The scientific method consists of the following three basic steps:
A. making an observation, proposing a hypothesis, and collecting data.
B. making an observation, collecting data, and analyzing results.
C. proposing a hypothesis, analyzing results, and proposing a new hypothesis.
D. proposing an observation, making a hypothesis, and collecting results.
Q. 2Carbohydrates and proteins provide _____ calories per gram, while lipids provide _____ calories per gram.
A. 4, 4
B. 4, 7
C. 4, 9
D. 9, 4
Q. 3A calorie is
A. a unit of measure used to express the amount of energy in a food.
B. a number assigned to a food based on the number of ingredients in that food.
C. a marker of the glucose content of foods.
D. an indicator of how vitamin-rich a food is.
Q. 4Cellular energy is stored in the form of
A. adenosine triphosphate (ATP).
B. glucose.
C. vitamins.
D. minerals.
Q. 5Vitamins are classified according to
A. their solubility in water.
B. their alphabetical names.
C. the amounts required to sustain life.
Q. 6Water is essential for human well-being because
A. it serves as a solvent for chemical reactions within cells.
B. it enables nutrient transport around the body.
C. it helps to maintain body temperature.
D. All of the above
Q. 7One of the main functions of lipids in the human body is
A. energy production.
B. bone development and structure.
C. muscular strength and development.
D. None of the above
Q. 8The macronutrient class that is important for structural aspects of the body (such as muscle and bone) and also helps to maintain the immune system is
A. carbohydrate.
B. protein.
C. lipid.
D. fat.
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