biological molecules Flashcards
What is an organic substance?
An organic substance is a molecule that contains carbon and at least one other element.
What are isomers?
Isomers are molecules which have the same molecular formula but a different arrangement of atoms.
explain the structure of Beta glucose
has one OH group on the same side as the oxygen, and one OH group on the opposite side to the oxygen.
Fructose structure
is the only monosaccharide that we need to know that has four carbons and one oxygen atom in its main ring structure.
Galactose structure
has both OH groups on the same side as the oxygen.
Alpha glucose strucure
has both OH groups on the opposite side to the oxygen.
what is a monosaccharide
a monomer witch a carbohydrate is made of
what is maltose made of
glucose + glucose
what is sucrose made of
glucose + fructose
Lactose is made of ?
Glucose + galactose
What is formed by glucose + glucose
Maltose
When two monosaccharides bond through a condensation reaction, we call the resulting molecule a…
disaccharide
what is the type of bond between monosaccharides
glycosidic bonds
how to name a bond between charbohydrates
(alpha/ beta) carbon on left + carbon on right
type of chain formed by beta 1,4 bonds
straight chain
type of chain formed by alpha 1,4 bonds
coiled chain
The rigidity of a plant cell wall is made up of …
long, straight, parallel chains, with hydrogen bonds between them.
So microfibrils are the smaller threads, made up of many polysaccharide chains.
steps for a Benedict’s test?
Grind sample with water,
Add the same volume of Benedict’s reagent,
Heat.
are all monosaccharides detected by benidicts reagant
yes
