Transcript 32.1 Nutrients and Homeostasis

32.1 Nutrients and Homeostasis
On notebook paper
name
date
block
List and describe the seven
parts of a food label
32.1 Nutrients and Homeostasis
• 1st lab Testing for the Effectiveness of
Antacids
• 2nd- finish yesterday’s activity or Wed. video
Questions
32.1 Nutrients and Homeostasis
Design a chart
Title: Nutrients and Homeostasis
Nutrient
Functions
Found in Foods Like:
32.1 Nutrients and Homeostasis
Design a chart (3 columns and 20 rows)
Title: Vitamins and Minerals page 973 and 974
Nutrient
Sources
Important for:
32.1 Nutrients and Homeostasis
KEY CONCEPT
Cells require many different nutrients.
32.1 Nutrients and Homeostasis
The six types of nutrients are water, carbohydrates,
proteins, fats, minerals, and vitamins.
• Water makes up 55% to 60% of your body.
– involved in nearly every cell and body process
– need 2 liters (8 cups) a day to replace fluid lost
32.1 Nutrients and Homeostasis
• Carbohydrates are the main source of energy for the body.
– simple and complex carbohydrates supply glucose
– fiber from plant foods helps elimination
Simple and Complex Carbohydrates
32.1 Nutrients and Homeostasis
• Proteins are necessary for growth and repair of the body’s
cells.
Proteins and Fats
– body makes 12 out of 20 amino
acids
– other eight essential amino acids
come from food
• Fats provide energy and key
building components.
– fats are saturated and
unsaturated
– essential fatty acids come from
food
32.1 Nutrients and Homeostasis
Meeting nutritional needs supports good health.
• During puberty, you require more nutrients and Calories.
– One Calorie equals one
kilocalorie, or 1000 calories.
– 1g of protein or carbohydrate
equals 4 Calories.
– 1g of fat equals 9 Calories.
32.1 Nutrients and Homeostasis
• Minerals are inorganic materials.
– help to build or repair tissues
– replenished by eating variety of foods
32.1 Nutrients and Homeostasis
• Vitamins are organic molecules that work with enzymes.
– vitamins are fat-soluble and water-soluble
– regulate cell functions, growth, development
– replenished by eating variety of foods
32.1 Nutrients and Homeostasis
Complete # 7 on “Eating for Your future” Video Sheet
• Carbohydrate-An organic molecule found in the form of
starch, sugar, and fiber. A major source of dietary energy.
• Cholesterol- a waxy substance produced by the liver and
found in animal fats, cell membranes. Too much can
build up on the walls of the arteries. Leading cause of
heart disease.
• Diet- the type of food eaten each day. Needs to be
balanced.
32.1 Nutrients and Homeostasis
• Fat- high energy food that contain twice as much energy
as equal amounts of carbohydrates. One of the three
basic food types. High in calories and can lead to weight
gain.
• Food- fuel that gives the body the energy it needs to
perform in order to stay alive.
• Protein-a naturally occurring substance made of amino
acids found in animal products, and some plant products.
Nuts, meats, fish, egg whites, grains
32.1 Nutrients and Homeostasis
• Saturated fats-fats that are solid at room temperature,
Some raise cholesterol level. Ex. butter, vegetable
shortening, margarine.
• Trans fats- created by turning unsaturated fats into
saturated fats in a process called hydrogenation. All raise
cholesterol levels
• Unsaturated fats- fats that are liquid at room temp.
(vegetable oils, olive oil, peanut oil). Tend to decrease a
person’s cholesterol level.
32.1 Nutrients and Homeostasis
• Cholesterol-a waxy food substance produced by the liver
and found in animal sources. Too much clogs arteries.
• Trans fats-created by turning unsaturated fats into
saturated fats through a process called hydrogenation
32.1 Nutrients and Homeostasis
Calories and Metabolism
• Calorie- a measure of a unit of energy food in food.
• Metabolism-all chemical processes that synthesis or
breakdown materials with an organism.
32.1 Nutrients and Homeostasis
RDA
• Recommended Daily Allowance
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis
• Food labels can help you make good eating choices.
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis
• A balanced diet of whole foods provides the best nutrients
and Calories.
• Food and physical activity also need to be balanced.
MALES
FEMALES
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis
32.1 Nutrients and Homeostasis