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When an enzyme is inhibited by an inhibitor which is structurally similar to its substrate,  

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Important Questions on Enzymes

HARD
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which one of the following statements is incorrect?
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which of these is not an important component of initiation of parturition in humans?
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
The posterior pituitary gland is not a 'true' endocrine gland because
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Oxytocin and vasopressin are synthesized in
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
The amino acid tryptophan is the precursor for the synthesis of:
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which of the following hormones that controls blood pressure is secreted by human heart?
HARD
Biology>Plant Physiology>Enzymes>Classification of Enzymes
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Match the following hormones with the respective disease:
  Column – I   Column – II
(a) Insulin (i) Addison’s disease
(b) Thyroxin (ii) Diabetes insipidus
(c) Corticoids (iii) Acromegaly
(d) Growth Hormone (iv) Goitre
    (v) Diabetes mellitus

Select the correct option
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which one of the following hormones though synthesized elsewhere, is stored and release by the master gland?
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which one of the following hormones is not involved in sugar metabolism?
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Three uniformly watered plants i, ii and iii were kept in 45% relative humidity, 45% relative humidity with blowing wind and 95% relative humidity, respectively. Arrange these plants in the order (faster to slowest) in which they will dry up.
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Malonate inhibits the growth of pathogenic bacteria by inhibiting the activity of:
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
A diabetic individual becomes unconscious after self-administering insulin. What should be done immediately to revive the individual?
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Name a peptide hormone which acts mainly on hepatocytes and adipocytes and enhances cellular glucose uptake and utilisation.
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Hypersecretion of Growth Hormone in adults does not cause a further increase in height, because
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
How dose steroid hormone influence the cellular activities?
EASY
Biology>Plant Physiology>Enzymes>Classification of Enzymes
The rigidity of cellulose is due to:
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
MEDIUM
Biology>Plant Physiology>Enzymes>Classification of Enzymes
Ethanol is used to treat methanol toxicity because ethanol