BIO 1002 Exam 4 Pomarico LSU Latest
(2026/27) Comprehensive Questions and
Answers A+ Graded
Nutrition in all organisms involves 4 main steps:
1. Acquisition of nutrients
2. Digestion, if required
3. Distribution of nutrients throughout the body
4. Synthesis of molecules for the organism's body
Animal cells require a ________________ supply of energy
Continuous
calories
-How nutrient energy is measured
-Amount of energy needed to raise the temperature of 1 gram of water by 1
degree C.
Calories
,-How food energy content is measured
-1 Calorie = 1 kilocalorie (1,000 calories)
5 Major Categories of animal nutrients
1. Lipids
2. Carbohydrates
3. Proteins
4. Minerals
5. Vitamins
3 Types of Lipids
1. Fats
2. Phospholipids
3. Cholesterol
_____________ provide more energy/gram than any other nutrient source
Lipids
-Fat (9 Calories/gram)
-Cholesterol (4 Calories/gram)
, Advantages of storing our "extra" Calories as fat:
1. More calories with less weight (3600 Calories/gram)
2. Fats are hydrophobic and do not cause accumulation of water
3. Functions as insulation because fat conducts less heat
4. Protective padding around important organs
Fats supply:
1. Certain hormones
2. Cell components (membranes)
3. Nerve cell coverings
Essential Fatty Acids
Fats that cannot be synthesized by animals and have to be obtained in our diet.
-Ex: linoleic acid in humans
Types of Carbohydrates
1. Sugars
2. Starches
3. Cellulose
(2026/27) Comprehensive Questions and
Answers A+ Graded
Nutrition in all organisms involves 4 main steps:
1. Acquisition of nutrients
2. Digestion, if required
3. Distribution of nutrients throughout the body
4. Synthesis of molecules for the organism's body
Animal cells require a ________________ supply of energy
Continuous
calories
-How nutrient energy is measured
-Amount of energy needed to raise the temperature of 1 gram of water by 1
degree C.
Calories
,-How food energy content is measured
-1 Calorie = 1 kilocalorie (1,000 calories)
5 Major Categories of animal nutrients
1. Lipids
2. Carbohydrates
3. Proteins
4. Minerals
5. Vitamins
3 Types of Lipids
1. Fats
2. Phospholipids
3. Cholesterol
_____________ provide more energy/gram than any other nutrient source
Lipids
-Fat (9 Calories/gram)
-Cholesterol (4 Calories/gram)
, Advantages of storing our "extra" Calories as fat:
1. More calories with less weight (3600 Calories/gram)
2. Fats are hydrophobic and do not cause accumulation of water
3. Functions as insulation because fat conducts less heat
4. Protective padding around important organs
Fats supply:
1. Certain hormones
2. Cell components (membranes)
3. Nerve cell coverings
Essential Fatty Acids
Fats that cannot be synthesized by animals and have to be obtained in our diet.
-Ex: linoleic acid in humans
Types of Carbohydrates
1. Sugars
2. Starches
3. Cellulose
