Topic 1- Bio molecules key terms

Question 1

What are the key molecules that are required to build structures that enable organisms to function?

Answer 1

Carbohydrates
Proteins
Lipids
Nucleic Acids
Water

Question 2

What are monomers?

Answer 2

smaller units from which larger molecules are made

Question 3

Define polymer

Answer 3

molecules made from a large number of monomers joined together in a chain

Question 4

Name the 4 organic (contain carbon and hydrogen) compounds

Answer 4

-Carbohydrates
-Proteins
-Nucleic acids
-Lipids

Question 5

Why are carbon compounds important for organic compounds

Answer 5

-Each carbon atom can form four covalent bonds – this makes the compounds very stable (covalent bonds require a lot of energy to break)
-Carbon atoms can form covalent bonds with oxygen, nitrogen and sulfur
-Carbon atoms can bond to form straight chains, branched chains or rings

Question 6

Define polymerisation

Answer 6

monomers that bond with many repeating subunits to form large molecules polymers

Question 7

Define macromolecules

Answer 7

very large molecule that have a very high molecular mass

Question 8

Why re not all macromolecules polymers?

Answer 8

the subunits of polymers have to be the same repeating units