Explanation

The enzyme that synthesizes DNA,

DNA polymerase can only add nucleotides to an already existing strand or primer of DNA or RNA that is base paired with the template.

ND5-07-2023

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 retina is a thin layer of tissue that lines the back of the eye on the inside.

It is located near the optic nerve.

The purpose of the retina is to receive light that the lens has focused,

convert the light into neural signals,

and send these signals on to the brain for visual recognition

Explanation

Vitamin A deficiency can cause both loss of appetite and night blindness.

It is also known to increase susceptibility to infections, including those in the throat. 

Night blindness

This is one of the earliest signs of vitamin A deficiency.

It is the inability to see well in low-light conditions, which is caused by the lack of a specific pigment needed for the retina to function properly. 

Loss of appetite

Vitamin A is involved in the health of the receptors for taste and smell.

When vitamin A is deficient, these senses can be altered, which leads to a reduced appetite and difficulty consuming enough nutrients. 

Explanation

Biological death of the patient means death of tissues of the brain.

Explanation

How does the Navstar GPS work for different applications? (5)

The Navstar GPS works by using a constellation of satellites that send signals to GPS receivers on the ground, allowing them to calculate precise location coordinates.

It is used in various applications like navigation, mapping, surveying, military operations, and location tracking for vehicles and personal devices.

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Explanation

• The de-oxygenated blood from the heart comes to the lungs through the Pulmonary artery
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• The deoxygenated blood returns from the body to the right atrium and from there enter the right ventricle that pumps it to the lungs through the main pulmonary artery (pulmonary trunk).
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• The pulmonary veins transport oxygenated blood back to the heart from the lungs
  

Explanation

The presence of lactic acid in milk is due to the fermentation of lactose caused mainly by lactic bacteria

Explanation

Pyrimidine: A nitrogenous base similar to benzene (a six-membered ring) and includes cytosine, thymine, and uracil as bases used for DNA or RNA.

Adenine is a purine nucleobase

Adenine, guanine, and cytosine are common nitrogenous bases present in both DNA and RNA

Explanation

Deficiency of Iodine causes Goitre disease.

Thyroxine is a hormone that causes Goitre in the human body.