Explanation

An ornithologist is someone who studies ornithology the branch of science devoted to birds.

Ornithology means پرندوں کا مطالحہ

ND5-5-2023

Explanation

New born child has 300 bones.

Longest bone: Femur (thigh bone)

Shortest: Stapes (one of the 3 small bones inside the ear)

Human head has 22 bones

Explanation

In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube.

Water freeze at 32 F and boils at 212 F

Explanation

The planet that revolves the slowest around the Sun is Neptune.

It takes Neptune approximately 165 Earth years to complete one orbit around the Sun.

This slow movement is due to Neptune's large distance from the Sun, which is nearly 4.5 billion kilometers.

Neptune is the farthest planet.

It was visited by the spacecraft Voyager 2.

It's is a very windy place.

It has six rings.

It has 14 moons.

Explanation

• A cataract is a clouding of the lens in the eye that affects vision.
• It is a common age-related condition that can cause blurry vision, double vision, and sensitivity to light.
• Cataracts can be treated with surgery to remove the cloudy lens and replace it with an artificial lens.

Explanation

The main constituent of hemoglobin is iron.

Hemoglobin transports oxygen and exhibits a quaternary protein structure.

Iron is crucial for hemoglobin formation; its deficiency can impact hemoglobin production.

Heme in hemoglobin is protoporphyrin IX.

Infants reach adult hemoglobin levels by the end of their first year.

Ferric ions are not part of hemoglobin.

Hemoglobin is found dissolved in plasma.

Explanation

The cell was first coined by an English scientist Robert Hooke in the year 1665.

Later the cell theory was given by Matthias Schleiden and Theodor Schwann.

Explanation

Electric power: Rate of energy transfer.

It is measured in watts (W), or one joule per second.

Energy/Work: Measured in joules (J).

Charge: Measured in coulombs (C).

Pressure: Measured in pascals (Pa).

Electric current: Measured in amperes (A).

Electric resistance: Measured in ohms (Ω).

Temperature: Measured in kelvin (K).

Torque: Measured in newton metres (N m).

Velocity: Measured in meters per second (m/s).

Acceleration: Measured in meters per second squared (m/s²).

Explanation

• The nervous system is the body system that controls and coordinates the functions of all other organ systems.
• It allowing for integration and regulation of various bodily functions.
• It consists of the brain, spinal cord, nerves, and sensory organs.

Explanation

Henry Cavendish - He discovered hydrogen gas and the composition of water contains two parts of hydrogen and one part of oxygen.

Symbol: H

Atomic mass: 1.00784 u

Atomic number: 1

Named by: Antoine Lavoisier (1783)