Biological Molecule Recap Flashcards
What is the definition of an atom ?
Single unit of matter composed of protons, neutrons and electrons.
What is the definition of molecule ?
Two or more atoms chemically bonded.
Definition of a compound.
Two or more different atoms chemically bonded.
Definition of a mixture.
Two or more different types of atom which are not chemically bonded.
Draw NH4+
In notes.
How are cations formed.
The loss of an electron to form at ion with a +1 charge.
How are anions formed ?
The gaining of one electron to form ions with a negative 1 (-1) charge.
What substances are in ionic compounds ?
A metal and a non metal gain or loose electrons to form charged ions.
What is hydrolysis.
The breaking down of a polymer using the addition of water.
Give a practical example of hydrolysis.
Polypeptides are hydrolysed into amino acids.
What is a condensation reaction ?
2 monomers are joined by the elimination of water from the molecule.
Give an example of a condensation reaction.
Forming a polypeptide from amino acids.
