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NBIS science quiz 10-29
N/A
29
Science
7th Grade
10/27/2014

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Term
Nutrient
Definition
Substances in food that provide the raw materials and energy the body needs to carry out all its essential process
Term
What are the six groups of nutrients
Definition

Fats

Proteins

Vitamins

Minerals

Water

Carbohydrates

Term
Calorie
Definition
The amount of energy needed to raise the temperatureof one gram of water by one degree celcius
Term
How many calories does an adult need
Definition
2,500 calories a day
Term
Carbohydrate
Definition
composed of carbon, oxygen and hydrogen (are a major source of energy)
Term
Glucose
Definition

The major source of energy for your bodys cells.

Term
Fats
Definition
Energy containing nutrients that are composed of carbon, oxygen, and hydrogen
Term
Proteins
Definition

Nutrients that contain nitrogen as well as carbon, hydrogen, oxygen.

Term
Amino Acid
Definition

Linked together chemically to form large protein molecules

Term
Vitamins
Definition
Act as a helper molecules in a variety of chemical reactions in the body
Term
Minerals
Definition
Nutrients that are not made by living things
Term
Digestion
Definition
The process by which your body breaks down food into small nutrient molecules
Term
Absorption
Definition
The process by which nutrient molecules pass through the wall of your digestive system in your blood
Term
Saliva
Definition
The fluid released when your mouth waters. Contains enzymes to convert starch into sugar
Term
Epiglottis
Definition
Seals off your wind pipe preventing food from entering
Term
Esophagus
Definition
A muscular tube that connects the mouth to the stomach
Term
Mucus
Definition
A thick, slippery substance produced by the body, makes food easier to swallow & move along.
Term
Peristalis
Definition
Involuntary waves of muscle contraction that helps move food along.
Term
Stomach
Definition
A j shaped, muscular pouch. Helps digest food.
Term
Enzyme
Definition
Proteins that speed up chemical reactions in the body
Term
Small Intestine
Definition
most chemical digestion takes place
Term
Liver
Definition
Breaks down many substances prodces bile.
Term
Bile
Definition
Substance that breaks up fat particles
Term
Gallbladder
Definition
The organ that stores bile
Term
Pancreas
Definition
Helps break down certain food, and produces blood cells
Term
Villi
Definition

Help absorb nutrient molecules

Term
Large Intestine
Definition
where most water absorption takes place
Term
Rectum
Definition
The large intestine ends in a short tube. Waste is stored and comapacted for evacuation
Term
Anus
Definition
A muscular opening at the end of a rectum. Releases waste.
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