With the help of an example explain how do tranquilizers control the feeling of depression?
Noradrenaline plays an important role in mood change. If the level of noradrenaline is low, the person suffers from depression.
While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?
Between sodium hydrogen carbonate and magnesium hydroxide which is a better antacid and why?
Assertion (A): Receptor proteins show selectivity for one chemical messenger over the other.
Reason (R): Chemical messenger binds to the receptor site and inhibits its natural function.
Assertion (A): Artificial sweeteners are added to the food to control the intake of calories.
Reason (R): Most of the artificial sweeteners are inert and do not metabolise in the body.
Aspirin is pain relieving antipyretic drug but can be used to prevent heart attack. Explain.
Draw the diagram showing micelle formation by the following detergent. CH3(CH2)10CH2O SO3– Na+.
With refrence to which classification has the statement "ranitidine is an antacid", been given?
Sodium salts of some acids are Very useful as food preservatives. Suggest a few such acids.
Which of the following are sulpha drugs?
(a) Sulphapyridine (b) Prontosil
(c) Salvarsan (d) Nardil
How does the branching of hydrocarbon chain of synthetic detergents affect their biodegradability?
Assertion (A): Chemical messenger gives message to the cell without entering the cell.
Reason (R): Chemical messenger is received at the binding site of receptor proteins.
What are enzyme inhibitors? Classify them on the basis of their mode of attachments on the active site of enzymes. With the help of diagrams explain how do inhibitors inhibit the enzymatic activity.
Ckemistnj in Evenjdai] Life 325
Which of the following are antidepressants?
(a) Iproniazid (b) Phenelzine (c) Equanil (d) Salvarsan
Which of the following are anionic detergents?
(a) Sodium salts of sulphonated long chain alcohol.
(b) Ester of stearic acid and polyethylene glycol.
(c) Quaternary ammonium salt of amine with acetate ion.
(d) Sodium salts of sulphonated long chain hydrocarbons.
What is the advantage of using antihistamines over antacids in the treatment of acidity?
Name two ct-amino acids which form a dipeptide which is 100 times more sweet than cane sugar?
What happens when the bond formed between an enzyme and an inhibitor is a strong covalent bond?
Assertion (A): Preservative are added to food items.
Reason (R): Preservatives inhibit the growth of microorganisms.
Synthetic detergents have advantage over usual soaps as far as cleansing power is concerned. But use of synthetic detergents over a long time creates environmental pollution. How can the pollution caused by synthetic detergents be minimized? Classify the detergents according to their chemical nature.
With refrence to which classification has the statement "ranitidine is an antacid", been given?
Sugar is the main source of energy as it produces energy on metabolic decomposition. But these days low chloride drinks are more popular, why?
Assertion (A): Sulpha drug contain sulphonamide group.
Reason (R): Salvarsan is a sulpha drug.
Assertion (A): Sodium chloride is added to precipitate soap after saponification.
Reason (R): Hydrolysis of esters of long chain fatty acids by alkali produces soap in colloidal form.
Assertion (A): Competitive inhibitors compete with natural substrate for their attachment on the active sites of enzymes.
Reason (R): In competitive inhibition, inhibitor binds to the allosteric site of the enzyme.