Related Questions

A drug that is highly effective in treating many types of infection can,at present,be obtained only from the bark of the ibora , a tree that is quite rare in the wild. It takes the bark of 5000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibore's extinction. Which of the following,if true, most seriously weakens the arguments above ?
A The drug made from the ibora bark is dispensed to doctors from a central authority
B The drug made from the ibora bark is expensive to produce
C The leaves of the ibora are used in a number of medical products
D The ibora can be propagated from cuttings and grown under cultivation
The drug combinations that exhibit physiological antagonism are
A Salbutamol and histamine on bronchioles
B Prednisolone and insulin on blood glucose level
C Acetylcholine and adrenaline on heart
D Isoprenaline and propranolol on bronchioles
E Atropine and pilocarpine on pupil
Bioavailability of a drug may be decreased if the drug is
A Water soluble
B Protein in nature
C Ionized
D Acid stable
E Lipid soluble
Following subcutaneous injection of a drug into a healthy young adult, dilatation of the pupil and a rise in systolic blood pressure are produced. The drug could be
A Acting by stimulating  and  receptors
B Acting by blocking sympathetic ganglia
C Atropine
D Adrenaline
E Morphine
Each of the following sentences contains a blank space. Fill in the blank space with appropriate preposition : Exercise is beneficial..............................health.
A to
B for
C about
D in
People who take megadoses of vitamins and minerals should take care: though beneficial in small quantities, in large amounts these substances may have--- effects.
A admirable
B redundant
C intangible
D toxic
Fill in the blank with appropriate preposition : 'Exercise is beneficial ---- health .
A with
B to
C for
D on
the wzone in the upper layers of Earth's atmosphere is beneficial, ____ animal and plant life from dangerous ultraviolet readittion
A protecting
B withdrawing
C thwarting
D displacing
What is the synonym of 'beneficial'?
A system
B investment
C profitable
D battle
Both coffee and tea have beneficial as well as ___ side- effects; while they stimulate the heart and help overcome fatigue, they also ___ insomnia and other nervous disorders.
A Injurious, exacerbate
B Malignant, interrupt
C Salutary, heighten
D Invent, introduce

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