Lipids And Membranes Flashcards
What is the key function of carbohydrates?
Source of enregy
Name a monomer for the carbohydrates
Monosaccharides
Give a exemple of a monosaccharide
Glucose or fructose
Give two exemple of polymers of carbohydrates
-dissacarides
-polysaccarides
Why is dissacarides a polymer?
Because it combines with an hydroxyl group and that releases water molecules to form covalent bonds
What is an exemple of a dissacarides?
Lactose
Why is lactose a polymer and not a monomer?
Because its the combination of glucose and fructose
What is a polysaccarides?
Long chain of monosaccarides linked by glycosidic bonds
Where carbohydrates are located in the eukaryotic cell?
Majorly in the plasma membrane attached to a protein or to a lipid
In the plant cell where is the cellular location of the carbohydrates?
Cell wall
What is the key function of lipids
-building blocks of many hormones
-important constituent of the cell membrane
What are the two most important monomers of lipids?
-Glycerol
-fatty acids
Name 4 polymers of lipids
-Tryglecerides
-phospholipids
-waxes
-steroids
Where is located the lipid in the cell?
Cellular membrane
What are the components of s trygleceride?
Glycerol + 3 fatty acids
What are the main components of phospholipids?
-glycerol
-2 fatty acids
-phosphate
True or false? fatty acids can interact with water
False
What is a saturated fatty acid?
A single bond between carbons and hydrocarbons
Give an exemple of a unsaturated fatty acid
Oils
What is the main difference between a saturated and an unsaturated fatty acid?
Saturated = single bond
Unsaturated = double bond
Unsaturated acid can be cis or trans. What does it indicates?
The configuration of the molecule around the double bond
What is an exemple of a steroids
-cholesterol
-testosterone
-progesterone
Where are the steroids found?
In the plasma membrane of the cell, within the phospholipids bilayer
What are exemple of omega fatty acids?
Salmon, tuna
