Thursday, October 30, 2008

Biology

Photocynthesis Notes

Energy: The ability to perform work

Work: The ability to change or move matter against other forces.

WHAT DO CELLS NEED ENERGY FOR?
  • active transport
  • growth & development
  • repair
  • reproduction

HOW DO CELLS OBTAIN THEIR ENERGY?

Autotrophs: Cells or organisms that make their own food. Ex. plants, some protists, some prokaryotes

Heterotrophs: Cells or organisms that CAN NOT make their own food. Obtain energy by eating other organisms. Ex. animals, fungi, some protists

Note: auto. & hetero. synonymous to producer & consumer

Glucose: "the CELLULAR food"

  • C(16)H(12)O(6)
  • A simple monosaccharide

Cells break down glucose to make ATP

ATP: Adenosine TriPhosphate

  • The energy molecule of cells
  • It is the "fuel" cells use to function

Ecological Rules

  • Everything is connected to everything else
  • Everything must go somewhere
  • Nature knows best
  • There's no such thing as a free lunch

Ecological Pyramids

  • Show the relationship between producers & consumers at different levels in an ecosystem
  • At each level of the energy pyramid, 90% is "lost" Energy through heat, being eaten, digested & used to make ATP
  • Remaining 10% energy can be transferred to the next highest trophic level

Food Chains: shows the series of steps through which energy is transferred

The sun is the ultimate source of energy for ecological pyramids-providing energy to autotrophs to produce their own food!

WHERE DOES PHOTOSYNTHESIS TAKE PLACE IN THE CELL?

In the chloroplast: green organelle containing chlorophyll in which photosynthesis occurs

Light Dependent Reaction: (light is required)

  • sunlight/radiant light must be present for this to occur
  • takes place in the grana "green stacks of pancakes"

Wednesday, October 29, 2008

World Geography

Political, Urban and Economic Geography

Governmental units of the world can be described in either political or geographic terms. Generally, we use the political term state to describe an independent unit that occupies a specific territory and has full control of its internal and external affairs.

Nation refers to a group of people with a common culture living in a territory and having a strong sense of unity.

All countries must choose a type of government. In a Democracy, citizens hold political power either directly or through elected representatives.

In a Monarchy, a ruling family holds political power and may or may not share the power with citizen bodies.

In a Dictatorship, an individual or group holds complete political power.

Communism is a system in which nearly all political power and means of production are held by the government.

Three geographic characteristics are important in describing a country: size, shape, and relative location.

Boundaries or borders set the limits of the territory controlled by a state. A natural boundary is based on physical features of the land, such as rivers, lakes, or mountain chains.

An artificial boundary is a straight line generally following latitude or longitude lines.

The three most common local units of government are cities, towns, and villages.

Today, almost half of the population of the world lives in cities. The built-up area around the central city may include suburbs, which are political units touching the borders of the central city or touching other suburbs that touch the city.

Smaller cities or towns with open land between them and the central city are called exurbs.

The city, its suburbs, and exurbs, link together economically to form a functional area called a metropolitan area.

The dramatic rise in the number of cities and the changes in lifestyle that result are called urbanization.

Around the world, cities have certain geographic characteristics in common. Many cities are found in places that allow for good transportation, such as places on a river, lake or coast.

Urban geographers also study land use in cities. Basic land use patterns found in all cities are: residential, areas used for single-family housing and apartment buildings; industrial, areas reserved for manufacturing of goods; and commercial, areas used for private business and the buying and selling of retail products.

The core of a city is almost always based on commercial activity. This area of the city is called the central business district. (CBD)

The city is the center of a variety of functions. Five of these functions are: shopping, entertainment, government services, educational, and cultural activities.

An economy consists of the of the production and exchange of goods and services among a group of people.

In a traditional economy, people trade goods and services without exchanging money.

In a command economy, the production of goods and services is determined by a central government, which usually owns the means of production.

In a market economy, the production of goods and services is determined by the demand from consumers.

