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28 Cards in this Set
- Front
- Back
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A hypothesis is |
A scientist guess to explain an occurrence |
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A dependent variable is |
The data that is observed and measured as a result of the independent variable |
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Independent variable |
The variable that is being tested |
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Theory |
An explanation of a natural phenomenon that is backed up by scientific evidence |
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Matter |
Anything that takes up space |
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There are a total of |
Over 100 elements |
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An element... |
Cannot be broken down by ordinary means |
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The six most important elements are |
Sulfur, phosphorus, oxygen, nitrogen, carbon, and hydrogen |
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4 of the six elements make up 96% of living matter |
Carbon, oxygen, nitrogen, and hydrogen |
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A carbohydrate is made out of |
Carbon, hydrogen, and oxygen |
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The monomer for carbohydrates is |
Monosaccharides |
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A disaccharide is |
Two monosaccharides. Example:Lactose |
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If it ends in ose it is a |
Sugar |
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If it ends in ase it is an |
Enzyme |
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Lipids are the only things that |
Do not dissolve in water |
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Function of lipids |
Energy storage Structural support Serve as reactants |
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Phospholipids |
Lipids that contain phosphate. Phospholipids are major components of the cell membrane |
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Steroids |
Lipids with four linked rings of carbon. (Cholesterol and hormones) |
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Monomer of lipids |
Fatty acids |
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Fatty acids can either be |
Saturated or unsaturated |
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Saturated fat |
Only have single bonds between carbons and max number of hydrogens |
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Unsaturated fat |
Have double carbon bonds and less room for hydrogen atoms |
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Protein |
Organic compounds composed of carbon, hydrogen, and nitrogen atoms |
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Proteins are |
The constructive materials for body parts like hair, skin, nails, and blood |
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Monomer for protein |
Amino acids |
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Enzymes |
Proteins that help control chemical reactions by acting as a catalyst |
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Catalyst |
Speed up reactions by lowering activation energy |
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Monomer for nucleic acid |
Nucleotides |
