What is the type of cattle that serves as a major source of beef in the United States? These are male cattle that are castrated when young so that they will gain weight quickly.
A. bulls
B. heifers
C. cows
D. steers
Answer: D
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A primary function of the digestive system is the ________.
A. breakdown of food into nutrients B. transmission of nervous impulses C. production of red blood cells D. destruction of toxic metabolic by-products
Which of the following carbohydrates is made from two glucose units joined together?
A) sucrose B) lactose C) galactose D) maltose
Which of the following statements is true?
A. People can have energy needs that are higher or lower than the Estimated Energy Requirement. B. People who consume 95% of the RDA for iron regularly have a high risk of developing an iron deficiency. C. People who consume less than the Tolerable Upper Intake Level of a nutrient have a high risk of developing the nutrient's toxicity disorder. D. Nutrition scientists have established RDAs for all essential nutrients.