No matter how small or large a business is, it operates at one of four levels of economic activity. Primary activies involve gathering raw materials such as timber for immediate use or to use in the making of a final product; secondary activities involve adding value to materials by changing their form; tertiary activities furnish personal or professional services; quaternary activities provide information, management, and research services by highly trained persons.

When geographers study the economy of a country, they look closely at the location, quality, and quantity of its natural resources. They divide natural resources into three basic types. Renewable resources can be replaced through natural process, nonrenewable resources cannot be replaced once they have been removed from the ground and inexhaustible energy resources are used for producing power that are unlimited in quantity.

A nation's infrastructure consists of the basic support systems needed to keep and economy going.

Geographers use a variety of standards to make comparisons among economies. One is per capita income, the average amount of money earned by each person in a political unit.

A commonly used statistic to measure the economy of a country is the gross national product (GNP), the total of all goods and services produced by a country over a year or some other specified period of time.

The value of goods and services produced within a country in a period of time is referred as the gross domestic product. (GDP)

English

Literary Terms

  1. Epic- A long narrative poem written in elevated style which presents the adventures of characters of high position and episodes which are important to the history of a race or nation
  2. Fable- A brief story which leads to a moral, often using animals as characters
  3. Figurative Language- Language employing one or more figures of speech (simile, metaphor, imagery, etc.)
  4. Flashback- The insertion of an earlier event into the normal chronological order of a narrative
  5. Foreshadowing- The presentation of material in such a way that the reader is prepared for what is to come later in the work
  6. Frame Device- A story within a story
  7. Genre- A major category or type of literature
  8. Imagery- The use of figures of speech to create vivid images
  9. Irony- The use of words to convey the opposite of their literal meaning; or incongruity between What is expected and what actually occurs
  10. Metaphor- A direct comparison of two different things
  11. Mood- The emotional atmosphere of a work; or, the author's emotional attitude toward the subject
  12. Myth- A traditional story presenting supernatural characters and episodes which help explain natural events
  13. Narrative- A story or narrated account
  14. Ominscient Narrator- A narrator who is able to know, see and tell all, including the inner thoughts and feelings of the characters
  15. Paradox- An apparently contradictory statement which actually contains some truth
  16. Paraphrase- A restatement of a text in a different form or in different words, often for the purpose of clarity
  17. Personification- Endowing non-human objects or creatures with human qualities or characteristics
  18. Plot- The action of a narrative or drama
  19. Point of View- The vantage point from which a story is told
  20. Resolution- The falling action of a narrative; the events following the climax

Tuesday, October 28, 2008

Journalism

Sports Writing

Preparation for Sports Writing
  • Backgrounding-finding out information about the sport, the team, the coaches, the events & the issues you'll be covering
  • Read other articles
  • Know the rules & statistics
  • Know the coaches & players
  • Conduct interview
  • Get anecdotes or colorful stories

Pregame Stories

  • Preview of upcoming game that compares team & players, discusses team records & gives lineups
  • Capture anticipation & significance of the matchup
  • Find an angle that the student body might not know about (school game)
  • Interview, historical features, short human interest stories

Pregame Stories: Advances

  • Lazy journalists only announces time & place, team records, statistics & a few quotations from coaches
  • This formula-stale
  • More emotion since the game will be old news by the time it's printed

Included In Advances

  • Significance of matchup (ex. Will this game decide who will go to play-offs?)
  • Team records, background of the rivalry & last year's score
  • Key players, injuries & starting lineups
  • Styles of play

Also remember to...

