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WorksheetsProtein
Total questions: 50
Worksheet time: 25mins
What is monomer of protein?
Glucose
Amino acids
Fatty acids
Glycerol
How many essential amino acids (EAA) are there?
15
9
20
11
Which amino acid becomes conditionally essential if phenylalanine is lacking in the diet?
Isoleucine
Valine
Leucine
Tyrosine
What type of protein contains all essential amino acids?
Incomplete protein
Animal protein
Complete protein
Plant protein
What is the process called when the body removes nitrogen from amino acids to release energy?
Synthesis
Deamination
Transamination
Hydrolysis
Which of the following is a branched-chain amino acid (BCAA)?
Alanine
Cysteine
Leucine
Serine
What is the recommended protein intake for resistance training athletes per kg of body weight?
2.0 to 2.2g
1.7 to 1.8g
1.5 to 1.6g
1.0 to 1.2g
What condition is characterized by protein deficiency in infants and children?
Obesity
Kwashiorkor
Anemia
Marasmus
Which protein function helps maintain proper acid-base balance in the body?
Energy production
Transport function
Regulation of water balance
Formation of enzymes
What is a potential health effect of excessive dietary protein?
Improved hydration
Kidney strain
Enhanced digestion
Increased muscle mass
Which of the following is a complete protein source?
Legumes
Vegetables
Nuts
Eggs
What is the primary role of antibodies in the body?
Provide energy
Attack bacteria and viruses
Transport nutrients
Regulate blood sugar
Which amino acid is known to help reduce fatigue during exercise?
Arginine
Tyrosine
Glutamine
Serine
What is the nitrogen balance when the body retains adequate protein?
Positive nitrogen balance
Negative nitrogen balance
Neutral nitrogen balance
Variable nitrogen balance
Which of the following is NOT a function of protein?
Storage of fat
Vision
Hormone regulation
Energy production
What is the primary function of enzymes in the body?
Store energy
Speed up chemical reactions
Transport oxygen
Provide structural support
Which vitamin is essential for the synthesis of collagen?
Vitamin A
Vitamin C
Vitamin D
Vitamin E
What is the term for the process by which proteins lose their structure and function?
Denaturation
Hydrolysis
Coagulation
Fermentation
What is the main function of hemoglobin in the blood?
Transport fats
Regulate body temperature
Transport oxygen
Fight infections
Which type of protein is primarily responsible for muscle contraction?
Structural proteins
Enzymatic proteins
Contractile proteins
Transport proteins
Which of the following is a source of incomplete protein?
Quinoa
Chicken
Legums
Fish
What is the primary role of collagen in the body?
Energy storage
Structural support
Hormone production
Oxygen transport
Which of the following is a source of complete protein?
Tofu
Rice
Peas
Fish
What is the term for the process of building proteins from amino acids?
Catabolism
Anabolism
Metabolism
Hydrolysis
Which type of protein is primarily found in plant sources?
Complete protein
Animal protein
Incomplete protein
Functional protein
What is the role of enzymes in metabolic pathways?
To provide energy
To act as catalysts
To store nutrients
To transport oxygen
What is the primary function of myoglobin in muscle tissue?
Store glucose
Transport oxygen
Provide energy
Regulate temperature
What is the primary source of energy for the body during prolonged exercise?
Carbohydrates
Fats
Proteins
Vitamins
Which type of protein is primarily responsible for immune response?
Structural proteins
Transport proteins
Antibodies
Enzymatic proteins
What is the role of creatine in muscle metabolism?
Enhances protein synthesis
Increases ATP production
Reduces muscle fatigue
Improves hydration
The polypeptide in the diagram consists of;
3 amino acids and 3 peptide bonds
3 amino acids and 2 peptide bonds
4 amino acids and 2 phosphodiester bonds
3 amino acids and 2 phosphodiester bonds
Based on the diagram, the side chain of amino acid alanine is;
NH2
COOH
H
CH3
Identify bond K
ester bond
peptide bond
glycosidic bond
hydrogen bond
Which of the following is not a protein?
Hemoglobin
Cholesterol
Antibody
Insulin
Which reaction is needed to break the bond between two amino acids?
Condensation
Dehydrogenation
Hydration
Hydrolysis
The diagram shows a bond forming between two amino acids. What is the name of this reaction?
Condensation
Hydrolysis
Pepysis
Oxidation
What is the structure of a dipeptide?
2 amino acids
3 amino acids
Long peptide chain
Single amino acid
What is the nutritional classification of amino acids?
What is protein?
What is the main function of hemoglobin in the blood?
Transport carbon dioxide
Transport oxygen
Regulate blood pressure
Store nutrients
Which of the following is a characteristic of essential amino acids?
They can be synthesized by the body.
They must be obtained from the diet.
They are not required for protein synthesis.
They are only found in animal sources.
What is the role of transport proteins in the body?
Store energy
Facilitate movement of substances
Provide structural integrity
Act as enzymes
What is the effect of protein deficiency on muscle mass?
Increased muscle mass
No effect
Decreased muscle mass
Muscle hypertrophy
What is the process called when amino acids are linked together to form proteins?
Hydrolysis
Peptidation
Condensation
Denaturation
What is the primary function of antibodies in the immune system?
Transport nutrients
Fight infections
Store energy
Regulate blood pressure
What is the process called when proteins lose their three-dimensional structure?
Denaturation
Hydrolysis
Deamination
Transcription
Which of the following amino acids is classified as essential?
Alanine
Glycine
Leucine
Serine
What is the primary function of enzymes in biological systems?
Store genetic information
Speed up chemical reactions
Provide structural support
Transport molecules
What is the primary source of protein for vegetarians?
Meat
Dairy products
Legumes and nuts
Fish
