Biochemistry

Question 1

Chemistry

Answer 1

change of molecular properties

Question 2

Biochemistry

Answer 2

study of the molecules that compose living organisms

Question 3

Metabolism

Answer 3

chemical reactions; inside or outside of the body using enzymes

Question 4

How many elements are on the periodic table

Answer 4

118 elements

Question 5

Human body consist of 24 elements, 6 major, 6 minor, 12 trace elements, 99% of our body consist of the 6 major elements which is …

Answer 5

(C) carbon
(H) hydrogen
(O) oxygen
(N) nitrogen
(Ca) calcium
(P) phosporus

Question 6

Proton

Answer 6

in the nucleus; positive charge

Question 7

Neutron

Answer 7

in the nucleus; no charge

Question 8

Electron

Answer 8

located in the electron shell(s) outside of nucleus; negative charge; electrons of higher energy are located farther away from the nucleus.

Question 9

Valence Electrons

Answer 9

electrons in the outermost shell

Question 10

how many shells can 2nd shell hold

Answer 10

2 electrons

Question 11

How many shells can 3rd and 4th shell hold?

Answer 11

8 electrons

Question 12

2 types of ions

Answer 12

1 negative, 1 positive

Question 13

Ionization

Answer 13

atom or molecule becomes an ion and becomes more stable.

Question 14

Electrolyte

Answer 14

is the materials that break down in water and become the electoral currents

Question 15

Covalent bonds

Answer 15

share valence electrons

Question 16

Double covalent bonds

Answer 16

share 2 valence bonds

Question 17

single covalent bond

Answer 17

shares 1 valence bond.

Question 18

polarized molecule

Answer 18

one single molecules has positive and negative properties.

Question 19

Polar covalent bond

Answer 19

covalent bond in polarized molecules

Question 20

Hydrogen bond

Answer 20

a bond between polarized molecules

Question 21

Water friendly material= dissolve in water=

Answer 21

Hydrophilic

Question 22

Not water friendly material= does not dissolve in water=

Answer 22

Hydrophobic

Question 23

Chemical Reaction

Answer 23

process in which a covalent . or ionic bond is formed or broken; expressed by a chemical equation
reactants–> (chemical reactions)–> product

Question 24

Decomposition

Answer 24

from large to small

Question 25

Synthesis

Answer 25

from small to large

Question 26

2 types of chemical reactions

Answer 26

chemical bond formed (Synthesis) and bond breaks down (Decomposition)

Question 27

Endergonic

Answer 27

energy enters

Question 28

Exergonic

Answer 28

energy exits/leaves

Question 29

Catabolism

Answer 29

exergonic (energy releasing) decomposition (large to small molecule)

Question 30

Anabolism

Answer 30

endergonic ( energy storing) synthesis (small to large molecule)

Question 31

Ways to make a chemical reaction faster

Answer 31

1. increase concentration of reactant.
2. temperature increases.
3. catalyst= helper = enzymes

Question 32

Oxidation

Answer 32

oxygen added; electrons removed; energy released.

Question 33

Reduction

Answer 33

oxygen removed; electrons acepted; energy stored.

Question 34

Define Metabolism

Answer 34

chemical reactions in inner/outer body with enzymes

Question 35

List major elements consituting a human body

Answer 35

carbon, hydrogen, oxygen, nitrogren, calcium, phosphurs

Question 36

A water molecule is formed by the __________ bond between 1 oxygen and 2 hydrogen atoms

Answer 36

polar covalent bond

Question 37

Water molecules cling to each other by the _______ bond.

Answer 37

hydrogen bond.