  • Involve the community by including advances on minor sports
  • Both male & female sports
  • Promote pep rallies & halftime shows
  • An activity draws more fans only if it's given more coverage

Coverage On-the-Scene Reporting

  • Press row- a row of seats reserved for the press, usually courtside
  • Press box- a group of seats with a good view of the entire field
  • Job depends on the ability to see all of the action with minimum distractions
  • Take fans where they normally can't go, the sidelines, field, practices & locker rooms
  • Interview athletes & coaches
  • Provide an insight into good & bad news, why a particular play, why fumble
  • Report objectively
  • Avoid "Homers"-favors the home team
  • give brief description or explanation on the things that stands out-things that call for attention
  • Key plays may call for more elaboration
  • Get good quotations-ask tough questions even if it angers the coach or the player

Postgame: Writing the Story

  • Capture emotion, develop it: include description & quotations. Make emotion the theme of your story. Describe the pure drama of the contest
  • Make reader see your story
  • Use all senses
  • Instead of offering your opinion on how they must feel, ask players & put their quotations, show how they feel

Effective Sportswriters

  • Use crisp, lively words-especially verbs-to describe action
  • Vivid details & imaginative style
  • Avoid jargon & cliches

Monday, October 27, 2008

Notes

A function is a relationship between input & output

Domain- set of #'s in an ordered pair, x's (x,y)

Range- 2nd # in ordered pairs, y's (x,y)

Inverse- switching x & y; ex. (2,3) inverse: (3,2)

Algebra I

Solving Multi-Step Equations
  • Undo operations by working backwards in reverse order of operations

*get rid of any add/subtractions first using inverse operations

*write remaining equation

*get rid of any multi/divisions using inverse operations

Ex. 7m-17=60

7m-17+17=16+17

7m=77

7m/7=77/7

m=11

Check: 7(11)-17=60

Health

Ch. 8 Weight Management & Eating Behaviors

I. Food & Your Body Weight
a. What you eat & how much you eat are affected by hunger & appetite
i. Hunger is the body's physical response to the need for food
ii. Appetite is triggered by many factors: sight or smell, time of day or year
b. Personal choices as well as friends, traditions, ethnic background, availability of food, and emotions affect food choices
i. smell & taste
ii. Mood
iii. Family traditions, ethnic backgrounds
iv. Social & religious occasions
v. Health concerns
vi. Advertising & cost, availibility
c. Food Provides Energy
i. Carbohydrates, fats, proteins, are energy giving nutrients
ii. Calories are the amount of energy in certain foods
iii. Calories needed depends on how much energy the body is using
iv. Basal metabolic rate is the minimum amount of energy needed to keep you alive
v. Breakfast is the most important meal of the day
d. Balancing energy intake with energy used
i. Overweight is the term used to describe a person who is heavy for his or her height. You're 10% over wht you should weigh for your body size & height
ii. Obesity is the condition in which there is an excess of body fat, 20% over what you should weigh for your own weight & height

II. Maintaining a Healthy Diet
a. The genes you inherit from your parents & your lifestyle choices determine your body size & shape
b. Body mass index is an of weight in relation to height that's used to assess healthy body weight.
c. Keeping body weight in the healthy range requires a plan that encourages healthy food choices & good exercise habits
d. Fad diets may cause initial weight loss but can be dangerous & do not promote behaviors for long term weight management

III. Eating Disorders
a. Individuals with eating disorders often have a distorted body image
b. Eating disorders are more common in teenage girls especially overachievers who have poor-self image & in athletes who must restrict their weight
c. Anorexia nervosa is an overwhelming fear of gaining weight & can result in self-starvation. Bulimia nervosa involves frequent bingeing & purging, which can cause many health problems
d. Eating disorders should be identified & treated early to avoid long-term health problems

IV. Preventing Food-Related Illness
a. Common digestive disorders include hearburn, ulcers, constipation, diarrhea, & flatulence
b. Diarrhea causes water loss & can result in dehydration which is very dangerous, especially to children & the elderly
c. A food allergy involves a reaction by the body's immune system to particular foods. A food intolerance may cause symptons similar to those of an allergic reaction, but it's not a specific immune reaction
d. Proper handling & storage of food can prevent a food-borne illness

Friday, October 24, 2008

Health

I. What is Nutrition? It's the science or study of food & the ways in which the body uses food. It is also the study of how and why we make food choices. Nutrition is also the study of the nutrients food contains. Nutrients are substances in food that provide the body with energy, help it grow & help it repair itself.

