MCQ Bank

Neptunium-237 has a relatively short half-life compared to primordial nuclides like uranium or thorium, meaning it has decayed away and is no longer naturally present on Earth in significant quantities.

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Q36

The annual dose of man-made radiation received by people arising from medical diagnoses ranges from ______________

A) 0.06 mSv to 3.0 mSv
B) 0.04 mSv to 1.0 mSv
C) 0.05 mSv to 2.0 mSv
D) 0.07 mSv to 4.0 mSv

AI Explanation

The typical annual effective dose of artificial radiation received by individuals from medical diagnostic procedures generally falls within the range of 0.06 mSv to 3.0 mSv, varying by region and healthcare access.

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Q37

_____________ is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semipermeable membrane.

A) None of these
B) Blotting
C) Ultrafiltration
D) Filter paper

AI Explanation

Ultrafiltration is a form of pressure-driven membrane filtration that separates materials based on molecular size through a semipermeable membrane.

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Q38

RPC stands for_________

A) Reverse-phase chromatography
B) None of these
C) Right-phase chromatography
D) Reverse-phase chemistry

AI Explanation

RPC stands for Reverse-Phase Chromatography, a widely used liquid chromatography technique employing a non-polar stationary phase and a polar mobile phase.

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Q39

ELISA stands for ___________.

A) None of these
B) Enzyme-linked immunosorbent agent
C) Enzyme-linked immunosorbent acid
D) Enzyme-linked immunosorbent assay

AI Explanation

ELISA stands for Enzyme-Linked Immunosorbent Assay, a standard biochemical plate-based technique used to detect and quantify substances like peptides, proteins, and antibodies.

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Q40

Already exist when a decision on control has to be taken is known as ___________

A) Emergency exposure
B) Existing exposure
C) None of these
D) Planned exposure

AI Explanation

Existing exposure refers to radiation exposure that already exists when a decision on the need for control has to be taken, such as exposure to natural background radiation.

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Q41

Exposure due to fallout from past testing of nuclear weapons and generation of electricity in nuclear power plants constitutes less than ________.

A) 0.4%
B) 0.3%
C) 0.2%
D) 0.5%

AI Explanation

Radiation exposure resulting from historical nuclear weapons fallout and nuclear power generation typically constitutes less than 0.5% of the total public exposure.

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Q42

In the case of antibody-antigen binding the inverted dissociation constant is used and is called ____________ constant.

A) Antigen
B) Affinity
C) Antibody
D) Diffinity

AI Explanation

The affinity constant is defined as the reciprocal or inverse of the dissociation constant for an antibody-antigen binding reaction, reflecting the strength of the interaction.

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Q43

Short-lived electrical events called ____________occur in several types of animal cells.

A) Plain potentials
B) Mechanical Potentials
C) Action potentials
D) Electrical potentials

AI Explanation

Action potentials are brief, rapid electrical impulses generated across the cell membranes of excitable animal cells, such as neurons and muscle cells.

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Q44

__________is a protein visualization technique applied in combination with affinity chromatography.

A) Western Blotting
B) Northern Blotting
C) Immunoblotting
D) Southern Blotting

AI Explanation

Western blotting is a common protein detection technique frequently paired with affinity chromatography to identify specific target proteins from a complex mixture.

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Q45

In ____________ relatively large nuclei of uranium or plutonium, are split.

A) Nuclear fission
B) Nuclear energy
C) None of these
D) Nuclear fusion

AI Explanation

Nuclear fission is the nuclear reaction in which heavy atomic nuclei, such as those of uranium or plutonium, split into smaller fragments accompanied by a large release of energy.

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Q46

ICRP stands for_______________

A) International Committee on Radiation Protection
B) International Committee on Radiation Production
C) International Committee on Radius Protection
D) International Committee on Rodon Protection

AI Explanation

ICRP stands for the International Commission on Radiological Protection (commonly referenced as the International Committee on Radiation Protection), an independent organization that provides recommendations and guidance on radiation safety.

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Q47

Radiation arising from human activities typically accounts for about _________ of public exposure.

A) 90%
B) 70%
C) 20%
D) 50%

AI Explanation

Human-made sources of radiation, including medical procedures and industrial activities, typically contribute about 20% of the total public radiation exposure.

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Fats and oils are esters of fatty acids with:

A) Glycerol
B) Monohydric Alcohol
C) Phosphoric acid residue
D) Triglycerides

AI Explanation

Fats and oils are triglycerides, which are esters formed from glycerol and three fatty acid molecules.

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The correct statement concerning essential fatty acids is:

A) The most essential fatty acid is sphingosine
B) There are no essential fatty acids for human beings
C) Essential fatty acids are only found in animal fat
D) Linoleic Acid and Alpha Linolenic Acid are two fatty acids that must be ingested

AI Explanation

These are essential fatty acids because humans lack the enzymes to synthesize them and must obtain them from the diet.

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Fatty acids that occur in natural fats usually contain an even number of carbon atoms ranging from:

A) 4 to 38 carbons (C4 to C38)
B) 4 to 32 carbons (C4 to C32)
C) 4 to 30 carbons (C4 to C30)
D) 4 to 36 carbons (C4 to C36)

AI Explanation

Natural fatty acids commonly have an even number of carbon atoms, typically ranging from 4 to 32 carbons.

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Glycolipids (glycosphingolipids) contain:

A) Lipids containing sphingosine, and carbohydrate
B) Lipids containing fatty acid
C) Lipids containing fatty acid, sphingosine, and carbohydrate
D) Lipids containing fatty acid and carbohydrate

AI Explanation

Glycolipids are glycosphingolipids composed of a fatty acid, sphingosine, and a carbohydrate moiety.

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When double bonds are present in the fatty acid chain, they are nearly always in the:

A) cis configuration
B) cis-trans configuration
C) trans-cis configuration
D) trans configuration

AI Explanation

In natural fatty acids, double bonds are almost always in the cis configuration, which introduces a bend in the carbon chain.

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The essential fatty acid linoleic acid, 18:2 Δ9, 12 is:

A) ω-2 fatty acid
B) ω-3 fatty acid
C) ω-6 fatty acid
D) ω-5 fatty acid

Answer abhi available nahi — is question ka AI/admin se answer milne ka intezar hai.

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The 16-carbon saturated palmitic acid is abbreviated:

A) 16:3
B) 16:2
C) 16:0
D) 16:1

Answer abhi available nahi — is question ka AI/admin se answer milne ka intezar hai.