The modern human's genes date back to a time when ____
a. the food supply was much more varied than it is today
b. efficient processing of foods eaten was not required
c. the body's metabolism was faster than it is now
d. daily physical exertion was necessary for survival
e. food was processed based on the "thrifty gene," which no longer applies today
d
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Exposure to low levels of lead in young children can cause:
A) reduced intelligence. B) rapid growth of the long bones. C) poor classroom performance. D) All of the above E) a, c
Modified-atmosphere packaging (MAP) usually changes the air around the food by reducing oxygen and increasing _____ to extend the shelf life of the food
a. carbon monoxide b. oxygen c. carbon dioxide d. ethylene gas
Food energy is commonly expressed in kcalories and in ____
A) ?kilojoules B) ?thermal units C) ?fluence of energy D) ?newtons
Alpha-linolenic acid is found in high amounts in the brain
a. True b. False Indicate whether the statement is true or false