Chapter 2: Chemistry Of Life Flashcards Preview

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Flashcards in Chapter 2: Chemistry Of Life Deck (17):
0

Matter

Has mass and occupies space

1

Elements

Pure substances that cannot be broken down

2

Compounds

Chemical combinations of two or more elements

3

CHON

Carbon
Hydrogen
Oxygen
Nitrogen

98.5% of the human body is made of these four elements

4

Homeostasis

Maintenance of a relatively stable internal environment despite changes in external conditions

5

Ionic bond

Chemical bonds where the electrons are not shared equally

6

Covalent bond

Chemical bond where the electrons are shared equally

7

Hydrogen bond

Chemical bond where a weak attraction between a slightly positive hydrogen and a slightly negative oxygen exists

8

Metabolism

The sum of all the chemical reactions in the body

9

Catabolism

Involves breaking down complex compounds into simpler ones

10

Anabolism

Involves building larger and more complex chemical molecules from smaller sub units

11

Water is a
...


Solvent, substances

Lubricant, clings to tissue and forms a lubricant film on membranes

Temperature, changes slowly

12

Carbohydrates

Body's main energy source they catabolize into simple sugars

13

Lipids

Store energy, provide structure to membrane, insulate nerves, serve as vitamins, cushion organs

14

ATP

Adenosine triphosphate

15

Triglycerides

Most abundant lipid

Breaks down into three fatty acid and glycerol

16

Proteins

Body's most abundant organic compounds


Catabolize into amino acids