NEET Practice Questions (MCQs) with Answers & Solutions

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Which of the following hormones contains iodine?

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Which of the following protein destroy the antigen when it enters in body cell?

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Explanation

(a) Antibodies are the proteins which protect the body against toxic substances and infections. When an antigen enter in the body cells, the antibodies present in the body destroyed the antigen.

Vitamin- B12 contains

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Explanation

The molecular formula of vitamin-B12 is C63H84 N14O14 PCO and the chemical name is cyanocobalamine. So, cobalt is present in vitamin-B12.

 

Enzymes take part in a reaction and

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Explanation

(b) The enzymes are biological catalyst produced by living cells which increase the rate of biochemical reactions in living organisms.

Which one of the following is employed as a tranquiliser?

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Explanation

(a) The drugs which are used to reduce anxiety and for the treatment of mental diseases, are called tranquilisers. These drugs are also known as pyschotherapeutic drugs. Luminal, seconal and equanil are some commonly used and is an example of tranquiliser

Commonly used antiseptic 'Dettol' is a mixture of

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Explanation

(d) Dettol is an antiseptic. It is a mixture of chloroxylenol and terpineol in a suitable solvent.

In reference to biological role, Ca2+ ions are important in

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Explanation

Calcium ions (Ca2+) are key second messengers in a variety of eukaryotic cell signaling pathways, and they function in the regulation of diverse cellular processes. While it has become clear that Ca2+ stimulates many cellular processes, such as muscle contractioncellular proliferation, gene expression, secretion of hormones and neurotransmittersexocytosis, and chemotaxis

Select the incorrect statement among the following

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Explanation

 

Ampicillin is a semi-synthetic derivative of penicillin that functions as an orally active broad-spectrum antibiotic.

A medicine which promotes the secretion of urine is called:

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An example of a psychedelic agent is:

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Explanation

(b) A psychedelic drug produce visual and auditory hallucinations, e.g, lysergic acid diethyl amide (LSD) and mescaline.

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