Bio 150 - Lipids (Exam 1)
What are phospholipids composed of?
A phosphate group, a glycerol, and fatty acids
Dr. Haxton told one of his students, "To move in the bloodstream, fats need the help of phospholipids." Why is this?
Nonpolar molecules aren't compatible with water
Which of these is NOT a lipid? steroids RNA wax cholesterol phospholipid
RNA
What do DNA, proteins, and fats have in common?
They contain carbonyl groups
A function of cholesterol that does not harm health is its role _____.
as a component of animal cell membranes
Triglycerides vary with respect to the number of ...
carbon atoms in the tails and double bonds in the tails
In fat synthesis, ________ and fatty acids combine to make fats plus ________.
glycerol; water
In the reaction that builds a fat,________ groups react with ________ groups.
hydroxyl; carboxyl
What do fats, steroids, and waxes have in common?
low solubility in water
A food company hydrogenated a barrel of fat. The treatment ...
made the fat less fluid
Which of these is rich in unsaturated fats? butter olive oil lard a fat that is solid at room temperature beef fat
olive oil
What does hydrogenation of a fat do?
removes double bonds
The presence of many C-C and C-H bonds causes fats to be ...
rich in energy and insoluble in water
The most unsaturated fats have ...
the most double bonds