGY PER DAY

· Basal metabolic rate: rate at which body processes take place

· Roughly 7000kj per day if lying down doing nothing

· At least 9200 kJ per day for doing nothing but essential tasks

EXCESS EATING

· Most excess not used is turned into fat. Body weight increases

· Obesity is when we take in more energy (through food) than we give out.

· More exercise, consumption of less energy-containing foods stop or decrease obesity

MINIMAL EATING (STARVATION)

· First energy stores from fat will be used up.

· Takes energy from muscles

· Becomes thin and weak

· Anorexia nervosa: psychological loss of appetite

· Marasmus wasting away due to starvation

Energy release-respiration

FOOD BURNING

· Oxygen is needed

· Carbon dioxide, water and heat are produced