BPK 110 Final Review UPDATED Actual Exam Questions and CORRECT Answers
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Course
BPK 110
Institution
BPK 110
BPK 110 Final Review UPDATED Actual
Exam Questions and CORRECT Answers
Differentiate between complete and incomplete proteins and provide typical sources of each.
- CORRECT ANSWER- Complete proteins: Have all nine essential amino acids.
Ex. Animal sources of protein (milk, meat)
Incomplete ...
BPK 110 Final Review UPDATED Actual
Exam Questions and CORRECT Answers
Differentiate between complete and incomplete proteins and provide typical sources of each.
- CORRECT ANSWER✔✔- Complete proteins: Have all nine essential amino acids.
Ex. Animal sources of protein (milk, meat)
Incomplete proteins: Lack one or more of the essential amino acids.
Ex. Plant sources of proteins (legumes)
Describe the molecular structure of proteins and the four levels of protein structure. Which
bonds are essential to each level of organization? - CORRECT ANSWER✔✔- Proteins are
composed of long chains of amino acids folded into very specific patterns. Amino acids are
linked together by peptide bonds to form polypeptides.
Secondary Structure: Alpha helices and beta-pleated sheets; hydrogen bonds between side
chains in the polypeptide chains.
Tertiary Structure: Disulphide, hydrogen bonds between side chains.
Quaternary Structure: The binding of two or more polypeptide chains together.
Define the key words: Denaturation, deamination, peptide bond, polypeptide. - CORRECT
ANSWER✔✔- Denaturation: Refers to the alteration of a protein's 3D structure (from heat,
acid, cooking, etc.)
Deamination: The removal of the nitrogen group found on proteins
Where/how does protein digestion occur in the body? Include key enzymes involved in the
process and their source organs. - CORRECT ANSWER✔✔- 1. In the mouth, chewing
begins the mechanical breakdown of protein.
,2. In the stomach, hydrochloric acid and the enzyme pepsin begin the chemical digestion of
protein.
3. In the small intestine, pancreatic proteases (trypsin and chymotrypsin), along with enzymes
in the microvilli break down polypeptides into amino acids, dipeptides, and tripeptides.
What risk is there in consuming isolates of single amino acids? - CORRECT ANSWER✔✔-
Similar amino acids sometimes use the same transporter, so if there is an overabundance of
one amino acid, it may block the absorption of another (deficiency).
Outline the key functions of proteins. Use specific examples. - CORRECT ANSWER✔✔- 1.
Structure: Protein forms some of the base structure of bone, ligaments, muscles, hair, and
skin
2. Enzymes: Proteins that speed of the rate of chemical reactions
3. Transport: The hemoglobin protein in blood binds to oxygen and allows it to be transported
by red blood cells
4. Protection from disease: Antibodies are proteins that help fight off infection
5. Movement: Actin and myosin are proteins that allow muscles to contract
6. Fluid balance: Proteins found in blood draw in water, reducing chance of edema
7. Energy extraction
Differentiate between kwashiorkor and marasmus. - CORRECT ANSWER✔✔-
Kwashiorkor: Protein deficiency leading to fluid accumulation in the abdomen, and a fatty
liver
Marasmus: Protein and energy deficiency leading to the depletion of fat stores and wasting of
muscle
Contrast the potential benefits and risks of consuming a high protein diet. - CORRECT
ANSWER✔✔- Benefits:
-May be associated with weight loss
-Can help build muscle mass
Risks:
-Can lead to dehydration, since deamination requires more water excretion
, -May increase calcium loss
-May increase risk of kidney stones
Outline the protein recommendations for the average Canadian, pregnant women and
endurance and strength athletes. - CORRECT ANSWER✔✔- AMDR: 10-35% of calories
RDA: 0.8 g/kg of body weight
Pregnant: +25 g/day
Endurance/Strength Athletes: 1.2-1.4 g/kg of body weight
Explain the concept of protein complementation. - CORRECT ANSWER✔✔- Consuming
different sources of plant protein that are rich sources of certain essential amino acids, to
ensure all the essential amino acids are met.
Differentiate between the different types of vegetarian diets. - CORRECT ANSWER✔✔-
Semivegetarian: Excludes red meat but may include fish, poultry, diary products, and eggs.
Pescetarian: Excludes all animal flesh except fish.
Lacto-Ovo Vegetarian: Excludes all animal flesh but does include eggs and dairy products
such as milk and cheese.
Lacto Vegetarian: Excludes animal flesh and eggs but does include dairy products.
Vegan: Excludes all food of animal origin.
Contrast the benefits and risks of a vegetarian diet. - CORRECT ANSWER✔✔- Benefits:
-Vegetarians have lower rates of heart disease, breast cancer, obesity, hypertension, and
diabetes
-It is better for the environment (more efficient use of land resources)
-Reduced risk of infection from food
-May be cheaper
-Reduces animal harm
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