what are the functions of lipids?
S - storage of energy
H - hormonal roles - steroids
I - insulation - thermal
P - protection of organs
S - structural roles - cholesterol
what are unsaturated fatty acids?
they are double bonds and are generally liquid at room temperature (plant oils)
what are saturated fatty acids?
they arent double b
what are some differences between trans and cis fats?
cis:
H atoms same side
double bond - kink
natural
good for health
trans:
H atoms different side
doesn’t create kink - linear chain
processed food
bad for health
what are some health risks?
high levels of cholesterol = atherosclerosis = coronary heart disease
cis fats raise HDL (decrease blood cholesterol)
saturated fats raise levels of LDL
trans fats raise levels of LDL while increasing blood cholesterol and lowering HDL
fats + cholesterol cant dissolve in blood - packed with proteins:
low density lipoproteins transport cholesterol from liver to body (bad)
high density lipoprotein scavenges excess cholesterol and returns it to the liver (good)