A competitive inhibitor of an enzyme:
I. Increases the of the enzyme.
II. Decreases the of the enzyme.
III. Can be overcome by increasing substrate concentration.
IV. Binds to the allosteric site of the enzyme.
I and II only
II and IV only
I and III only
III and IV only
Related Questions
The term metabolism means
The sum of all the enzymatically catalysed chemical reactions constantly taking place in the cells and tissues of the living organisms
Processes that change the small molecules into larger ones
Processes that converts the large molecules into smaller ones
None of the above
The chemical reactions which liberate energy by enzymatic oxidation of food stuffs to and , in the tissues are referred to as the
Energy metabolism
Respiratory metabolism
None of these
Both (a) and (b)
The most important form of energy currency in living organisms is the bond energy in the chemical called β¦..
Adenosine Triphosphate (ATP)
Adenosine Diphosphate (ADP)
Phosphate (P)
None of the above
Enzymes play a crucial role in metabolism by:
Providing energy for reactions
Consuming energy to halt reactions
Lowering the activation energy of reactions
Altering the equilibrium constant of reactions
Which of the following is NOT a characteristic of metabolic pathways?
Regulation of the pathway
Catalysis by enzymes
Occurring in a non-sequential manner
Often compartmentalized within cells
Pick the odd statement out
Removal of from amino acids converts an amino acid into an amine
All the biomolecules have a turnover
Metabolic pathway are termed as transformation reactions
Metabolic pathways always follows a linear route
When a metabolic disequilibrium is in effect, then only cells continue to function
How do cells avoid reaching metabolic equilibrium?
Cells constantly exchange matter and energy with their surroundings.
Cells exist in a closed system, preventing interaction with the external environment.
Cells utilize feedback inhibition to slow down metabolic reactions, preventing equilibrium.
Cells maintain a static internal environment, independent of external influences.
A novel organism is discovered that utilizes a unique metabolic pathway where the standard free energy change (GΒ°) for the overall reaction is +25 kJ/mol. Which of the following strategies could this organism employ to make this pathway thermodynamically feasible?
Increase the concentration of products.
Decrease the concentration of reactants.
Couple the endergonic reaction to a highly exergonic reaction.
Decrease the temperature of the reaction.
Which of these is NOT a metabolic process?
Photosynthesis
Respiration
Digestion
Diffusion of oxygen across a cell membrane
Which process releases energy stored in glucose?
Photosynthesis
Protein synthesis
DNA replication
Cellular respiration