II. A Balanced Diet Keeps You Healthy
A. Diet is everything you eat & drink
B. To stay alive & healthy a person must eat & drink the right amounts of nutrients
C. Too little: weight loss, poor growth, even death
D. Too much: illness, excess fat, high blood pressure, heart disease

III. Six Classes of Nutrients
A. Carbohydrates (the body's preferred choice for energy)
i. Simple carb- simple sugars
ii. complex carb- starches, plant foods
iii. 45-65% of the calories in our diets should come from carbohydrates
iv. Fiber- a complex carb. Provides little energy & cannot be digested. Very important to your intestine's health, helps prevent colon cancer, heart disease, constipation
B. Fats- belong to a class of chemical compounds called lipids. They are not dissolved in water
i. saturated fats are made up of saturated fatty acids, come from animal meat & milk & a few vegetables
ii. unsaturated fats are made up of unsaturated fatty acids
iii. For teens, 25-35% of calories should be fats
iv. Cholesterol- a fat like substance not a nutrient, cholesterol also from diet. Cholesterol is found only in animal tissue
C. Proteins- your muscles, hair & nails are made up of mostly protein
i. proteins in the body help build new cells & repair existing ones
ii. Proteins are also needed to form hormones, enzymes, antibodies, & other important molecules
iii. If you eat more protein than needed, it's stored as fat
D. Vitamins- are a class of nutrients that are chemical elements that are needed for certain body processes, such as enzyme activity & bone formation
F. Water- most important nutrient- 60% of the body is water

IV. Recommended Dietary Allowances (RDA) The recommended nutrient intakes that will meet the need of almost all healthy people

V. The Nutrition facts section of a food label provides info. on how much energy & nutrients a serving of food gives

VI. The Dietary Guidelines for Americans is a set of recommendations on diet & lifestyles designed to promote health, to support active lives & to reduce chronic disease risk in the general population

VII. Healthy snacks like fresh fruit, low fat yogurt or low salt pretzels, provide a good source of essential nutrients without excessive calories & fats

VIII. As children grow, their total nutrient & energy requirements increase with total needs being greatest in teen years

IX. Athletes need a well balanced diet that's higher in energy & fluids than the diet of a less active person

X. Simple dietary changes like switching to low fat dairy products & eating fresh fruits & vegetables in place of sweet/salty snacks can reduce the amount of fat, sugar & salt in your diet

Sunday, October 19, 2008

Biology

Solutions, Diffusion, Osmosis, Cell Membrane, Ion Channels, & Facilitated Diffusion

Solutions- when 2 substances are evenly distributed throughout each other

Solute- the part of the solution that's being dissolved (ex. salt)

Solvent- the part of the solution that dissolves something else (ex. H2O or water)

*Descriptions: polar mixes with polar, nonpolar mixes with nonpolar (like dissolves like)

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Diffusion- movement of molecules from high to low concentration, only nonpolar and small molecules can diffuse across the membrane easily

Passive Transport- movement of molecules across the membrane not requiring energy

Concentration Gradients- a difference in an amount of space

Equilibrium- equal concentration (even distribution, balanced)

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Osmosis- the diffusion of water-movement of H2O from high H2O to low H2O concentration

Hypertonic- a solution with more solute & less H2O than the inside of a cell, water moves out of cell and cell shrinks

Hypotonic- a solution with more H2O than the inside of a cell, water moves in the cell, and cell expands and sometimes explodes

Isotonic- a solution with equal amount of H2O and solute inside and outside a cell, water moves in and out of cell equally, cell stays normal and healthy

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Cell Membrane Function- allow some things in & keep others out; provides a filter or barrier; made up of...

