Tag: option a: neurobiology and behaviour

Questions Related to option a: neurobiology and behaviour

Which one of the following is a matching pair of a drug and its category?

  1. Amphetamines and stimulant

  2. Lysergic acid dimethyl amide and narcotic

  3. Heroin and psychotropic

  4. Benzodiazepam and pain killer


Correct Option: A
Explanation:

Amphetamines are stimulants that increase the activity of the central nervous system. These are basically a kind of drugs that increase the activity of chemicals in the brain. So they are used to have fun, forget problems, celebrate, relieve boredom and to stay alert.

So, the correct answer is 'Amphetamines and stimulant'.

Cirrhosis of liver is caused by the chronic intake of

  1. Opium

  2. Alcohol

  3. Tobacco

  4. Cocaine


Correct Option: B
Explanation:

Cirrhosis is an abnormal liver condition in which there is irreversible scarring of the liver. The main causes are sustained excessive alcohol consumption, viral hepatitis B and C, and fatty liver disease, however, there are many possible causes. People with cirrhosis may develop jaundice (yellowing of the skin, eyes and tongue), itching and extreme tiredness. So, the correct answer is option B.

Korsakoff's syndrome is related to

  1. Alcohol abuse

  2. Drug abuse

  3. Smoking abuse

  4. None of the above


Correct Option: A
Explanation:

Korsakoff's syndrome is caused by lack of thiamine (vitamin B$ _{1}$), which affects the brain and nervous system. People who drink excessive amounts of alcohol are often thiamine deficient. This is because many heavy drinkers have poor eating habits and their diet does not contain essential vitamins and alcohol can interfere with the conversion of thiamine into the active form of the vitamin (thiamine pyrophosphate). Alcohol can inflame the stomach lining, cause frequent vomiting and make it difficult for the body to absorb the key vitamins it receives. Alcohol also makes it harder for the liver to store vitamins. Although Korsakoff's syndrome is not strictly speaking a dementia, people with this condition can experience loss of short-term memory. 

Barbiturates are

  1. Tranquilisers

  2. Sedatives

  3. Opioids

  4. Stimulants


Correct Option: D
Explanation:
Barbiturates are CNS (Central nervous system) depressants. They are sedative-hypnotic drugs as they reduce anxiety and excitement and induce sleep. They lower the functional and physiological activity that leads to drowsiness or sleep. Barbiturates are derivatives of barbituric acid. If they are taken in excess amount, they cause permanent damage to brain.
So, the correct answer is 'Stimulants'.

Tea has a stimulant

  1. Tannis

  2. Caffiene

  3. Theophylline

  4. Both B and C


Correct Option: D
Explanation:
Tea has four stimulants, caffeine, theophylline, theobromine and L-theanine. Caffeine is a stimulant of CNS and reduce drowsiness or sleep. Theophylline and theobromine relaxes smooth muscles. They are also stimulants of heart and have mild diuretic effects. L-theanine is a psychoactive amino acid which improves the attention and functioning of brain.
So, the correct answer is 'Both B and C'.

The drug often used for reducing appetite is

  1. LSD

  2. Heroin

  3. Valium

  4. Amphetamine


Correct Option: D
Explanation:
Amphetamine is a synthetic stimulant commonly known as pep pills or anti-sleep drugs. It is structurally similar to adrenaline. It is used in dope test for athletes. It is stimulant of CNS (central nervous system). It stimulates respiratory centre, suppress hunger and cause addiction. It is also used as anti-obesity drug because it reduces appetite and hence reduces weight.
So, the correct answer is 'Amphetamine'.

Drugs which do not develop physiological dependence are

  1. Opiates

  2. Sedatives

  3. Stimulants

  4. Tranquilisers


Correct Option: C
Explanation:
Stimulants are the drugs that stimulate nervous system and make a person more alert and active. They cause excitement and have pleasurable effects. They are swallowed, snorted or injected. These drugs include natural stimulants such as caffeine and cocaine and synthetic stimulants such as amphetamines. They do not cause true physiological dependence. The addiction is psychological and withdrawal causes anxiety, depression and restlessness.
So, the correct answer is 'Stimulants'.

Antisleep pills are made of

  1. Barbiturates

  2. Benzoidiazepines

  3. Amphetamines

  4. Both A and B


Correct Option: C
Explanation:
Amphetamine is a synthetic stimulant commonly known as pep pills or anti-sleep drugs. It is structurally similar to adrenaline. Excess use of amphetamine can cause insomnia (lack of sleep). It is stimulant of CNS (central nervous system). It stimulates respiratory centre, suppress hunger and cause addiction. In ancient times, amphetamines drugs were used by soldiers to keep them awake.
So, the correct answer is 'Amphetamines'.

Which of the following is a synthetic stimulant?

  1. Cocaine

  2. Amphetamine

  3. LSD

  4. Mescaline


Correct Option: B
Explanation:
Amphetamine is a synthetic stimulant commonly known as pep pills or anti-sleep drugs. It is structurally similar to adrenaline. It is used in dope test for athletes. It is stimulant of CNS (central nervous system). It stimulates respiratory centre, suppress hunger and cause addiction. High doses of amphetamine cause sleeplessness and vomiting. Examples include Benzedrine, Methedrine and Dexedrine.
So, the correct answer is 'Amphetamine'.

A useful drug that damages gastric mucosa, if taken along with alcohol is

  1. Valium

  2. Anthistamine

  3. Asprin

  4. Morphine


Correct Option: C
Explanation:

Gastritis occurs when there is an imbalance between the acid, and the mucous produced, and the acid manages to erode and damage the stomach lining. Aspirin, which inhibits cyclooxygenase, is rapidly deacetylated to salicylate. Salicylate is toxic to cells and affects mucosal barrier function, reduces cytosolic adenosine triphosphate, stimulates sodium transport, and increases proton dissipation from surface epithelial cells. 

So the correct answer is 'Asprin'.