Lipids and Phospholipids Flashcards
Triglycerides are…
non-polar hydrophobic molecules and describe the molecular structure of triglycerides with reference to fatty acids (saturated and unsaturated), glycerol and the formation of ester bonds
Phospholipids have a ….. and a …..
hydrophilic (polar) phosphate head and hydrophobic (non-polar) fatty acid tail
Any lipid which contains a single double bond is…
unsaturated
If it contains more than one double bond it is…
polyunsaturated
Water molecules are…
dipolar
Are carbon chains charged?
No
Are lipids (not polar) soluble in water (polar)?
No
Lipids are good at thermal insulation because…
fat stored under the skin is a very good thermal insulator
Lipids are good at electrical insulation because…
cells which surround nerve cells (Schwann Cells) have a lot of lipids to insulate against the electrical charge in nerve cells
Lipids are good for steroid synthesis because…
lipids are the starting molecule for such steroids
What is better for short term energy storage molecule, lipids or carbohydrates?
Lipids
The Carbon-Hydrogen (C-H) bond is a high/low energy bond
high
What has more C-H bonds, lipids or carbohydrates?
Lipids
______ contain a lot more high energy ___ bonds per mass than _____________
lipids, C-H, carbohydrates
