Chronic disease Flashcards
(186 cards)
What is the most abundant organic molecule in nature?
Carbohydrates
Name the main functions of carbohydrates
- Immune functions
- Intercellular communication
- Structural components
- Energy source
- Energy storage `
What is the simplest form of sugar
Monosaccharides (1 sugar unit)
How many sugar units do oligosaccharides contain?
3 to 10 sugar units
What is the generic name of a monosaccharide with 3 carbons. State an example too
Generic name: triose
Example: glyceraldehyde
What are the most common functional groups in monosaccharides
- Aldoses (-ose) (aldehyde function)
- Ketoses (-ulose) (ketone function)
Define isomers
Compounds that have the same chemical formula but different structures
Epimers
Carbohydrate isomers that differ in configuration around only one specific carbon atom
What are enantiomers?
Pair of structures that are mirror image of each other
What are the most naturally occurring sugars (D or L isomers)?
- D isomers
Most monosaccharide with 5 or more carbon atoms from a ring structure. TRUE OR FALSE
TRUE
What is a pyranose ring
A cyclic monosaccharide with 5 carbon atoms and 1 oxygen atom
What is a furanose ring
A cyclic monosaccharide with 4 carbon atoms and 1 oxygen atom
Cyclization creates an anomeric carbon centre. TRUE OR FALSE
TRUE
What is an anomeric carbon atom?
A carbon that is derived from the carbonyl carbon compound of the open - chain form of the carbohydrate molecule
Name some features of fructose
- it is sweeter than glucose
- source: fruits, vegetables and honey
What is glucose the primary energy source for?
- the brain
- cells with few or no mitochondria
- essential in exercising muslce
Where can glucose be obtained?
Diet
Degradation of glycogen
Gluconeogenesis
What is the feature of galactose and where can it be found
- less sweet than glucose
- source: dairy products
What does maltose consist of?
Glucose + Glucose
Galactose + glucose =
Lactose
Glucose + ___ = sucrose
Fructose
What is the bond between sugars called?
- Glycosidic bond
How are glycosidic bonds formed
Through condensation reactions