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Food Energy and Health
Transcript of Food Energy and Health
Avoid Tobacco Products
They are toxic, or harmful to the body.
They contain carbon monoxide which interferes with the body’s ability to carry oxygen
Smoking can cause tar to line the inside of the respiratory system
Cigarettes contain chemicals called carcinogens, which cause cancer.
Lung cancer, mouth cancer, stomach cancer, emphysema, heart disease.
Tobacco products also contain nicotine, a drug known as a stimulant, that can cause addiction – a physical dependence on a substance.
Too many carbs are bad!
Only too many simple carbohydrates are bad. They are “empty calories” that have calories and no other nutrients.
Carbohydrates aid in digestions.
You can’t have any fats!
Small amounts of unsaturated aid in digestion and the absorption of nutrients.
Salt is a natural mineral, so it must be good!
Increased amounts of salt in your diet can lead to high blood pressure
All energy comes from cellular respiration.
Cellular respiration is a metabolic process.
Formula for cellular respiration:
C6H12O6+O2 -> CO2+H2O+Energy
Breaks down sugar (glucose) and releases stored energy.
We use glucose as a source of energy.
Plants get their energy from Photosynthesis
Formula for photosynthesis:
Plants use the glucose to carry out growth and reproduction.
Parts of the digestive system: mouth, stomach, intestines
The Digestive System takes the food and breaks it down into smaller molecules that can be absorbed by the body.
The stomach contains gastric juices composed of the enzyme pepsin, hydrochloric acid, and mucus to break down food in chemical digestion.
Most of the digestion that occurs happens in the small intestine:
Proteins -> amino acids
Carbohydrates -> simple sugars
Fats -> fatty acids and glycerol
We need nutrients to supply a source of energy!
How do we get the energy and nutrients from our food to our cells?
What do organisms need to grow and produce cells?
Drug abuse is when you use a drug in a way that is not helpful.
Heroin, cocaine, someone else’s prescription pills
Alcohol is a drug. Alcohol is involved in almost one-third of the deaths caused by car accidents.
Most illegal drugs impair your nervous system, causing nervousness and loss of appetite. They also can cause brain damage and long-term memory loss.
Alcohol and Drugs
Design a Balanced Meal
Lipids combine with other nutrients
Purpose is for energy and growth.
Essential Nutrients: Fats
Composed of Carbon, Hydrogen, Oxygen, and Nitrogen
Purpose is for building materials that cells need, growth, and repair of cells.
The amino acids that make up protein are the building blocks of our body tissue.
Essential Nutrient: Protein
The energy within food is known as a calorie.
A calorie is the amount of energy needed to increase the temperature of 1 gram of water by 1 celsius.
The Calories that we count when we are on a diet is actually 1,000 calories.
The major organs of the Respiratory System are the lungs.
Oxygen taken from the air passes through the circulatory system and transports oxygen to the cells.
Major parts of the Circulatory System: heart, veins, arteries and blood
The circulatory system delivers the molecules from the digestive system to all parts of the body through the blood.
Exercise gets the blood pumping.
Exercise increases the efficiency of cellular respiration because it increases the oxygen intake in the blood.
Living a sedentary lifestyle (not exercising) leads to obesity.
Composed of hydrogen, oxygen, and carbon
Purpose is to provide energy (calories) for muscles, nerves, and the brain.
Good source of fiber, which aids in digestion.
Essential Nutrient: Carbohydrates
Makes up 72% of the human body.
Water aids in transporting nutrients to cells, carrying waste away, and digestion.
Essential Nutrient: Water
Includes the brain and sensory organs.
You must first either sense the presence of food or recognize that you are hungry.
Your nervous system directs the muscular and skeletal systems to pick up and eat the food.
Essential for growth and health.
Main purpose is to facilitate and regulate body processes.
Essential Nutrient: Vitamins
Help regulate processes in our body.
Calcium aids in bone growth
Iron helps transport oxygen in red blood cells.
Essential Nutrient: Minerals