Component 1: Biological Compounds. 10/09/15

Question 1

Composition of the human body by molecule

Answer 1

Water: 64% 
Protein: 20%
Fat: 10%
Minerals: 5% 
Carbon dioxide: 1%

Question 2

Atom

Answer 2

Smallest unit of matter that can take part in a chemical reaction.

Question 3

Proton

Answer 3

A positively charged particle found in the nucleus of an atom.

Question 4

Neutron

Answer 4

A particle found in the nucleus of an atom. It has the same mass as a proton but no charge.

Question 5

Electron

Answer 5

A negatively charged particle with very little mass that orbits around the nucleus.

Question 6

Element

Answer 6

A substance that cannot be split chemically into simpler substances.

Question 7

Molecule

Answer 7

Smallest arrangement of an element or compound that an exist on its own. One molecule is made of a group of atoms held together by bonds.

Question 8

Organic compound

Answer 8

Compound that contain carbon (except carbon dioxide and monoxide and carbonates.)

Question 9

Inorganic compound

Answer 9

Compounds that do not contain carbon (except carbon dioxide and monoxide and carbonates)

Question 10

Ion

Answer 10

Atom or group of atoms that are either positively or negatively charged.

Question 11

Polymer

Answer 11

Very long chain molecule made up of many monomers

Question 12

Compound

Answer 12

Chemical substances made up of two or more elements bonded together- cannot be separated physically.

Question 13

Metabolism

Answer 13

Sum of chemical reactions inside the body

Question 14

Mg2+

Answer 14

Component of chlorophyll molecule

Question 15

Fe3+

Answer 15

Component of haemoglobin in the red blood cells

Question 16

Po4 3-

Answer 16

Component of membranes 
Phospholipids 
ATP 
Nucleotides 
DNA

Question 17

Ca2+

Answer 17

Deposited in bones and teeth
Helps cell walls stick together
Synapse transmission

Question 18

Composition of the human body by element

Answer 18

Oxygen: 62%
Carbon: 23%
Hydrogen: 10%
Nitrogen: 3%