Vocab #2 ch 6

Question 1

Building block of matter; contains subatomic particles- neutrons, protons, electrons.

Answer 1

Atom

Question 2

Center of a atom; contains neutrons & protons. In eukaryotic cells the central membrane bound organelles that manages cellular functions.

Answer 2

Nucleus

Question 3

positively charged particle in atoms nucleus.

Answer 3

Proton

Question 4

negatively charged particle that occupies space around a atoms nucleus.

Answer 4

Electron

Question 4

particle with out charge in a atoms nucleus.

Answer 4

Neutron

Question 4

two or more atoms of the same element having different numbers of neutrons.

Answer 4

Isotope

Question 5

Pure substance composed of only one type of atom; can not be broken down into another substance by physical or chemical means.

Answer 5

Element

Question 6

pure substance with unique properties; formed when two or more different elements combine.

Answer 6

Compound

Question 7

atom that is negatively or positively charged because it has lost one or more electrons.

Answer 7

Ion

Question 8

substance that exists before a chemical reaction starts; located on the left side of the arrow in a chemical equation.

Answer 8

Reactant

Question 9

substance formed by chemical reaction; located on the right side of the arrow in a chemical equation.

Answer 9

Product

Question 10

substance that speeds up a chemical reaction by reducing the activation energy.

Answer 10

Catalyst

Question 11

minimum amount of energy needed for reactions to form products in a chemical reaction.

Answer 11

Activation energy

Question 12

protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction.

Answer 12

Enzyme

Question 13

Reactant to which the enzyme binds.

Answer 13

Substrate

Question 14

Specific place where a substrate bind on enzyme.

Answer 14

Active site

Question 15

Substance in which another substance is dissolved.

Answer 15

Solvent

Question 16

Substance dissolved in a solvent.

Answer 16

Solute

Question 17

Mixture that can react with a acid or base to maintain the PH within a specific range.

Answer 17

Buffer

Question 18

Organic compound containing carbon, hydrogen, and oxygen in a ratio of one oxygen and two hydrogen atoms for each carbon atom.

Answer 18

Carbohydrate

Question 19

Hydrophobic biological molecule composed mostly of hydrogen and carbon, fats, oils and waxes are lipids.

Answer 19

Lipid

Question 20

Organic compounds made of animo acids joined by peptide bounds; primary building bl blocks of organisms

Answer 20

Protein

Question 21

Complex macro molecule that stores and communicates genetic information

Answer 21

Nucleic acid