bio molecules Flashcards
what is a condensation reaction
reaction that occurs when two molecules are joined together with the removal of water
what is a hydrogen bond
weak interaction that occurs when two molecules are joined together with the removal of water
what is a hydrolysis reaction
reaction that occurs when a molecule is split into two smaller molecules with the addition of water
what is a monomer
a small molecule which binds to many other identical molecules to form a polymer
what is a polymer
a large molecule made from many smaller molecules called monomers.
what elements are in carbohydrates
C H O
what elements are in proteins
C H O N S
what elements are nucleic acids
C H O N P
describe the structure of a water molecule
2 hydrogen atoms covalently bonded to one oxygen atom
what are the charges of a water molecule
oxygen- slightly negatively charged
hydrogen- slightly positively charged
why is water polar
because oxygen is slightly negative
because hydrogen is slightly positive
water is a liquid at room temperature, what does this allow
provides habitats for living things in rivers, lakes, seas
form a major component for tissues in organism
provide a reaction medium for chemical reactions
provide a transport medium - blood
what is high latent heat of vaporisation
when water evaporated, heat energy/ latent heat of vaporisation, helps the molecules to break away from each other to be a gas.
is a lot of energy required to evaporate water
a lot of energy is required to evaporate water as they have hydrogen bonds that need energy to break.
what does the latent heat of vaporisation allow for organisms
cooling mechanism- sweating can evaporate to cool organism
what is a reactant
