Fatty acids are either essential or non-essential. What makes ...

[aabwk4]

Fatty acids are either essential or non-essential. What makes some fatty acids essential?
 
  A) They are only found in fish.
  B) They are saturated fatty acids.
  C) They cannot be synthesized by the body.
  D) They are found only in animal products.

Question 2

Lipids provide the best source of
 
  a. essential amino acids.
  b. body-building materials.
  c. glucose for the brain.
  d. dense energy for the body.

[emilymalinowski12]

Answer to Question 1

C

Answer to Question 2

D
Because lipids provide more energy per gram than any other nutrient (lipids provide 9 kcals per gram; protein and carbohydrate provide 4 kcals per gram and alcohol provides 7 kcals per gram), they are the best source of dense energy for the body. They do provide some body-building ma-terials: phospholipids are an important part of the structure of cell membranes. However proteins and minerals probably contribute more than lipids to building body structure. Lipids cannot be converted to glucose in the body.

[aabwk4]

Excellent

[emsimon14]

Wow, this really help