Explanation

• Pantothenic acid, also known as vitamin B5, is a derivative of Coenzyme A (CoA).
• The main functions of CoA is the activation and transfer of acyl groups, which involves the reactive sulfhydryl group through the formation of thioester linkages with acyl groups.
• Retinol and Retinoic acid are associated with vitamin A.
• Pyridoxine is associated with vitamin B6.

Explanation

Human placental lactogen and leutotrophic is a hormone responsible for lactation

Human placental lactogen (hPL) is a hormone released by the placenta during pregnancy.

Leutotrophic hormone stimulates the growth of the milk gland and secures milk only after delivery of the fetus plus the placenta. 

It gives nutrition to the fetus.

It also stimulates milk glands in the breasts for breastfeeding.

Additional information:

Lactation is the process of producing and releasing milk from the mammary glands in your breasts.

It begins in pregnancy when hormonal changes signal the mammary glands to make milk in preparation for the birth of your baby.

Explanation

Rocket works on the principle of conservation of linear momentum.

conservation of linear momentum and third law of motion

The hot gases acquire momentum in the backward direction

& the rocket acquires an equal amount of momentum in the forward direction.

Explanation

The process in which the change of vapor or gas into liquid is known as condensation

Some examples of water condensation:

• Morning dew on the grass.
• Water droplets on the outer surface of cold drink bottle.
• Foggy car windows

Additional information:

The process of change of state from solid to liquid is called melting

Evaporation is the conversion of liquid into its vapor, below the boiling point of liquid.

Explanation

In Mendel's pea plant experiments,

When he crossed purebred pea plants with contrasting traits (like purple and white flowers),

The F1 generation offspring all exhibited the dominant trait (purple flowers in this case).

The recessive trait (white flowers) disappeared in the F1 generation but reappeared in the F2 generation when the F1 plants self-fertilized. T

his reappearance of the recessive trait in the F2 generation confirmed that the recessive allele was still present in the F1 generation, just masked by the dominant allele. 

Explanation

Confusion

Urdu is the national language of Pakistan since 14 August 1947.

In 1954 Urdu and Bengali were declared the national language of Pakistan.

The 1973 Constitution recognizes Urdu as Pakistan’s only national language. 

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Urdu declared as official language In subcontinent in 1832

Explanation

Skin is the external largest organ of the human body

It is a vital organ with a fleshy surface covered with hair, nerves, glands, and nails.

It covers your whole body and acts as a barrier between the outside and the inside environment.

while 

The largest solid internal organ is the liver

Explanation

The blue colour of the sky is due to the scattering of light by the atmospheric particles.

Light of shorter wavelengths scatters more than the light of longer wavelengths and

the violet colour has a shorter wavelength, but our eyes are more sensitive to blue light. Hence, the colour of a clear sky is blue.

Explanation

Compound: a substance that is made up of more than one type of atom bonded together.

Additional Information:

Explanation

Adjective is a word tells which one, what kind or how many. 

An adjective modifies or describes a noun or pronoun