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Science Pentathlon
Lam's Science Pentathlon Flash Cards
18
Science
7th Grade
01/22/2010

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Term
Water
Definition
A compound of two hydrogen atoms and a oxygen atom. It is used for most chemical reactions in cells. Makes up approximately 70% of cells.
Term
anaerobic
Definition
Organisms that can live without air.
Term
aerobic
Definition
Organisms that need air to survive.
Term
Producer
Definition
An organism that makes its own food through photosynthesis.
Term
consumer
Definition
Organisms that must consume other organisms to obtain energy.
Term
Decomposers
Definition
Consumers that get their energy by breaking down nutrients in dead organisms.
Term
Proteins
Definition
Large molecules that are made of amino acids which have many functions.
Term
enzymes
Definition
Proteins that start or speed up chemical reactions in cells.
Term
Carbohydrates
Definition
Molecules made of sugars which store energy for cells.
Term
Simple Carbohydrates
Definition
Carbohydrates that are made of one or a few sugar molecules and include table sugar and glucose.
Term
Complex Carbohydrates
Definition
Carbohydrates that are made of hundreds of sugar molecules linked together.
Term
Lipids
Definition
Molecules that cannot mix with water, and can store energy.
Term
Phospholipids
Definition
Molecules that form much of the cell membrane . It's "head" is attracted to water, and the tail isn't. When in water, they form a phospholipid bilayer, with the tails of both rows touching.
Term
Glucose
Definition
A simple carbohydrate, the most common source of energy for a cell.
Term
Fats and Oils
Definition
Lipids which store energy. Some(f) are solid at room temperature, and others(o) are liquid. Some(o) are mainly in plants, and others(f) in animals.
Term
ATP
Definition
Adenosine Triphosphate, the major energy carrying molecule of cells.
Term
Nucleic Acids
Definition
Molecules that carry the directions for how to make proteins.
Term
Nucleotides
Definition
Small molecules which make up nucleic acids.
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