World of Chem: Food March 9 – Midterm 1
Midterm 1 Answers
Vitamin C may be helpful in the prevention of heart disease because it: prevents the
oxidation of LDL cholesterol
Which of the following statements best describe one of the differences between the fat
substitute Olestra and natural fats?
o Olestra is derived from natural fats by replacing glucose by sucrose
o In Olestra, all the fatty acid chains are unsaturated
o Olestra contains more (and shorter) fatty acid chains in its structure than do
o In Olestra, the fatty acid chains are all more than 12 carbons long
o Olestra is derived from natural fats by replacing some of the fatty acids by longer
Which of the following is/are the health concerns associated with the use of the fat
o Vitamin K formed to excess
o Increased risk of colon cancer
o Increased risk of heart disease
o Vitamin A deficiency
Which of the following food components are thought to play a significant role in the
creation of cataracts?
o Certain vitamins
o Monosaturated fats
o Saturated fats
o Trans fats
Which of the following vitamins is potentially the most toxic to humans?
o B1 (thiamin)
o B2 (riboflavin)
o B3 (niacin)
The process of protein folding is becoming one of the most important topics in
Which of the following pairs are considered to deliver all the required amino acids?
o None on this list
o Rice and corn
o Rice and beans
o Wheat and rice
o Potatoes and rice World of Chem: Food March 9 – Midterm 1
The white of an egg is about 90% water.
James Lind carried out a human trial that showed citrus fruits to be effective in
Some studies have shown an inverse relationship between fish consumption and
Inositol pentakisphosphate in beans interferes with the activity of enzymes needed for
Which one of these statements concerning the role of fiber in the diet is correct?
o Cellulose is one of the main components of fiber
o Fiber is stored in the body as energy
o Fiber may cause cancer of the colon by producing cancer-causing agents on
o Lack of dietary fiber is associated with the nutritional disease Kwashiorkor
o Fiber is quickly converted into gas in the lower bowel.
Beef contains more saturated fats than unsaturated by a ratio of about 16/1
Which of the following is correct?
o No human studies have yet been carried out to investigate the effect of lowering
blood levels of homocysteine