A mitochondrion is a round to oval-shaped organelle found in the cells of almost all eukaryotic organisms. It produces energy, known as ATP, for the cell through a series of chemical reactions.

Red cells contain a special protein called hemoglobin, which helps carry oxygen from the lungs to the rest of the body and then returns carbon dioxide from the body to the lungs so it can be exhaled.

The opposite of sublimation is "deposition", where water vapor changes directly into ice—such a snowflakes and frost. It is not easy to actually see sublimation occurring, at least not with ice. One way to see the results of sublimation is to hang a wet shirt outside on a below-freezing day.

Sir Isaac Newton was born especially tiny but grew into a massive intellect and still looms large, thanks to his findings on gravity, light, motion, mathematics, and more.

Gold's chemical symbol AU is derived from the Latin word aurum, meaning gold. Some claim that the word aurum also means shining dawn due to its etymological ties to the word aurora, meaning dawn. The word gold comes from the old English word for yellow, geolu, which was derived from the Germanic word gulþa.

Gamma Rays- Gamma Rays-have the smallest wavelengths and the most energy of any other wave in the electromagnetic spectrum. These waves are generated by radioactive atoms and in nuclear explosions. Gamma-rays can kill living cells, a fact which medicine uses to its advantage, using gamma-rays to kill cancer cells

They are caused by the gravitational forces exerted on the earth by the moon, and to a lesser extent, the sun. When the highest point in the wave, or the crest, reaches a coast, the coast experiences a high tide. When the lowest point, or the trough, reaches a coast, the coast experiences a low tide.

Mars is sometimes called the Red Planet. It's red because of rusty iron in the ground. Like Earth, Mars has seasons, polar ice caps, volcanoes, canyons, and weather.

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Atoms are the smallest units of matter that have all the characteristics of an element. Atoms combine to form molecules. Atoms are composed of smaller particles known as protons, neutrons, and electrons.

Chlorophyll is responsible for the green color of many plants and algae. Seen through a microscope, chlorophyll is concentrated within organisms in structures called chloroplasts – shown here grouped inside plant cells.

The presidency of Nelson Mandela began on 10 May 1994, when Nelson Mandela, an anti-apartheid activist, leader of uMkhonto we Sizwe, lawyer, and former political prisoner, was inaugurated as President of South Africa, and ended on 14 June 1999.

The Russian Revolution of 1917 was a series of political events in Russia, involving first the overthrow of the system of autocracy, and then the overthrow of the liberal Provisional Government ( Duma), resulting in the establishment of the Soviet power under the control of the Bolshevik party.

Magna Carta was issued in June 1215 and was the first document to put into writing the principle that the king and his government was not above the law. It sought to prevent the king from exploiting his power, and placed limits of royal authority by establishing law as a power in itself.

Settling this financial problem eventually led to the First Opium War between Great Britain and China, from 1839 to 1842.

In January 1776, Thomas Paine (1737–1809) penned his famous pamphlet Common Sense, in which he urged the American Colonies to declare independence and immediately sever all ties with the British monarchy.

While queen of Egypt (51–30 BCE), Cleopatra actively influenced Roman politics at a crucial period and was especially known for her relationships with Julius Caesar and Mark Antony

The Renaissance started in Florence, Italy, a place with a rich cultural history where wealthy citizens could afford to support budding artists. Members of the powerful Medici family, which ruled Florence for more than 60 years, were famous backers of the movement.

Despite its long history, the Great Wall of China as it is exists today was constructed mainly during the mighty Ming Dynasty (1368-1644). Like the Mongols, the early Ming rulers had little interest in building border fortifications, and wall building was limited before the late 15th century.

The American revolutionary war is also known as the “U.S War of Independence”, which started in 1775 and ended in 1783 with the nativity of the U.S.A. Answer.

Erected around 2560 B.C.E. on the west bank of the Nile River, the Great Pyramid served as the tomb of the fourth-century pharaoh Khufu

The first English-language newspaper in India was published by Mrityunjay Vidyalankar . It was called Mrityunjay Vidyalankar Bengal Gazette and was first published on 29 January 1780 in Calcutta (now Kolkata). Hicky was an Irishman who had come to India to seek his fortune. He was a strong critic of the British East India Company and its administration in India. His newspaper often published articles that were critical of the Company and its officials. This made him unpopular with the Company, and he was eventually arrested and deported from India in 1782.

The Battle of Buxar was fought on 22 and 23 October 1764 between the forces of the British East India Company, led by Hector Munro, and the combined armies of Mir Qasim, Nawab of Bengal till 1764; the Nawab of Awadh, Shuja-ud-Daula; and the Mughal Emperor, Shah Alam II. The battle was fought at Buxar, a "strong fortified town" within the territory of Bihar, located on the banks of the Gangas river about 130 kilometres (81 mi) west of Patna; it was a challenging victory for the British East India Company. The war was brought to an end by the Treaty of Allahabad in 1765.

The First Battle of Panipat was fought on 21 April 1526 between the invading forces of Babur, the Timurid ruler of Kabulistan, and the much larger ruling army of Ibrahim Lodi, Sultan of Delhi. The battle was fought near the small village of Panipat, in the present day Indian state of Haryana. Babur's forces were outnumbered by Lodi's army, which was estimated to be around 100,000 men strong. However, Babur had a number of advantages, including his use of gunpowder firearms and field artillery, which were new to India at the time. He also had a more experienced army, having fought in a number of battles in Central Asia. The battle lasted for several hours, and ended with a decisive victory for Babur. Lodi was killed in the battle, and his army was routed. Babur's victory marked the beginning of the Mughal Empire in India.

1 Subhas Chandra Bose was born on January 23, 1897 in Cuttack, Orissa, India. He was an Indian nationalist whose defiance of British authority in India made him a hero among many Indians, but his wartime alliances with Nazi Germany and Imperial Japan left a legacy vexed by authoritarianism, anti-Semitism, and military failure.

Television was first introduced in India on September 15, 1959, with an experimental telecast starting in Delhi.

Explanation: The Computer system has no I.Q. of its own. It does only what it is programmed to do. It cannot take decisions of its own. A computer is diligent because it can work continuously for hours without getting any errors or without getting grumbled. The accuracy of a computer is consistently high and its level of accuracy depends on its design. A computer can perform any task if, it can be broken down into a series of logical steps. Therefore, a computer is versatile.

Explanation: Charles Babbage is known as the father of computers. Charles Babbage designed and built the first mechanical computer and Difference Engine.