Notes, summaries, assignments, exams, and problems for Secondary education

Yeast

Yeast is an unicellular saprophytic fungus present in the air and on the surface of fruit. Yeast causes the spoilage of fruit, jam, honey, and is used in the production of bread, beer, and wine. It feeds on carbohydrate foods, flourishes at 25C-30C, is killed above 60C, requires moisture for growth, can live with or without oxygen, and requires time to grow. It reproduces asexually through budding, where a cell develops a bud, the nucleus moves towards the bud, the nucleus divides in two, a wall develops and divides the bud from the parent cell, and the bud separates from the cell. Yeast has granular cytoplasm, food vacuoles, vacuole, and a cell wall.

Food Preservation

Food preservation involves long term storage, preventing enzyme activity... Continue reading "Food Preservation Methods and Microbial Growth" »

The Weimar Republic and Early Nazism

After World War I, elections for a constituent assembly were held in Germany. The assembly passed a constitution, and Germany became a democratic republic known as the Weimar Republic. From its inception, the new republic faced significant opposition from extremist groups, particularly from the extreme right, who felt betrayed by the Treaty of Versailles.

Adolf Hitler and the Nazi Party

Adolf Hitler (1889-1945) emerged as the most prominent leader of this extreme right. He reorganized the National Socialist German Worker’s Party (NSDAP), commonly known as the Nazi Party, and established a paramilitary wing, the Assault Division (SA). As the leader of the Nazi Party, Hitler orchestrated a failed coup attempt,... Continue reading "The Rise of Nazism and Hitler's Dictatorship in Germany" »

Essential Vocabulary for Enhanced Communication

Dark and Gloomy

Murky: Dark and gloomy, especially due to thick mist.

Charm or Magical Object

Talisman (noun): An object that serves as a charm or is believed to confer magical powers; an amulet, fetish.

Humble Request

Suppliant: Asking humbly and earnestly.

Violent Whirlpool or Situation

Maelstrom (noun): A whirlpool of great size and violence; a situation resembling a whirlpool in violence and destruction.

Expressing Disapproval

Pejorative (adjective): Tending to make worse; expressing disapproval or disparagement.

Social Appropriateness

Propriety (noun): The state of being proper, appropriateness; (plural) standards of what is proper or socially acceptable.

Easily Recognized

Overt (adjective): Open, not... Continue reading "Vocabulary Building: 26 Essential Words for Enhanced Communication" »

Industry

Industry: The economic sector focused on large-scale production of physical goods for industrial processes or consumption.

Historical Development of Industry

Artisanal Labor (Up to the late 18th century)

Skilled craftspeople transformed raw materials into manufactured goods, limited by human capacity. Craftsmen's districts and guilds emerged in major cities.

First Industrial Revolution (Late 18th - Late 19th century)

Coal-fueled, steam-driven machines enabled large-scale manufacturing, particularly in textiles and metal goods, primarily in Great Britain.

Second Industrial Revolution (Late 19th - Late 20th century)

Mass production and assembly lines revolutionized manufacturing. New energy sources like oil and electricity boosted productivity.... Continue reading "Industrial Activities and Transformations" »

League of Nations and Post-War Settlements

The League of Nations, established on January 1, 1920, was an international institution whose primary task was to prevent future conflicts and bring global stability. It was based in Geneva, Switzerland.

• Assembly: Included all member nations.
• Council: Presided over the Assembly; initially comprised only the Allied powers.

Notably, the U.S. Senate rejected American participation, and Germany and Russia were initially barred from joining.

The Paris Peace Treaties

The peace negotiations were heavily influenced by the leaders present:

• USA (President Woodrow Wilson): Advocated for the Fourteen Points, aiming for a new world based on democracy and national self-determination.
• France (Georges Clemenceau): Sought

Key Historical Events: Early 20th Century Transformations

Prelude to Revolution: Early 20th Century Russia

• Russo-Japanese War (1904-1905): A significant defeat for Russia, exposing weaknesses in the Tsarist regime.
• Bloody Sunday (1905): Imperial guards opened fire on peaceful demonstrators in St. Petersburg, sparking widespread unrest and the 1905 Revolution.

The Russian Revolutions of 1917

The February Revolution (March 1917)

• February 23rd, 1917: Large demonstrations in Petrograd (St. Petersburg) escalated into a general strike and riots in military barracks.
• Tsar Nicholas II Deposed: The unrest led to the abdication of Tsar Nicholas II.
• Provisional Government Formed: A liberal Provisional Government was established, promising reforms and land distribution.

The Russian Revolution of 1917

Causes of the Revolution

At the beginning of the 20th century, Russia's empire extended from the Baltic to the Black Sea and from Poland to the Pacific Ocean. It was ruled by the Tsars of the Romanov dynasty and was in a state of turmoil. Dissatisfaction at the political level was due to the autocratic government of the tsars and led to political opposition made up of liberal bourgeois parties and Marxist revolutionary parties, such as the Bolsheviks.

Economic and Social Discontent

Dissatisfaction at the economic and social levels was due to the contrast between the rich minority, who owned land and factories, and the extremely poor peasants and industrial proletariat.

The Revolutions of 1905 and 1917

• In 1905, general

- Serf: A person who serves a lord and works in exchange for protection.

- Lord: A noble who provides protection and rules the land.

- Vassal: Lesser nobles/peasants who provide a service for protection.

- Arabs: The dominant social group who owned large states (latifundia).

- Berbers: They had converted to Islam and worked as livestock farmers, agricultural workers, or soldiers. They felt discriminated against.

- Muladíes: Natives of the peninsula who had converted to Islam. Most of them worked in agriculture.

- Mozarabs: Natives of the peninsula who had not converted to Islam and maintained their Christian beliefs.

- Bellatores: Those who wage war and defend the rest of society in times of war.

- Oratores: Those who pray and guarantee the salvation... Continue reading "Feudalism and Social Groups in Medieval Times" »

What is Flamenco?

The term 'flamenco' describes a type of song, a way to play the guitar, and a dance that is found essentially in Andalusia and Murcia, and even in some zones of Extremadura and Castilla-La Mancha. The word 'jondo' refers to a few classic types of songs related to the tradition of flamenco, which are different from more modern and festive versions.

The Origins of Flamenco

The origin of flamenco is uncertain: some theories believe it comes from India or Pakistan, from the Persian musician Ziryab, who worked in the courts of Cordoba in the 8th century. Others believe it has Arabic roots. There are many opinions that link flamenco with ancient Hebrew and Byzantine religious songs. And then there are others who think the Roma people... Continue reading "Understanding Flamenco: Origins and Musical Elements" »