Phospholipid Bilayer- 2 layers of lipid/nonpolar membrane with polar edges

Proteins- stuck in membrane like a tunnel, transport things

Receptors- on surface to recognize/identify outside molecules

*Description: selectively permeable (allows some things to pass through the membrane but keeps out others)

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Ion Channels- a transport protein with a polar pore through which ions can pass: only lets certain things through: if ions are positive, they'll diffuse inside, if negative diffuse outside

*Descriptions: from high to low concentration if passive, but if it uses energy it could move in opposite directions

-

Facilitated Diffusion- movement of molecules from high to low concentration with the help of a protein (does not require energy)

Carrier Protein- bind a specific substance on one side of the cell membrane, carry the substance across the cell membrane, and release it on the other side

Biology

Types of Transport

Passive

  • Does not require energy
  • High concentration to low concentration
  • Down concentration gradient

  • Diffusion
  • Osmosis
  • Facilitated Diffusion

Active

  • Requires energy (ATP)
  • Low concentration to high concentration
  • Across/up concentration gradient

  • Protein Carrier & Pumps
  • Bulk Transport

-Exocytosis

-Endocytosis

*Pinocytosis

*Phagocytosis

ACTIVE TRANSPORT

Protein Pumps/Carriers: when proteins use energy to move molecules across the cell membrane (across/up) uses ATP to make something happen

Bulk Transport: moving a large molecule or large amounts of molecule across cell membrane using vesicles

-Exocytosis: when molecules move out of the cell, vesicle will join with cell membrane to move it out

-Endocytosis: opposite of exocytosis when molecules come into the cell

  • Pinocytosis: when liquid is entering the cell (endocytosis) cell drinking
  • Phagocytosis: taking solids in, using endocytosis (cell eating)

Sunday, October 5, 2008

Journalism

The Technique of Narration

*Scene Re-creation
  • Capturing sights, sounds, and smells
  • Using your senses to recreate
  • "Weave facts into a story" for the readers to see & hear events as they unfold

*Dialogue

  • Using a conversation between 2 or more people
  • Readers listens to the characters that the reporter recorded; characters talk to each other
  • Difference between quotes & dialogue-source tells reporter who tells reader (quotes) & reporter records conversation (dialogue)

*Foreshadowing

  • Giving hints about what is coming
  • Every lead should foreshadow the story
  • With foreshadowing, you are promising a good story

*Anecdotes

  • Stories embedded in stories
  • Illistrates a point to inform & entertain the reader
  • Illistrates a point
  • Remembered more than anything else in the story

World Geography

Culture Continued...

*Religion
-A belief in a supernatural power or powers that are regarded as the creators of the universe
  • Monotheistic- belief in one gods
  • Polytheistic- belief in many gods
  • Animistic (traditional)- divine forces in nature

>>Religions spread through diffusion and through converts

^Some religions actively seek to convert followers (ex. Christianity, Islam, and Buddhism)

^Others do not (ex. Judaism)

*3 of the major religions began in SW Asia & 2 in South Asia

  • SW Asia- Judaism, Christianity, Islam

>>Share similar basic beliefs, some prophets, & teachers

^Judaism- the oldest of the monotheistic religions

-Concentrated in Israel but followers live all over the world

-An ethnic religion with faith & culture tied tightly together

-Basic laws & teachings come from the Torah, the Jewish holy book

^Christianity- evolved from the teachings of Judaism

-Based on the teachings of Jesus Christ

-Teachings are recorded in the Bible, the Christian holy book

-Christianity is spread all throughout the world

  • There are 3 major groups: Roman Catholic, Protestant, Eastern Orthodox

-Islam- based on the teachings of Muhammed

  • Muslims worship God, whom they call Allah
  • Has close ties with Judaism & Christianity with many of the same teachers and prophets
  • Holy Book is called the Quran
  • 2 major divisions

-Sunni

-Shiite

-Hinduism

  • Concentrated in India
  • Polytheistic, believe in one or many gods, all who are a part of the divine spirit, Brahman

-Buddhism- offshoot of Hinduism

  • Founded by Siddhartha Gautama (1st Buddha)
  • Promotes the correct way of living in order to reach nirvana
  • Spread over Asia

World Geography

Culture

*Culture is the total of knowledge, attitudes, and behaviors shared by and passed on by the members of a specific group

