Tag: biology in human welfare

Questions Related to biology in human welfare

Reserpine an alkaloid or drug extracted from roots of the following plant which cures the mental disorders and reduces or check the blood pressure or A hypertension drug is derived from

  1. Rauwolfia serpentina

  2. Ferula asafoetida

  3. Atropa belladona

  4. Digitalis perpurea


Correct Option: A
Explanation:

Rauwolfia serpentina or Reserpine (Family  - Apocyanaceae) has several alkoloids - reserpine, reserpinine, serpentine, sarpajmaline etc.

Psychotic drugs include

  1. Sedatives, tranquilizers and stimulants

  2. Narcotics and hallucinogens

  3. Vodka

  4. Both A and B


Correct Option: A
Explanation:
Psychotic drugs cause psychosis in which  thoughts and emotions of a person are affected to such an extent that contact is lost with reality. The people interpret the things around them in a different way. These drugs act on brain and are also called as mood altering drugs. Such drugs include sedatives, tranquilizers and stimulants.
Sedatives are CNS (Central nervous system) depressants and reduce pain and excitement. Tranquilizers also act on CNS and have a calming effect and reduce anxiety. Stimulants are the drugs that stimulate nervous system and cause excitement. 
So, the correct answer is 'Sedatives, tranquilizers and stimulants'.

Sedatives differ from tranquilisers in

  1. Sedatives induce sleep while tranquilisers do not do so

  2. Sedatives depress brain activity while tranquilizers activate brain functioning

  3. Sedatives are strong tranquilizers

  4. Sedatives cause addiction while tranquilisers do not produce such an effect


Correct Option: A
Explanation:
Both sedatives and tranquilizers act on CNS (Central nervous system). They are depressants of CNS. Sedatives are hypnotics as they have sleep producing effect. They lower functional or physiological activity that leads to drowsiness or sleep. Tranquilizers reduce anxiety and have a calming effect but they do not induce sleep or drowsiness.
So, the correct answer is 'Sedatives induce sleep while tranquilisers do not do so'.

Study the following statements with reference to drugs and choose the incorrect ones.
(i) Barbiturates cause the sleeplessness.

(ii)

Opiods are obtained from the leaves of Erythroxylum coca.

(iii) Morphine is a very effective sedative and pain killer.
(iv) Cocaine is obtained from hemp plant.

  1. i, ii, iii

  2. ii, iii, iv

  3. i, iii, iv

  4. i, ii, iv


Correct Option: D
Explanation:
(i) Barbiturates are sedative hypnotics that have sleep inducing effect.
(ii) Opiates are obtained from opium, the dried latex of unripen capsular fruits of poppy plant Papaver somniferum.
(iii) Morphine is a strong sedative and analgesic (pain killer) and therefore given to the patients who have undergone surgery.
(Iv) Cocaine is natural stimulant obtained from Erythroxylon coca.
Hence, only statement (iii) is correct.
So, the correct answer is 'i, ii, iv'.

Which one of the following statements is correct?

  1. Lysergic acid diethylamide is a depressent

  2. Heroin is diacetyl morphine

  3. Hashish has hallucigenic property

  4. Cocaine is opioid drug


Correct Option: B
Explanation:
A. LSD (Lysergic acid diethylamide) are powerful hallucinogens obtained from the sclerotia of ergot fungus, Claviceps purpurea, present on rye plant.
B. Diacetyl morphine is another name of Heroin. It is a semisynthetic opiate and depressant of CNS.
C. Hashish is obtained from Cannabis and has strong sedative effects.
D. Cocaine is a natural stimulant which delays fatigue. It has serious impacts on heart i.e. cardiovascular system. It can increase heart beat and blood pressure. 
Hence, statement B is correct.
So, the correct answer is 'Heroin is diacetyl morphine'.

Hypotensive tranquilliser drug reserpine is obtained from roots of

  1. Ferula asafoetida

  2. Rauwilfia serpentina

  3. Papver somniferum

  4. Curcuma longa


Correct Option: B
Explanation:

Reserpine is an alkaloid extracted from the roots of the plant,  𝘙𝘢𝘶𝘸𝘰𝘭𝘧𝘪𝘢 𝘴𝘦𝘳𝘱𝘦𝘯𝘵𝘪𝘯𝘢 and it has been used as an antihypertensive medication i.e., to reduce high blood pressure. It produces a fall in B.P known as hypotension. Apart from being an antihypertensive drug, Reserpine is also an antipsychotic/traquilizer used in reducing anxiety and tension producng a calming/soothing effect.
So, the correct answer is ' 𝘙𝘢𝘶𝘸𝘰𝘭𝘧𝘪𝘢 𝘴𝘦𝘳𝘱𝘦𝘯𝘵𝘪𝘯𝘢'.

Which one of the following depresses brain activity and produces feelings of calmness,relaxation and drowsiness -

  1. Morphine

  2. Valium

  3. Hashish

  4. Amphetamines


Correct Option: B

Which one is correctly matched?

  1. Cocaine - Opiate narcotic

  2. Bhang - Analgesic

  3. Reserpine - Tranquilliser

  4. Morphine - Hallucinogen


Correct Option: C
Explanation:
A. Cocaine is a natural stimulant. It stimulates nervous system and delays fatigue. 
B. Bhang is a hallucinogen obtained from fresh and dried leaves and flowering shoots of male and female plants of Cannabis sativa.
C. Reserpine is a tranquiliser. It has sleep inducing properties. 
D. Morphine is a natural opiate derived from opium, the dried latex of poppy plant Papaver somniferum. 
Hence, option C is correct.
So, the correct answer is 'Reserpine- Tranquiliser'.

Which is a sedative drug that gives feeling of calmness, relaxation and drowsiness?

  1. Heroin

  2. Cocaine

  3. Barbiturate

  4. Opium


Correct Option: C
Explanation:
Barbiturates are sedative hypnotics i.e. they have sleep inducing effects. They are depressants of central nervous system and give a feeling of calmness and relaxation. They slow down physiological and functional activity of body and produce sleep or drowsiness. They also reduce anxiety. If barbiturates are taken in excess amount, they can cause permanent damage to brain, headache or even coma.
So, the correct answer is 'Barbiturate'.

Which drug would be useful in controlling a rogue elephant?

  1. Phencyclidine

  2. Cocaine

  3. Morphine

  4. Amphetamine


Correct Option: A
Explanation:
Phencyclidine is also known as angel dust. It is a drug that has mind altering effects. It can cause hallucinations, distorted sight and perceptions of sound. It is also used as veterinary anaesthetic drug. So, it can be used for controlling a rogue elephant because it acts as a tranquilizer and has sedative-hypnotic effects. So, it has a calming and sleep producing effect.
So, the correct answer is 'Phencyclidine'.