Tag: evs - i

Renewable energy is defined as energy, that comes from resources, which are naturally replenished on a human timescale such as sunlight, wind, rain, tides, waves and geothermal heat. Trees are very important for us as a renewable energy resource. Trees are a natural resource, that can be renewed - by the planting of trees - replacing the trees, that are harvested for use by people. 

Pathological impairment of memory is termed as amnesia. It is caused mainly due to some accident or on the prolonged medicinal dose. Cerebrum is mainly affected due to amnesia.

The narcotic drugs are the drugs that can reduce pain, induce a state of sedation or cause unconsciousness. These drugs are sometimes known as opoids because they act on the opioid receptors in the brain thereby altering feelings and thoughts.
Thus, the correct answer is option C.

Stimulant is any drug that excites any bodily function, but more specifically those that stimulate the brain and the central nervous system,
The major stimulant drugs are amphetamines and related compounds. Amphetamine achieve their effect by increasing the amount and activity of the neurotransmitter, norepinephrine within the brain.
The most commonly used amphetamines are amphetmiane sulfate (benzedrine), dextroamphetamine sulfate (dexedrine) and methamphetamine (methedrine).
Thus, the correct answer is option C.

All the given options are correct except that mescaline is a stimulant. Mescaline is a naturally occurring psychedelic alkaloid of the phenethylamine class, known for its hallucinogenic effects.
Thus, the correct answer is option (D), 'Mescaline is a stimulant.'.

Physical dependence refers to a state resulting from chronic use of a drug that has produced tolerance and where negative physical symptoms of withdrawal result from abrupt discontinuation or dosage reduction. Amphetamine is a potent CNS stimulant of the phenethylamine class that is used in the treatment of attention deficit hyperactivity disorder. Of the given options, opiates, cannabis and cocaine are all drugs and shows physical dependence. 
So, the correct answer is option D.

LSD is hallucinogenic. Opium is highly addictive narcotic drug. Heroin is derived from the morphine alkaloid found in opium and is depressant drug. Cannabis is considered depressant. 
Cocaine  belongs to the family of stimulants, which stimulate the nervous system.
Thus, the correct answer is option (A), 'Cocaine'.

There are three major types of CNS stimulants which are currently abused in sports as: amphetamine, cocaine and caffeine. Each drug has its own characteristic mechanism of action on CNS neurones and their associated receptors and nerve terminals.
Thus, the correct answer is option C.

Claviceps Purpurea  is an ergot fungus that grows on the ears of rye and related cereal and forage plants. Ergot contains ergotamine, which is used to synthesize lysergic acid, an analog of and precursor for synthesis of LSD.
Thus, the correct answer is option (D), 'Claviceps Purpurea.

Amphetamines, sometimes called "speed" or "uppers," are central nervous system stimulant drugs, that increase alertness, self-confidence and concentration and decrease appetite, while creating a feeling of increased energy. The chemical structure is similar to the naturally occurring adrenaline and noradrenaline, that is produced by the body.