Biological Molecules - Molecules of Life

Question 1

What is the theory of evolution

Answer 1

all organisms on earth have descended from one or a few common ancestors, and they have changed and diversified over time

Question 2

What do all organisms on Earth share

Answer 2

All contain the same carbon-based compounds that interact in a similar way

Question 3

What do these similarities suggest

Answer 3

Suggest that animals and plants have a common ancestor, this provides indirect evidence for evolution

Question 4

Give some examples of polymers

Answer 4

carbohydrates, proteins and nucleic acids

Question 5

What is a polymer

Answer 5

They are large complex molecules made up of long chains of monomers joined together

Question 6

What is a monomer

Answer 6

They are small basic molecular units that can form a polymer

Question 7

Give some examples of monomers

Answer 7

monosaccharides, amino acids and nucleotides

Question 8

How are polymers formed

Answer 8

They are formed from their monomers by condensation reactions and they release a molecule of water.

Question 9

What type of reaction breaks down polymers into its monomers

Answer 9

Hydrolysis reaction breaks the chemical bond between monomers using a molecule of water