Notes, summaries, assignments, exams, and problems for Baccalaureate

FIRST CONDITIONAL If/unless + present simple, will+infinitive. Possible accio futura
SECOND CONDITIONAL If + past simple, would + infinitive imaginarias o improbables futures o presents accions
THIRD CONDITIONAL If+had past participle, wold have+ past participle. Accions dubtoses en el passat en el pasat.(hagues+hauria)
wish:wish+past sinple=present situation that the speaker is unhappy about.he wishes his friends were here now
wish+past perfect= se arrepiente de una accion pasada.i wish he had called me.
wish+could/would+base form=desire to something to happen in the future.i wish i could go to university

CHARACTERS.
The gallery of characters who appear in LSI denotes the author's strong concern for human beings. Some of the characters acquire highlighted other elements of the
novel: the landscape has value in the relationship that the characters have with him: the universe
depends on the nature theme, ideology and the relationships between the characters, the society presented is conditioned by the lifestyle of each other, and so on. The Holy Innocents is thus a novel of character: the axis from which depends the whole anatomy, the characters. Quantitatively and qualitatively, the largest proportion of the text reserves the portrayal of human figures.

2.7.1. Classification
The number of characters who move through the farm is considerably... Continue reading "The characters in "The Innocents". Miguel Delibes" »

ELECTRICAL INSTALLATIONS:
The electricity used to meet our energy needs (housing, buildings and industries) But there are serious dangers such as fires and electrocucions if facilities do not meet the appropriate security.
Low Voltage Electrotechnical Regulations (REBT) technical conditions and guarantees must be met by electrical installations connected to a low voltage supply in order to:
-Preserve the safety of persons and property.
-Ensure the normal operation of these facilities and prevent disruptions that could cause other facilities and prevent disruptions that could cause other facilities and services.
-Contribute to the technical reliability and efficiency of economic facilities.
Complementary technical instructions (ITC - BT)... Continue reading "Domestic Electrical Installations" »

Question 6: Vector Spaces and Subspaces

Finding the Zero Vector

1. Take the general scalar multiplication formula r ◦ (a, b, c, d).
2. Plug in r = 0.
3. Read off the resulting matrix; that is the zero vector. (Note: 0 ◦ anything = the zero vector in any vector space.)

Proving a Subset U is a Subspace

1. Identify which entries of U are locked (fixed numbers) and which are free (variables).
2. Check if the zero vector (from part a) fits the locked entries of U.
3. Take two general elements of U (using the same locked numbers but different free letters) and combine them with addition. Check that the locked entries stay locked.
4. Take one general element of U and scale it with ◦. Check that the locked entries stay locked.
5. If all three subspace conditions hold, then U

... Continue reading "Linear Algebra: Subspaces, Kernels, and Matrix Maps" »

Art and Society: Analysis and Exercises

Part A: Maya Dahir and Art History

• A3. Maya Dahir’s Artwork: TRUE – "Despite initial criticism, her work later gained recognition."
• A4. The Purpose of Embracing Our: FALSE – "Held an exhibition in the US in 2022 to encourage young artists to explore global issues."
• A5. Art’s Influence On: FALSE – "From ancient pyramids to Internet memes, art has always influenced society and culture."
• A6. Picasso’s Painting Inspiration: FALSE – "Bringing the stories of civilian experiences from the war to the world’s attention."

Vocabulary Definitions

• A7.1: "Very old" – Ancient
• A7.2: "Appreciation" – Recognition
• A8.1: "Very difficult experiences" – Struggles
• A8.2: "People who give…" – Supporters

Part B:

... Continue reading "Art, Society, and Urban Transport Improvements" »

## Amino Acids and Peptides
### 1. \alpha-Amino Acids: Structure and Classification
Amino acids are the fundamental building blocks of proteins. An **\alpha-amino acid** consists of a central \alpha-carbon atom bonded to four distinct groups: an amino group (-\text{NH}_2), a carboxylic acid group (-\text{COOH}), a hydrogen atom (-\text{H}), and a variable side chain (-\text{R}).
#### Classification based on R-group polarity:
 * **Non-polar / Hydrophobic:** Side chains are aliphatic hydrocarbons or aromatic rings (e.G., Alanine, Valine, Phenylalanine).
 * **Polar / Uncharged:** Side chains contain hydrophilic groups like hydroxyls or amides (e.G., Serine, Glutamine).
 * **Acidic / Negatively Charged:** Side chains contain an extra carboxyl group... Continue reading "Bioelements and their importance" »

1. Single-Cell Protein & Alcohol Production

Industrial fermentation harnesses microbial metabolism under controlled conditions to synthesize biomass and primary metabolites on a massive commercial scale.

                  [Raw Material / Carbon Source]
                                 │
                                 ▼
         ┌──────────────────────┴──────────────────────┐
         ▼                                             ▼
 [Biomass Production]                       [Metabolite Production]
  e.g., Single-Cell Protein                  e.g., Ethanol Fermentation
  (Cell body is the product)                 (Secreted fluid is the product)

... Continue reading "Industrial Fermentation: Microbes, Bioreactors, and Methods" »

Lecture 1: Introduction and Security Concepts

The CIA Triad

• Confidentiality: Limits access to authorized users. A breach results in unauthorized disclosure.
• Integrity: Prevents unauthorized modification. A breach results in an altered document.
• Availability: Ensures timely access. A breach results in a Denial of Service (DoS) attack.

Additional Security Objectives

• Authenticity: Verifies that the data or sender is real and trustworthy.
• Accountability: Ensures actions are traceable to specific entities.
• Non-repudiation: Ensures a party cannot deny their actions, often achieved via digital signatures.

Kerckhoffs's Principle

Security should rely only on the secrecy of the key, not the secrecy of the algorithm. The system remains secure even if the attacker... Continue reading "Modern Cryptography and Data Security Fundamentals" »

Essential Film and Cinema Vocabulary

• Come out: Estrenarse
• Compose: Componer
• Cut off: Interrumpir
• Dragged: Se alargó demasiado
• Relate to: Identificarse con
• Starred in: Protagonizó
• Turn up: Subir (volumen)
• Appeals to: Atrae a
• Audience: Público
• Broadcast: Emitir
• Catchy: Pegadizo
• Letdown: Decepción
• Live performance: Actuación en vivo
• Long-running: De larga duración
• Outstanding: Excepcional
• Overrated: Sobrevalorado
• Recording: Grabación
• Remake: Nueva versión
• Stunning: Impresionante
• Venue: Lugar
• Worth seeing: Que vale la pena ver

Going to the Cinema: Pros and Cons

Many people enjoy going to the cinema, while others prefer watching films at home. There are both advantages and disadvantages to this experience.

The Advantages

On the one hand, going to the cinema can... Continue reading "Cinema vs Home Viewing: Pros, Cons and Film Review Tips" »

Part 1: Word-Formation Examples

1. Reversative verb: uncork — to reverse the state of being corked/sealed.
2. Locative noun: bakery — a noun denoting a place where something happens or has a specific function; here, a place where baking occurs.
3. Denominal verb: cannibalize — a verb derived from a noun (cannibal).
4. Diminutive noun: duckling — a noun with the diminutive suffix -ling, indicating a small or young duck.
5. Attenuative adjective: None from the set. An attenuative adjective expresses a lessened degree of a quality (e.g., greenish). Indecisive is negative/privative, not attenuative.
6. Repetitive verb: replay — a verb with the prefix re-, indicating an action done again.
7. Collective noun: aristocracy — a noun referring to a collective social

... Continue reading "Word-Formation Examples and Key Morphology Terms" »