Biochemical Basis of Sports Performance Quiz | Biochemical Basis of Sports Performance MCQs & Answers

Sports GK Questions and Answers 2024 (Latest Updated)

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Questions
81 The mode of action of a steroid hormone involves:
A binding to a cell membrane receptor
B activation of protein kinases
C binding to calmodulin
D modifying gene transcription

Answer: modifying gene transcription
82 Mutations are errors in DNA that:
A are always harmful
B only occur in the presence of carcinogens
C increase tumour growth
D occur spontaneously at a low rate

Answer: occur spontaneously at a low rate
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83 The sex of a child is dictated by the inheritance of:
A the number of X chromosomes from the mother
B a recessive allele on the X chromosome
C a single Y chromosome from the mother
D a single Y chromosome from the father

Answer: a single Y chromosome from the father
84 The capacity of the aerobically trained muscle to use fatty acids as a fuel results in:
A reduction in lactic acid formation
B sparing of muscle glycogen
C sparing of blood glucose
D all of the above (a - c) are correct

Answer: all of the above (a - c) are correct
85 Training for strength or power has little effect on:
A muscle mass
B muscle strength
C anaerobic capacity
D aerobic capacity

Answer: aerobic capacity
86 Training for endurance has little effect on:
A muscle mass
B muscle triacylglycerol and glycogen content
C mitochondrial content of muscle
D aerobic capacity

Answer: muscle mass
87 Which of the following cannot be considered as a metabolic adaptation to endurance training:
A increased maximal oxygen uptake
B increased antioxidant capacity
C increased maximal rate of fat oxidation
D increased adrenaline response to exercise

Answer: increased adrenaline response to exercise
88 Prolonged exercise impairs immune cell function due to:
A inhibitory effects of elevated stress hormones such as cortisol
B a reduction in the number of circulating white blood cells during exercise
C the removal of all the available glutamine from the circulation during exercise
D the elevated body temperature promoting bacterial growth

Answer: inhibitory effects of elevated stress hormones such as cortisol
89 Which of the following immune functions would not be performed by a neutrophil?
A antibody production
B chemotaxis
C phagocytosis
D degranulation

Answer: antibody production
90 During prolonged exercise increased amounts of interleukin-6 are released from:
A macrophages and cause suppression of other immune cell functions
B lymphocytes and inhibit macrophage function
C all muscles in the body and influence carbohydrate metabolism
D exercising muscle and influence carbohydrate and fat metabolism

Answer: exercising muscle and influence carbohydrate and fat metabolism
91 Which amino acid is very important for optimal immune function and exhibits a reduced plasma concentration during heavy training?
A glycine
B glutamine
C phenylalanine
D isoleucine

Answer: glutamine
92 Which of the following is not a dietary antioxidant?
A vitamin C
B lipoic acid
C vitamin K
D beta-carotene

Answer: vitamin K
93 The main source of increased free radical production during exercise is thought to be from:
A electron leak from the sarcolemma
B electron leak from the mitochondrial respiratory chain
C electron leak from the sarcoplasmic reticulum
D release of reactive oxygen species from haemoglobin and myoglobin

Answer: electron leak from the mitochondrial respiratory chain
94 Codons are composed of:
A triplet sequences of nucleotide bases in mRNA
B triplet sequences of nucleotide bases in DNA
C triplet sequences of amino acids in polypeptide chains
D triplet sequences of deoxyribose sugars in DNA

Answer: triplet sequences of nucleotide bases in mRNA
95 The process of translation requires the presence of:
A mRNA, tRNA and ribosomes
B mRNA, ribosomes and RNA polymerase
C DNA, mRNA and RNA polymerase
D chromatin, DNA and amino acids

Answer: mRNA, tRNA and ribosomes
96 The transcription of DNA to a molecule of messenger RNA occurs:
A on the ribosomes
B in the cytosol
C in the nucleus
D only during cell division

Answer: in the nucleus
97 Which of the following molecules does not form part of DNA?
A purine
B pyrimidine
C deoxyribose
D amino acid

Answer: amino acid
98 Which of the following nucleotide bases is not found in RNA?
A thymine
B adenine
C uracil
D guanine

Answer: thymine

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