Biochemical Basis of Sports Performance Quiz | Biochemical Basis of Sports Performance Multiple Choice Questions(MCQs) & Answers

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 What type of covalent bonds link the amino acids in a protein?
A peptide bonds
B hydrogen bonds
C ionic bonds
D glycosidic bonds

Answer: peptide bonds
2 Which of the following is not an amino acid?
A glutamic acid
B aspartic acid
C glutamine
D palmitic acid

Answer: palmitic acid
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3 Type I muscle fibres have the following characteristics:
A white, glycolytic, slow contracting
B white, oxidative, slow contracting
C red, oxidative, fast contracting
D red, oxidative, slow contracting

Answer: red, oxidative, slow contracting
4 Fast-twitch fibres contain:
A a relatively large number of mitochondria and low ATPase activity
B a relatively small number of mitochondria and low ATPase activity
C a relatively small number of mitochondria and high ATPase activity
D a relatively large number of mitochondria and high ATPase activity

Answer: a relatively small number of mitochondria and high ATPase activity
5 A muscle fibre relaxes when:
A the nerve stimulus is removed
B the nerve stimulus is too forceful
C the actin binding sites are uncovered
D the actin binding sites are saturated

Answer: the nerve stimulus is removed
6 After calcium ions have been released from the sarcoplasmic reticulum they:
A initiate an action potential
B cause sodium channels to open in the sarcolemmal membrane
C bind to troponin
D bind to actin

Answer: bind to troponin
7 The trigger to initiate the contractile process in skeletal muscle is:
A potassium binding to myosin
B calcium binding to tropomyosin
C ATP binding to the myosin cross bridges
D calcium binding to troponin

Answer: calcium binding to troponin
8 An action potential arriving at the motor endplate causes release of:
A acetylcholine which traverses the neuromuscular junction
B sodium ions which binds to sodium receptors on the muscle membrane
C calcium ions which initiate an action potential along the muscle fibre
D noradrenaline which increases muscle metabolic activity

Answer: acetylcholine which traverses the neuromuscular junction
9 The sarcoplasmic reticulum in muscle cells acts as a:
A store of digestive enzymes
B store of sodium ions
C store of lipid
D store of calcium ions

Answer: store of calcium ions
10 The two principal contractile proteins found in skeletal muscle are:
A actin and troponin
B actin and myosin
C troponin and tropomyosin
D myosin and tropomyosin

Answer: actin and myosin
11 Which of the following factors does not influence success in sport?
A ability to tolerate heavy training without succumbing to illness or injury
B tactics
C the diet
D ingestion of carnitine during exercise

Answer: ingestion of carnitine during exercise
12 Endurance training increases the muscle’s capacity to:
A contract faster
B breakdown phosphocreatine
C burn fat and carbohydrate
D generate energy anaerobically

Answer: burn fat and carbohydrate
13 Women’s world record performances have improved rapidly in recent years mainly because:
A women have evolved a greater muscle mass
B women can now run faster than men
C women have started training at an earlier age
D more women are now engaged in sport

Answer: more women are now engaged in sport
14 In sprint events, improvements in performance may come from:
A faster reaction times
B increased power generating ability of muscles
C improved resistance to fatigue
D all of the above

Answer: all of the above
15 Metabolism is determined by the:
A size of proteins in the cell
B availability of amino acids
C proteins formed as dictated by the genetic material
D protein composition of the DNA

Answer: proteins formed as dictated by the genetic material
16 Which of the following is an amino acid that is found in proteins?
A adenosine
B adenine
C alanine
D linoleic acid

Answer: alanine
17 Which of the following factors can affect enzyme activity?
A temperature
B pH
C the presence of certain metal ions
D all of the above

Answer: all of the above
18 Prosthetic groups are:
A required by all enzymes in the cell
B loosely bound to enzymes via hydrogen bonds
C sites on the enzyme molecule that permit allosteric modification of enzyme activity
D tightly bound to enzymes and are required for their activity

Answer: tightly bound to enzymes and are required for their activity
19 The initial rate of an enzyme catalysed reaction depends on:
A the concentration of the enzyme
B the concentration of the substrate
C the affinity of the enzyme for its substrate
D all of the above

Answer: all of the above
20 Kinase reactions:
A inhibit ATP breakdown
B involve the addition or removal of a phosphate group
C involve the addition or removal of a ketone group
D involve the addition or removal of an amino acid to a polypeptide chain

Answer: involve the addition or removal of a phosphate group

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