Biology Vocab - Chapter 6

studied byStudied by 96 people
5.0(3)
get a hint
hint

acid

1 / 38

Tags & Description

Studying Progress

0%
New cards
39
Still learning
0
Almost done
0
Mastered
0
39 Terms
1
New cards

acid

substance that releases hydrogen ions (H+) when dissolved in water, an acidic solution has a pH less than 7

New cards
2
New cards

activation energy

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

New cards
3
New cards

active site

specific place where a substrate binds on an enzyme

New cards
4
New cards

amino acid

carbon compound joined by peptide bonds; building block of proteins

New cards
5
New cards

atom

building block of matter ; contains subatomic particles - neutrons, protons, and electron

New cards
6
New cards

base

substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7

New cards
7
New cards

buffer

mixture that can react w/ an acid or a base to maintain the pH within a specific range

New cards
8
New cards

carbohydrate

organic compound containing carbon, hydrogen, and oxygen in a ration of one oxygen and 2 hydrogen atoms for each carbon atom

New cards
9
New cards

catalyst

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

New cards
10
New cards

chemical reaction

energy-requiring process by which atom or group of atoms in substances are changed into different substances

New cards
11
New cards

compound

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

New cards
12
New cards

covalent bond

type of chemical bond formed when atoms share electrons

New cards
13
New cards

electron

negatively charged particle that occupies space around an atoms nucleus

New cards
14
New cards

element

pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means

New cards
15
New cards

enzyme

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

New cards
16
New cards

hydrogen bond

weak electrostatic bond formed by the attraction of opposite charges between a hydrogen atom and an oxygen, fluorine, or nitrogen atom

New cards
17
New cards

ion

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

New cards
18
New cards

ionic bond

electrical attraction between two oppositely charged atoms or groups of atoms

New cards
19
New cards

isotope

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

New cards
20
New cards

lipid

hydrophobic biological molecule composed mostly of carbon and hydrogen; hats, oils and waxes are ______.

New cards
21
New cards

macromolecule

large molecule formed by joining a smaller organic molecules together

New cards
22
New cards

mixture

combination of 2 or more different substances in which each substance keeps its individual characteristics; can have a uniform composition (homogeneous) or have distinct areas of substances (heterogeneous)

New cards
23
New cards

molecule

compound whose atoms are held together by covalent bonds

New cards
24
New cards

neutron

particle without a change in an atoms nucleus

New cards
25
New cards

nucleic acid

complex macromolecule that stores and communicate genetic information

New cards
26
New cards

nucleotide

a subunit of nucleic acid formed from a simple sugar, a phosphate group, and a nitrogenous base

New cards
27
New cards

nucleus

center of an atom; contains neutrons and protons. in eukaryotic cells, the central membrane-bound organelle that manages cellular functions and contains DNA

New cards
28
New cards

pH

measure of the concentration of hydrogen ions (H+) in a solution

New cards
29
New cards

polar molecule

molecule with oppositely charged regions

New cards
30
New cards

polymer

large molecule formed from smaller repeating units of identical or nearly identical, compounds linked by covalent bonds

New cards
31
New cards

product

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

New cards
32
New cards

protein

organic compound made of amino acids joined by peptide bond; primary building block of organisms

New cards
33
New cards

proton

positively charged particle in an atoms nucleus

New cards
34
New cards

reactant

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

New cards
35
New cards

solute

substance dissolved in a solvent

New cards
36
New cards

solution

another name for a homogeneous mixture

New cards
37
New cards

solvent

substance in which another substance is dissolved

New cards
38
New cards

substrate

reactant to which an enzyme binds

New cards
39
New cards

van cler waals force

attractive forces between molecules

New cards

Explore top notes

note Note
studied byStudied by 27 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 1223 people
Updated ... ago
4.9 Stars(8)
note Note
studied byStudied by 7 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 241 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 10 people
Updated ... ago
4.0 Stars(1)
note Note
studied byStudied by 24 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 3 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 10520 people
Updated ... ago
4.8 Stars(79)

Explore top flashcards

flashcards Flashcard30 terms
studied byStudied by 11 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard70 terms
studied byStudied by 7 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard87 terms
studied byStudied by 13 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard59 terms
studied byStudied by 7 people
Updated ... ago
5.0 Stars(2)
flashcards Flashcard33 terms
studied byStudied by 55 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard92 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard50 terms
studied byStudied by 2 people
Updated ... ago
4.0 Stars(1)
flashcards Flashcard79 terms
studied byStudied by 84 people
Updated ... ago
5.0 Stars(2)