Chemistry · Biology

Pharmacology and Therapeutics

1,699 Questions

Engage with critical pharmacology and therapeutics questions covering drug classifications and therapeutic mechanisms. Topics include chemical absorption, medication formulations, and pharmacogenomics. This collection is useful for students preparing for medical entrance, nursing, and science competitive examinations.

Chemical absorption routesDrug formulation typesMedication mechanismsEnzyme inhibitorsPharmacogenomic tests

Pharmacology and Therapeutics Questions

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

Marijuana and LSD are

  1. Narcotics

  2. Hallucinogens

  3. Stimulants

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Halucinogens are psychoactive agents which can cause hallucinations, perception anomalies and other substantial changes in thoughts, emotions and consciousness.  Marijauna, LSD and Ganja are all examples of hallucinogens.
Thus, the correct answer is option B.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

LSD is obtained from

  1. Cannabis

  2. Clavicep

  3. Fusarium

  4. Nostoc
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lysergic acid diethylamide or LSD is a psychedelic drug of the ergoline family - which include altered thinking processes, closed- and open-eye visuals, synesthesia, an altered sense of time. LSD can be derived from the ergot alkaloids, by the fungus Clavicep purpurea.
Thus, the correct answer is option B.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

Opiates narcotics are

  1. Morphine, codeine, heroin

  2. Morphine, barbiturates, caffeine

  3. Codeine, heroin, cocaine

  4. Cocaine, caffeine, codeine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Opiates are a group of drugs that are used for treating pain. They are derived from opium which comes from the poppy plant. Opiates go by a variety of names including opiates, opioids and narcotics. The term opiates are sometimes used for close relatives of opium such as codeine, morphine and heroin.
Therefore, the correct answer is option A.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

The most highly addictive of the drugs is

  1. Heroin

  2. LSD

  3. Alcohol

  4. Barbiturates
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Heroin is a highly addictive illegal drug. It is used by millions of addicts around the world who are unable to overcome the urge to continue taking this drug everyday of their lives. Heroin is made from the resin of poppy plants, Milky, sap-like opium is first removed from the pod of the poppy flower. This opium is refined to make morphine, then further refined into different forms of the heroin
So, the correct answer is 'Heroin'

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

Opium derivative is/are

  1. Morphine

  2. Codeine

  3. Heroin

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Opium is the dried latex obtained from the opium poppy (Papaver somniferum). There are many opium derivatives that are used widely in the medical field, such as morphine and codeine while others, like heroin are used on the streets.
Therefore, the correct answer is option D.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

The drugs which relieve intense pain are

  1. Hallucinogens

  2. Opiates

  3. Stimulants

  4. Sedatives
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Opiates are medications that relieve pain. They reduce the intensity of the pain signals reaching the brain and affect those brain areas controlling emotions, which diminishes the effects of a painful stimulus.
Thus, the correct answer is option B.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

Most potent hallucinogenic drug is

  1. Charas

  2. Bhang

  3. Hashish

  4. LSD
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A hallucinogen is a psychoactive agent which can cause hallucinations, perception anomalies and other substantial subjective changes in thoughts, emotion and consciousness.
LSD is the most powerful hallucinogenic (mind-altering) drug. It is 100 times more potent than hallucinogenic mushrooms. 
Therefore, the correct answer is option D.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

Select the correct statements from the ones given below.

  1. Cocaine is given to patients after surgery as it stimulates recovery.

  2. Barbiturates is given to criminals to make them tell the truth.

  3. Morphine is often given to persons, who have undergone surgery as a pain killer.

  4. Chewing tobacco lowers blood pressure and heart rate.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Cocaine is a powerfully addictive stimulant drug made from the leaves of the coca plant. It produces short-term euphoria, in addition to potentially dangerous physical effects like raising heart rate and blood pressure. Cocaine is a strong central nervous system stimulant that increases levels of the neurotransmitter dopamine in brain circuits regulating pleasure and movement.
Barbiturates are a group of drugs in the class of drugs known as sedative-hypnotics, which generally describes their sleep-inducing and anxiety-decreasing effects. Benzodiazepine use has largely replaced barbiturates in the medical profession.
Morphine is an opioid pain medication. An opioid is sometimes called a narcotic. Morphine is used to treat moderate to severe pain. Short-acting formulations are taken as needed for pain. Morphine is not for treating short-term pain just after surgery unless you were already taking morphine before the surgery. 
Chewing tobacco is very harmful for heart and blood pressure. 
Hence, the correct answer is option C.
Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