-How people should behave if they want to fit in with the group, involves the following:
  • Language
  • Education
  • Relationships to Family
  • Religion
  • Political & Social Organization

-Society is a group of people that shares a geographic region, a sense of identity and a culture

-Ethnic Group- refers to a specific group that shares a language, customs, and common heritage

  • A separate group of people within the region they live

*Culture Constantly Change

-Innovation- using existing technology and creating something new to meet a need

  • Can be purposeful or accidental

-Diffusion- the spread of ideas, inventions, or patterns of behavior

  • When people have contact with other people ideas are shared and become a new aspect of society

>>Cultural hearth- a site of innovations-where basic ideas are spread from

-Acculturation- when a society changes because it accepts an innovation

  • Sometimes societies don't accept innovations

>>Individuals need to decide whether or not it's useful

^Can be positive or negative depending on how the change came about-if forced, it can be negative

*Language

-Language reflects all aspects of culture

  • Helps establish cutural identity

>>Builds a sense of unity but can also cause division

-Language Families

  • Between 3000-6500 languages are spoken across the world today

>>They are all categorized by placing them with other similar languages in language families

^Dialect- versions of a language

-Reflects changes in speech patterns related to class, region or other cultural changes

-Language Diffusion

  • New languages can be created when several groups in a region speak different language (ex. Creole)
  • Migration causes language to spread when people settle in new locations (ex. colonists from Europe brought their languages from the Old World to the New World)

Wednesday, October 1, 2008

Biology

Prokaryote:
  • no nucleus, free DNA
  • small
  • unicellular
  • no mitochondria for cellular respiration
  • primitive
  • no membrane-bound organelles

Eukaryote:

  • has nucleus
  • small-large
  • uni & multi-cellular
  • mitochondria for cellular respiration
  • complex
  • has membrane-bound organelles

Both:

  • have plasma membrane
  • have cytoplasm

Biology

Cell Definitions:

  • Prokaryote- simple cell, no nucleus or cell organelles (ex. bacterial cells)
  • Eukaryote- complex cell, contains nucleus and other organelles
  • Organelle- the organs in the cell
  • Selective Permeability- part of the plasma membrane, lets some substances pass through, while keeping others out
  • Chloroplast- captures light energy & converts it to chemical energy through photosynthesis
  • Mitochondria- converts fuel energy into usable energy
  • Osmosis- the diffusion of water through a selectively permeable membrane
  • Diffusion- the movement of a substance from an area of high concentration to an area with lower concentration by random motion of that substance's particles
  • Active Transport- the transport of a substance across a cell membrane against its concentration gradient
  • Passive Transport- movement across the cell membrane that does not require energy from the cell
  • Hypertonic- describes a solution whose solute concentration is higher than the solute concentration inside a cell
  • Hypotonic- describes a solution whose solute concentration is lowerthe the solute concentration inside a cell
  • Isotonic- describes a solution whose solute concentration is equal to the solute concentration inside a cell
  • Exocytosis- the process by which a substance is released from the cell
  • Endocytosis- the process by which a cell membrane encloses around a particle in a vesicle to bring the particle into the cell

Biology

Cells & Their Functions:

Nucleus- selectively permeable to control movement in or out of the cell

Nucleolus- instrutions in DNA are copied here, works with ribosomes in the synthesis of protein

Cytoplasm- contains dissolved nutrients, helps dissolve waste products, responsible for movement, gives cell its shape

Mitochondria- the cell's main energy source (ATP)

Chloroplast- carries out the process of photosynthesis, contains chlorophyll which makes it green

Ribosome- assemble amino acids into proteins

Rough ER- helps transport proteins

Smooth ER- makes lipids, breaks down toxic substances

Golgi- serves as the packaging & distribution center of the cell

Vacuole- stores water and may contain many substances, when full the cell becomes rigid which causes the plant to stand upright

Cell Membrane- closes cell, separates the cell interior from outside surroundings

Cell Wall- surrounds cell membrane and provides structure & support

Lysosome- contains the cell's digestive enzymes which get rid of macromolecules & old cell organelles