quiz

Question 1

biochemistry

Answer 1

study of chemical reactions such as growth, reproduction and respiration

Question 2

what is the difference between organic and inorganic chemistry

Answer 2

organic deals with all matter that is or was living (plants and animals)
inorganic deals with matter that was never living

Question 3

what is matter?

Answer 3

anything that occupies space

Question 4

what are the 3 forms of matter

Answer 4

solid
liquid
gas

Question 5

what is sublimation

Answer 5

a solid passing into a gaseous state without melting

Question 6

what are elements

Answer 6

units of matter that cannot be broken down

Question 7

how many elements are there

Answer 7

92

Question 8

what elements are important for esthetics

Answer 8

carbon
oxygen
hydrogen
nitrogen
sulfur

Question 9

what is an atom

Answer 9

smallest complete unit of an element

Question 10

what are the 3 particles that atoms are made out of

Answer 10

protons
neutrons
electrons

Question 11

protons

Answer 11

have electrical charge

Question 12

neutrons

Answer 12

no electrical charge

Question 13

electrons

Answer 13

negative electrical charge

Question 14

what is a free electron

Answer 14

if another atom has a shortage of electrons the shortage one will make up for it

Question 15

what are molecules

Answer 15

2 or more of the same atoms joined together by a chemical bond

Question 16

how are molecules made

Answer 16

when unstable atoms combine by sharing electrons

Question 17

what are compounds

Answer 17

created when 2 different atoms are combined

Question 18

when does a chemical reaction happen

Answer 18

when 2 or more chemicals are mixed

Question 19

what is oxidation

Answer 19

substance loses an electron and oxygen is required

Question 20

what is reduction

Answer 20

when it gains an electron and oxygen is released

Question 21

what are ions

Answer 21

charged atoms involved in a chemical reaction

Question 22

what is an ionic bond

Answer 22

when positive and negative ions join

Question 23

what is a covalent bond

Answer 23

when atoms share electrons

Question 24

what is a chemical bond

Answer 24

a force that holds atoms together

Question 25

what are the 3 major biochemical compounds

Answer 25

proteins
carbohydrates
lipids

Question 26

what is the purpose of proteins

Answer 26

construct and renew the body

Question 27

what is the purpose of carbohydrates

Answer 27

used to store energy and play a role in metabolism

Question 28

what is the purpose of lipids

Answer 28

fill intercellular spaces in the skin

Question 29

what is an enzyme

Answer 29

material that dissolves and breaks down large molecules into smaller ones

Question 30

what is amino acid

Answer 30

compounds consisting of carbon, oxygen, and nitrogen

Question 31

what are the 2 types of amino acids

Answer 31

peptide bond and polypeptide chain

Question 32

what is a peptide bond

Answer 32

a bond uniting two amino acid groups

Question 33

what is a polypeptide chain

Answer 33

thousands of amino acids connected in a chain

Question 34

what is a monomer

Answer 34

building block molecules

Question 35

what are polymers

Answer 35

groups of monomers

Question 36

what are lipids made up of

Answer 36

carbon, hydrogen, and oxygen