Which of the following food items is/are not a colloidal dispersion?
a. salad dressings
b. jam, gelatin, cheese, and butter
c. whipped egg white and whipped cream foams
d. marshmallows
e. all of the above are colloidal dispersions
Q. 2Food irradiation has been approved by the USDA.
Indicate whether the statement is true or false
Q. 3Hard water contains a greater concentration of calcium and magnesium compounds, whereas soft water has a higher _____ concentration.
a. sodium
b. potassium
c. chloride
d. copper
Q. 4During dialysis, _____.
a. the chemical composition of the dialysate does not affect the movement of solutes across the semipermeable membrane
b. bicarbonates are added to a dialysate for a person with acidosis
c. a substance will diffuse out of the blood when its concentration is higher in the dialysate than in the blood
d. the dialysate contains no urea or potassium
e. osmosis alone is an efficient process for removing fluids
Q. 5Some intentional food additives are known to cause adverse reactions in some people.
Indicate whether the statement is true or false
Q. 6Dennis Wilson is a 57-year-old chemical engineer who has had type 1 diabetes since he was 12 years old. He spent 34 years working in oil refineries, and he is a smoker. He is 5'11 tall and weighs 160 pounds. Over the past several years, he has experienced a gradual decline in kidney function. His GFR has declined to 27 mL/min per 1.73 m2.The likely cause of Mr. Wilson's chronic kidney disease is _____.
a. his history of type 1 diabetes
b. exposure to chemicals in the workplace
c. his history of smoking
d. his gender
e. his age
Q. 7A pressure cooker speeds up heating time by _____.
a. decreasing atmospheric pressure to five pounds
b. decreasing the boiling point by ten degrees
c. increasing atmospheric pressure to fifteen pounds
d. increasing the boiling point by twenty degrees
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