Sierra analyzed her diet composition and found that its amino acid composition was in proportion to

Sierra analyzed her diet composition and found that its amino acid composition was in proportion to her body’s need for them. How would you characterize the protein in her diet?

A. Complete.   

B. Nonessential.   

C. Trans.   

D. Essential.   

E. Conditionally essential.   Reset Selection

Question 6 of 60   1.667 Points
Aaron read that consumption of antioxidants might reduce the risk of cancer. Which of the following would be regarded as an antioxidant?

A. Niacin.   

B. Riboflavin.   

C. Beta carotene.   

D. Thiamin.   

E. Carbohydrate.   Reset Selection

Part 3 of 18 -
Question 7 of 60   1.667 Points
Which of the following breathing systems would be considered an evagination?

A. Tracheoles.   

B. Skin.   

C. Book lungs.   

D. Bird lungs.   

E. Gills.