HBIO-202 MIDTERM 1 EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS GRADED A++
What is the number 1 driver for food choice?
Taste
What drives food choices?
Taste, culture, social trends, cost, time, convenience, habits and emotions
Nutrients
Chemical compounds needed for regulating body functions, repairing body tissues,
promoting growth, and obtaining energy
Six Classes of Nutrients
Carbohydrates, Fats, Protein, Vitamins, Minerals, and Water
Carbohydrates
Supply glucose, a major energy source
Fats
another major fuel source, cushion organs and insulate body to maintain body
temperature
Proteins
Provide energy but are better suited for:
-growth and maintenance of muscle, tissues, organs
-making hormones, enzymes, healthy immune system
-transporting other nutrients
,What does protein contain that none of the other macronutrients have?
Nitrogen
Which essential nutrient does most calories/energy come from?
Carbohydrates
What are kilocalories?
The measurement of energy in foods. Commonly referred to as calories.
What does 1kcal equal?
The energy required to raise 1kg of water by 1 degree Celsius
Metabolism
chemical process where body breaks down food to release energy (calories)
How many calories per gram are in fats?
9 calories per gram
How many calories per gram are in carbs?
4 calories per gram
How many calories per gram are in protein?
4 calories per gram
What is Nutrition?
The science that studies how nutrients and compounds in foods nourish and affect body
functions and health
What does good nutrition do?
Reduces risk of chronic disease and helps manage body weight
What are the leading causes of death in the US?
Heart disease, cancer, stroke, diabetes
, Macronutrients
carbohydrates, proteins, and fats
What do macronutrients provide?
energy in calories
Micronutrients
vitamins and minerals
What do micronutrients do?
Help regulate body processes
Is water considered a macronutrient?
No
What does water do?
Part of fluid medium inside and outside cells, aids chemical reactions, helps maintain
body temp, transport nutrients and oxygen to cells, removes waste products, lubricant
for joints, eyes, mouth, intestinal tract, protective cushion for organs
Organic
contains carbon and hydrogen
Inorganic
Does not contain carbon
Enzymes
Proteins that speed up chemical reactions
Phytochemicals
nonnutritive compounds in plant foods that may play a role in fighting many diseases
Fiber
ANSWERS WITH COMPLETE SOLUTIONS GRADED A++
What is the number 1 driver for food choice?
Taste
What drives food choices?
Taste, culture, social trends, cost, time, convenience, habits and emotions
Nutrients
Chemical compounds needed for regulating body functions, repairing body tissues,
promoting growth, and obtaining energy
Six Classes of Nutrients
Carbohydrates, Fats, Protein, Vitamins, Minerals, and Water
Carbohydrates
Supply glucose, a major energy source
Fats
another major fuel source, cushion organs and insulate body to maintain body
temperature
Proteins
Provide energy but are better suited for:
-growth and maintenance of muscle, tissues, organs
-making hormones, enzymes, healthy immune system
-transporting other nutrients
,What does protein contain that none of the other macronutrients have?
Nitrogen
Which essential nutrient does most calories/energy come from?
Carbohydrates
What are kilocalories?
The measurement of energy in foods. Commonly referred to as calories.
What does 1kcal equal?
The energy required to raise 1kg of water by 1 degree Celsius
Metabolism
chemical process where body breaks down food to release energy (calories)
How many calories per gram are in fats?
9 calories per gram
How many calories per gram are in carbs?
4 calories per gram
How many calories per gram are in protein?
4 calories per gram
What is Nutrition?
The science that studies how nutrients and compounds in foods nourish and affect body
functions and health
What does good nutrition do?
Reduces risk of chronic disease and helps manage body weight
What are the leading causes of death in the US?
Heart disease, cancer, stroke, diabetes
, Macronutrients
carbohydrates, proteins, and fats
What do macronutrients provide?
energy in calories
Micronutrients
vitamins and minerals
What do micronutrients do?
Help regulate body processes
Is water considered a macronutrient?
No
What does water do?
Part of fluid medium inside and outside cells, aids chemical reactions, helps maintain
body temp, transport nutrients and oxygen to cells, removes waste products, lubricant
for joints, eyes, mouth, intestinal tract, protective cushion for organs
Organic
contains carbon and hydrogen
Inorganic
Does not contain carbon
Enzymes
Proteins that speed up chemical reactions
Phytochemicals
nonnutritive compounds in plant foods that may play a role in fighting many diseases
Fiber
