Explanation

علم الحشرات، وہ علم جو حشرات کی ساخت سے تعلق رکھتی ہے

Entomology Insects: کیڑے مکوڑے یا حشرات 

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Entomology is the study of insects and their relationship to humans, the environment, and other organisms.

RK12-12-22

Explanation

Mitochondria is known as powerhouse of cell because it serves as site for synthesis of Adenosine Triphosphate (ATP),

the energy currency of cell, through the process of aerobic cellular respiration.

ATP serves as energy currency for different cell activities.

A cell consists of three parts:

1. The cell membrane,

2. The nucleus, and,

3. Between the two, the cytoplasm.

Explanation

• Sunlight is a good source of vitamin D.
• When our skin is exposed to sunlight, it produces vitamin D.
• It is essential for bone health, immune function, and the regulation of calcium levels in the blood.

Explanation

One of the early signs of vitamin A deficiency is night blindness (nyctalopia).

while

Vitamin K deficiency leads to uncontrolled bleeding during an injury.

A deficiency of Vitamin D results in Rickets

Explanation

A sphygmomanometer also known as a blood pressure monitor.

It is a device used to measure blood pressure.

A normal blood pressure level of 120/80 mmHg.

High-normal: 130 to 139 mmHg

High: Greater than 140 mmHg

while

mmHg stands for "Millimeter of Mercury"

Explanation

Origin of species using Natural Selection was the work of Charles Darwin.

It was published on 24 November 1859,

..

Charles Darwin's discoveries included.

four different species of giant ground sloth (some of the largest land mammals ever to have lived), a gomphothere,

and the remains of an extinct horse.

ND16-8-2023

Explanation

The percentage of oxygen in the air is about 20.95%.

The air is made up of many gases, including oxygen, nitrogen, argon, and carbon dioxide

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Nitrogen

Nitrogen is the most abundant gas in the air, making up about 78% of it. 

Argon

Argon is the third most abundant gas in the air, making up about 0.93% of it. 

Carbon dioxide

Carbon dioxide is present in trace amounts in the air, making up about 0.04% of it. 

Explanation

• Approximately 7–8% of an adult’s body weight.
• Approximately 8–9% of a child’s body weight.
• Approximately 9–10% of an infant’s body weight.

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Blood is a body fluid present in animals that consists of plasma, white blood cells, red blood cells, and platelets.

Humans have around 5 liters of blood in their bodies.

The volume of blood is approximately 5.5 liters in each adult male and 4.5 liters in female.

Explanation

When someone receives an “eye transplant,” they are given a donor cornea, the clear front part of the eye.

The corneal transplant requires a functioning retina and optic nerve to restore vision.

ND12_8_2023

Explanation

The heart consists of four chambers in which blood flows.

Blood enters the right atrium and passes through the right ventricle.

The right ventricle pumps the blood to the lungs where it becomes oxygenated.