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

The Pancreas

Long, greyish-white organ behind and underneath the stomach. Functions: Produces hormones (insulin & glucagon) that regulate the amount of glucose in the bloodstream. Secretes pancreatic juice which contains digestive enzymes & sodium bicarbonate.

How Digestion Works

Most digestive processes take place in the small intestine. Digestion produces nutrients that cells need:

• Monosaccharides (simple sugars): obtained from complex carbohydrates.
• Glycerol & fatty acids: obtained from fats.
• Amino acids: obtained from proteins.

Nutrient Absorption

Nutrients pass from the small intestine into the bloodstream through absorption and then are delivered to cells by the blood. The inside wall of the small intestine is covered in folds that... Continue reading "Understanding the Pancreas and Respiratory System" »

What was the social structure of cities? As during all the Middle Ages, there were big differences among the population.

The Upper Classes

The upper classes were formed by two groups.

• The upper nobility continued having their privileges, and some moved to the cities and lived in palaces.
• A new social class emerged: the wealthy bourgeoisie. These were the rich merchants, bankers and leaders of the important guilds. This group normally formed the city government.

The Lower Classes

The lower classes were formed by the rest of the population.

• The commoners formed the majority. There were small craftsmen, merchants and servants. They lived modestly.
• The lower nobility also belonged to this group. As they didn't work and didn't possess any land, they were

Contracts

A contract is a legally binding promise (written or oral) by one party to fulfill an obligation to another party in return for consideration.

Elements of a Contract

• Offer and Acceptance
• Consideration
• Intention to be legally bound
• Legal capacity
• Formalities

Societies

Civil Society

• Contract between two or more persons
• Obligation to contribute money or goods
• Profits shared among members
• No minimum capital
• Losses and profits distributed
• Minimum of two partners

Anonymous Society

• Dedicated to the exploitation of an economic activity
• Capital divided into shares
• Minimum capital of 60k
• Own legal personality
• Losses in proportion to contribution
• Quarterly VAT

Limited Liability Company

• Capital divided into equal parts, not shares
• Minimum capital of 3.5k
• Partners exempt

Distinguishing Properties and Substances

Explain the differences between the following concepts:

1. Physical vs. Chemical Properties

   Physical properties depend only on the substance itself (e.g., density), whereas chemical properties depend on the interaction with other substances (e.g., reactivity).

2. General vs. Specific Properties

   General properties are not useful for distinguishing types of matter (e.g., mass), while specific properties are useful for identification (e.g., boiling point).

3. Pure Substances vs. Mixtures

   Pure substances have a uniform composition in any of their parts (e.g., water). Mixtures are formed by two or more pure substances combined physically (e.g., saltwater).

4. Simple Substances vs. Compounds

   Simple substances (elements) have only

The Nephron

The nephron is the functional unit of the kidneys, responsible for filtering blood and producing urine. Each kidney contains over one million nephrons.

Parts of the Nephron

• Bowman's Capsule: Surrounds a tiny network of capillaries.
• Tubule: Shaped like a handle, the tubule of several nephrons empties into a larger tube called a collecting duct.
• Collecting Ducts: Move urine into the renal pelvis.

Kidney Function

1. Filtration: Molecules exit the bloodstream and enter the Bowman's capsule, forming filtrate.
2. Reabsorption: As filtrate travels through the tubule, some molecules are reabsorbed by the capillaries. Glucose, 99% of water, a small amount of urea, and salts return to the blood.
3. Excretion: The remaining filtrate forms urine, which is excreted

Biblical Divisions

The Pentateuch (The Law)

• Genesis
• Exodus
• Leviticus
• Numbers
• Deuteronomy

Wisdom Literature

• Job
• Psalms
• Proverbs
• Ecclesiastes
• Song of Songs (or Song of Solomon)

Major Prophets

• Isaiah
• Jeremiah
• Lamentations
• Ezekiel
• Daniel

Key Biblical Concepts

Prophecy

Foretelling the future through words.

Typology

Foretelling the future through things or events.

The Six C's of Biblical History

1. Creation
2. Covenant
3. Comeback
4. Christ
5. Church
6. Consummation

The Book of Genesis

Creation

The six days of creation:

1. Light
2. Sea & Sky
3. Dry Land & Plants
4. Sun, Stars, & Moon
5. Birds & Sea Creatures
6. Land Animals & Man

Image of God: Holiness

The Flood Narrative

• Duration: 40 days and 40 nights (rain) / 1 year and 1 day (total duration in the ark).
• Reason: God saw the great evil that existed on

Digestive System Diseases

Oral Cavity

• Tooth Decay

  Tooth enamel is destroyed by acids produced by bacteria that break down food fragments stuck between teeth. Tooth decay causes cavities to form, and bacteria in the cavities can then destroy the teeth.

• Gingivitis

  Inflammation of the gums caused by vitamin deficiencies or poor dental hygiene.

Stomach

• Gastroenteritis

  An infection affecting the stomach or intestine, caused by bacterial toxins. Symptoms include diarrhea, vomiting, abdominal pain, and fever.

• Gastritis

  Irritation of the gastric mucosa causing pain, acidity, and a burning sensation. Often caused by smoking, drinking alcohol, eating spicy foods, or taking medicine.

• Stomach Ulcer

  Damage to the gastric mucosa which causes the stomach cavity to come

LESSICO 6

Film and Media Terminology

• Accountability: Responsible for your decisions or actions and expected to explain them when asked.
• Set the agenda: A list of items to be discussed at a meeting.
• Archival footage: Material from the past that can be used in other films.
• Audio engineer: A person whose job is to alter and balance the levels of different sounds as they are recorded.
• Axe: To get rid of a service.
• Back: Give help or support.
• Ban: Decide or say that something is not allowed.
• Bid: Offer a service for a price, in competition with others.
• Boom: Increase in economic activity.
• Expose corruption: Reveal illegal or dishonest behavior.
• Cover-up: Action taken to hide a mistake from the public.
• Lack of credibility: Absence of the quality that makes people

Ethical Considerations in Psychological Research

One ethical consideration in psychological research is the use of deception. Deception occurs when a participant is not made fully aware of the purpose of a study or is intentionally misinformed. Researchers often use deception to hide the true aim of an experiment. If participants knew the aim, they might demonstrate demand characteristics, either trying to give the researchers what they want or behaving in a way that makes them look their best, a phenomenon known as the social desirability effect.

Deception is problematic because it undermines the concept of informed consent. It violates the trust between a researcher and a participant. Additionally, it increases the chance that a participant... Continue reading "Ethical Deception in Research & Multi-Store Memory Model" »