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What are the 3 subatomic particles?

Proton
Neutron
Electron

1

Building blocks of matter

atom

2

Center of an atom

Nucleus

3

Positively charged particles

Protons

4

Particles with no charge

Neutrons

5

Negatively charged particles

Electrons

6

A pure substance that cannot be broken

Element

7

Atoms of the same element with a different number of neutrons

Isotopes

8

A pure substance formed when two or more different elements combine

Compound

9

A chemical bond that forms when electrons are shared

Covalent bonds

10

A compound in which the atoms are held together by covalent bonds

Molecule

11

An atom that has lost or gained more electrons

Ion

12

Electrical attraction between 2 oppositely charged atoms called ions

Ionic bond

13

Process by which atoms or groups of atoms is substances are reorganized into different substances

Chemical reaction

14

Starting substances of a reaction

Reactant

15

Substances formed during the reaction

Products

16

The minimum amount of energy needed for reactants to form products in a chemical reaction

Activation energy

17

A substance that lowers the activation energy needed to start a chemical reaction

Catalyst

18

The biological catalysts that speed up the rate of chemical reactions in biological processes

Enzymes

19

A weak interaction involving hydrogen

Hydrogen bond

20

A combination of 2 or more substances in which each keeps its individual characteristics

Mixture

21

Another name for a homogeneous mixture

Solution

22

A substance In which another substance is dissolved

Solvent

23

Substance thatS dissolved in the solvent

Solute

24

Substances that release hydrogen ions when dissolved in water

Acids

25

Release hydroxide ions when dissolved in water

Bases

26

The measure of concentration of H+ in a solution

pH

27

Mixtures that can react with acids or bases to keep the pH within a particular range

Buffers

28

Large molecules that are formed by joining smaller organic molecules together

Macromolecules

29

Molecules made of repeating units of identical or nearly identical compounds that are linked together by a series of covalent bonds

Polymers

30

Compounds composed of carbon, hydrogen, + oxygen in a ratio of 1 oxygen and 2 hydrogen atoms for each carbon atom

Carbohydrates

31

Molecules made mostly of carbon and hydrogen that make up fats, oils and waxes

Lipids

32

Compound made of amino acids

Protein

33

Small compounds made of carbon, nitrogen, oxygen, hydrogen

Amino acids

34

Complex macromolecules that store and transmit genetic information

Nucleic acid

35

Small repeating subunits composed of carbon, nitrogen, oxygen , phosphorus and hydrogen atoms

Nucleotides

36

An attraction between molecules of the same substance

Cohesion

37

water's cohesion causes...

Surface tension

38

Attraction between molecules of different substances

Adhesion

39

pH of 7 is...

Neutral

40

A pH of below 7 is

Acidic

41

A pH of above 7 is

Basic

42

The study of all compounds that contain carbon

Organic chemistry

43

Small units that join together to form polymers

Monomers

44

Carbohydrates main function

Source of energy

45

Another function of carbohydrates

Structural purposes

46

Word to describe sugars

Saccharides

47

One sugar molecule

Monosaccharide

48

Two sugar molecules

Disaccharide

49

Complex or many sugar molecules "many sugars"

Polysaccharide

50

Most important monosaccharide on earth

Glucose

51

Hundreds of sugars combined in a chain

Starch

52

Used in shells of crabs & lobsters for protection. A cellulose used for structure

Chitin

53

Lipids main function is to

Store energy

54

Lipids can be used for____ but it's not their main function

Being part of biological membranes

55

Lipids are formed when

Glycerol combines with fatty acid

56

Have at least one double bond

Unsaturated fat

57

Have no double bonds

Saturated fats

58

Form membrane or protective covering that surrounds cells

Phospholipids

59

Four levels of protein organization

1. Amino acid sequence.
2. Amino acids in a chain fold/twist.
3. Chain itself folds.
4. Chains are attracted to eachother

60

Energy is absorbed or released when

Chemical bonds form or are destroyed