With refrence to which classification has the statement "ranitidine is an antacid", been given?
This statement refers to the classification of drugs according to pharmacological effect because any drug which will be used to neutralise the excess acid present in the stomach will be called an antacid.
While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?
Which of the following statements are correct about barbiturates?
(a) Hypnotics or sleep producing agents.
(b) These are tranquilizers.
(c) Non-narcotic analgesics.
(d) Pain reducing without disturbing the nervous system.
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.
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): Preservative are added to food items.
Reason (R): Preservatives inhibit the growth of microorganisms.
With the help of an example explain how do tranquilizers control the feeling of depression?
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 not used as food preservatives?
(a) Table salt (b) Sodium hydrogen carbonate
(c) Cane sugar (d) Benzoic acid
What happens when the bond formed between an enzyme and an inhibitor is a strong covalent bond?
Assertion (A): Receptors are crucial to body's communication process. Reason (R): Receptors are proteins.
In what respect do prontosil and Salvarsan resemble? Is there any resemblance between azo dye and prontosil? Explain.
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.
How does the branching of hydrocarbon chain of synthetic detergents affect their biodegradability?
Between sodium hydrogen carbonate and magnesium hydroxide which is a better antacid and why?
Which of the following compounds are administered as ant-acids?
(a) Sodium carbonate (b)Sodium Hydrogen carbonate
(c)Aluminium carbonate (d)Magnism Hydroxide
Both antacids and antiallergic drugs are antihistamines but they cannot replace each other. Explain why?
Name two ct-amino acids which form a dipeptide which is 100 times more sweet than cane sugar?