The drugs used by weight conscious peoples to reduce appetite and increase alertness are

  1. LSD

  2. Morphine

  3. Amphetamines and cocaine

  4. Aspirin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Stimulants are a class of drugs that elevate mood, increase feelings of well-being, and increase energy and alertness. Stimulants can cause the heart to beat faster and will also cause blood pressure and breathing to elevate. Such stimulants include cocaine, amphetamine, nicotine, caffeine.
Thus, the correct answer is option (C), 'Amphetamines and cocaine'.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

Among these, ............... is not a hallucinogen

  1. Marijuana

  2. LSD

  3. Ergot

  4. Amphetamine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hallucinogens are natural and synthetic substances that when, ingested alter one's state of consciousness.
Cannabis, commonly known as marijuana is a psychoactive drug and is considered natural hallucinogen. LSD or lysergic acid diethylamide is a very strong hallucinogen. A form of LSD synthesized many important ergot alkaloids, which are all hallucinogens.
Amphetamine, on the other hand, is a potent CNS stimulant of the phenethylamine class used to treat narcolepsy and attention deficit disorder.
Thus, the correct answer is option (D), 'Amphetamine'.

Multiple choice evs - i community health and hygiene disorders of nervous system drug, tobacco and alcohol consumption addiction and dependence

A. Pethidine and Methadone are synthetic opiates.
R. The action of synthetic opiate is similar to morphine, both structurally and pharmacologically.

  1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

  2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

  3. If Assertion is true but Reason is false.

  4. If both Assertion and Reason are false.

  5. If Assertion is false but Reason is true.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pethidine is a synthetic opioid analgesic of the phenylpiperidine class. Methadone is also an opioid medication.
Morphine is also an opioid pain medication. Pethidine and methadone are not structurally similar to morphine. Hydromorphone is structurally related to morphine.
Therefore, the correct answer is option C.

Multiple choice biology economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

The active chemical drug reserpine is obtained from 

  1. Datura

  2. Rauwolfia

  3. Atropa

  4. Papaver
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Reserpine (also known by trade names Raudixin, Serpalan, Serpasil) is an indole alkaloid, antipsychotic, and antihypertensive drug that has been used for the control of high blood pressure and for the relief of psychotic symptoms, although because of the development of better drugs for these purposes and because of its numerous side-effects, it is rarely used today. The antihypertensive actions of reserpine are a result of its ability to deplete catecholamines (among other monoamine neurotransmitters) from peripheral sympathetic nerve endings. These substances are normally involved in controlling heart rate, force of cardiac contraction and peripheral vascular resistance. Reserpine-mediated depletion of monoamine neurotransmitters in the synapses is often cited as evidence to the theory that depletion of the monoamine neurotransmitters causes subsequent depression in humans (c.f. monoamine hypothesis). However, this claim is not without controversy. The reserpine-induced depression is considered by some researchers to be a myth, while others claim that teas made out of the plant roots containing reserpine have a calming, sedative action that can actually be considered antidepressant. Notably, reserpine was the first compound shown to be an effective antidepressant in a randomized placebo-controlled trial. Reserpine was isolated in 1952 from the dried root of Rauwolfia serpentina.
So the correct option is 'Rauwolfia'.
Multiple choice biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

Which one of the following act as vasodilator?

  1. Vasopressin

  2. Angiotensin II

  3. Renin

  4. Atrial natriuretic factor
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Atrial natriuretic factor cause dilation of the afferent arterioles and constriction of the efferent arterioles leading to a primary increase in GFR.

So the correct answer is 'Atrial natriuretic factor'.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Drug that can cause constipation is 

  1. Antiemetic

  2. Antiseptic

  3. Antidepressant

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Constipation is a condition of the digestive system in which an individual has hard feces to expel out of the body. Medication also cause constipation. Medication that cause constipation include opioids, certain antacids, antidepressants and anticholinergics.
So the correct answer is 'Antidepressant'.