Unit 2

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Major Elements

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Biology

25 Terms

1

Major Elements

Naturally occurring elements in the body that make up the majority of its composition, including oxygen, carbon, hydrogen, and nitrogen.

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2

Essential Elements

Naturally occurring elements in the body that are required for proper functioning, including calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium.

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3

Trace Elements

Elements that are present in very small amounts in the body but still play important roles, including copper, zinc, iodine, and iron.

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4

Cofactor

A substance that is required for the proper functioning of enzymes.

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5

Polyunsaturated

A type of plant fat that contains multiple double bonds.

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6

Monounsaturated

A type of plant fat that contains one double bond.

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7

Dietary Fiber

A type of carbohydrate that cannot be digested by the body and helps promote feelings of fullness.

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8

Protein-rich

A food or substance that contains a high amount of protein.

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9

BHT

A preservative used to extend the shelf life of food.

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10

Serving Size

The recommended portion size of a food or beverage.

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11

Calories

A unit of measurement for energy provided by food.

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12

Trans fat

A type of fat that is artificially created and considered toxic.

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13

Radioisotope

An isotope of an element that has an unstable nucleus.

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14

Radioactive decay

The process by which an unstable nucleus rearranges itself.

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15

Electronegativity

The tendency of an atom to attract electrons.

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16

Partial charges

Charges that are not strong enough to allow electricity to pass through.

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17

Ionic bonds

Bonds formed through the transfer of electrons between two unstable atoms.

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18

pH effect on the environment

The impact of acidity or alkalinity on natural phenomena such as acid rain and coral reefs.

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19

Carbon

An essential element of life that forms the basis of organic compounds.

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20

Bonds

The connections formed between atoms, including covalent bonds, double bonds, and single bonds.

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21

Hydrocarbon properties

Characteristics of hydrocarbons, including length, double bonds, branching, and rings.

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22

Methane

A hydrocarbon with the chemical formula CH4.

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23

Ethane

A hydrocarbon with the chemical formula C2H6.

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24

Ethene

A hydrocarbon with the chemical formula C2H4.

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25

Methyl

A common functional group attached to carbon, denoted by R-CH3.

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