Science Class: February 2013

Tuesday, February 26, 2013

El Nino and La Nina

Easter Island:
http://www.youtube.com/watch?v=-hO-vCPuuQQ&safe=active

BBC video from class:
http://www.youtube.com/watch?v=MzcKBeW44ao&safe=active

Project 1
Explain the El Nino and La Nina effects to your class.
Start by explaining the following:
weather vs. climate
prevailing winds
convection currents
horizontal airflow
dew point
precipitation
convection cells
Hadley cells
trade winds
Southern Oscillation

Discuss how global climate change may effect ENSOs
Include a section on the countries most affected by ENSOs
Back up your explanations with visual aids- these could be old school posters or digital material.
Your presentation should explain wind and ocean currents.

The best project sets the grade!

Due: 3-11-13

APES footprint activities

Due Monday 3-4-13
WATER
Go here, complete the activity and fill out the worksheet:
http://www.waterfootprint.org/?page=cal/WaterFootprintCalculator

Carbon footprint (household) calculator
http://www.epa.gov/climatechange/ghgemissions/ind-calculator.html

general footprint with avatar
http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/

Sunday, February 24, 2013

Biology window panes due tomorrow

Just 10 this time!
1. ATP- Adenosine triphosphate- this is your cell's basic unit of chemical energy made from breaking down a glucose molecule.

2. Lysis- to split something open- in biology it is usually water breaking things down.

3.synthesis- " to make" something, you are building something, usually a compound in your body.

4.Activation energy- least amount of energy required to start a chemical reaction ( happens at the arrow in an equation, it's 2 ATP for Cellular respiration).

5.aerobic- a reaction that is using oxygen.

6. anaerobic- a reaction that is not using oxygen.

7. fermentation- a type of bioenergetic reaction that occurs in plants and animals when oxygen is not available- a back-up energy process, there are two types you need to know; lactic acid fermentation (animals and certain bacteria) and alcohol fermentation ( plants and certain bacteria).

8.Respiration- the process of taking in essential materials for life and releasing waste products.

9.photosynthesis- the process of taking in solar energy and converting it to chemical energy.

10. metabolism- an organisms ability to use and transform matter to run life processes.

Wednesday, February 20, 2013

meiosis overview by Kahn

if you are confused please go here and work it out!

https://www.khanacademy.org/science/biology/cell-division/v/phases-of-meiosis

bozeman, cell cycle:
http://www.youtube.com/watch?v=2aVnN4RePyI&safe=active

Monday, February 18, 2013

Sub plan for 2-19-13

1st and 4th block biology: watch Bill Nye Greatest Discoveries (cell material) 45 min.
Complete the worksheet that goes with it. Pause when needed to fill in answers.
Collect at the end of class

http://www.youtube.com/watch?v=Y9MVuXRNXGM&safe=active

They should then complete the handout on mitosis and meiosis.

AP Environmental 3rd block: students should complete their vocabulary index cards

Term & image on front (images should be colorful and detailed)
3 bullets of information about the term on the back

When finished with index cards they should read the first chapter in "The Future of Life"

They can listen to music while doing index cards but NOT while reading!!

Friday, February 15, 2013

APES Homework for the weekend DUE MONDAY

HOME video:

http://www.youtube.com/watch?v=jqxENMKaeCU&wide=1&safe=active

Answer the questions as you watch this and turn it in on Monday 2-18-13

Thursday, February 14, 2013

mitosis and meiosis links

mitosis tutorial
http://www.cellsalive.com/mitosis.htm

sketches
http://www.johnkyrk.com/mitosis.html
onion:
http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/activity_description.html

whitefish:
http://www.dmacc.edu/instructors/mitosis.htm

onion pic:
http://www.marric.us/files/images/mitosis.gif

mitosis and meiosis side by side tutorial:
http://www.pbs.org/wgbh/nova/miracle/divide.html

Tuesday, February 12, 2013

Biology window panes due 2/18/13

Mitosis and Meiosis

1.Non-disjunction- When the chromosomes are not pulled apart evenly during anaphase of meiosis. This is what leads to Down’s syndrome (aka: trisomy 21 which means three of the 21st chromosome).

2. Chromosome- a condensed segment of DNA, humans have 46 chromosomes in every cell in their body,(except egg and sperm)

3. Chromatid- half of a duplicated chromosome- the whole X represents two sister chromatids!

4. Mitosis- the process of forming two new, genetically identical cells (skin, liver, hair, muscle, blood, etc. all of these cells are referred to as being 2N= the whole chromosome number, one set from Mom and one set from Dad)
http://www.youtube.com/watch?v=lf9rcqifx34&feature=related&safety_mode=true&persist_safety_mode=1&safe=active

5. Meiosis – the process of forming 4 new, GENETICALLY DIFFERENT cells with half the genetic material of the original cell. These cells only have 23 chromosomes (they are called 1N)
http://www.sumanasinc.com/webcontent/animations/content/meiosis.html

6. Zygote- forms when the egg and the sperm unite and make the first cell of a new organism.

7. Allele- a choice for a trait, you have two alleles for every trait in your body, one from mom and one from dad.

8. Replication- the process of copying the original strand of DNA to form a new, IDENTICAL, strand of DNA so that when the cell divides the daughter cells have the same exact genetic information as the parent cell.

9. Trait- a physical characteristic or feature of a person (ex; brown hair, tall, diabetic, blue eyes)

10. Genes- the segments of a person’s DNA (or chromosome)that codes for a certain trait.

11. Fertilization- when the sperm cell unites with the egg cell.

12. Centromere- the structure that holds two sister chromatids together.

13. haploid- The “Half” number of chromosomes an organism would have in a regular/ non- sex cell. Sex cells are haploid!!!! (same thing as 1N)

14. Diploid- The full chromosome number in a regular/somatic cell, the prefix “di” relates to the fact that you have “two” bits of information (chromosomes) for nearly every trait in your body. One from Mom and one from Dad. (same thing as 2N)

15. Somatic cells- all of the cells in your body except for your egg or sperm cells.
16. Gametes- the cells in your body that participate in reproduction, either egg or sperm cells.
17.Homologous chromosomes- The chromosomes that Match up for given traits, the chromosome from Mom that codes for height and the chromosome for Dad the codes for height are “homologous”. They pair up during meiosis 1 and trade information to insure that offspring are not identical!

18. Crossing over- when homologous chromosomes pair up and trade genes during meiosis 1.

19.sexual reproduction- when organisms use meiosis to allow for genetic variation of offspring- this allows for increases chances of survival in a species.

20. asexual reproduction- when organisms use mitosis to duplicate their cells, this results in a “clone” or two identical cells. Your cells do this when you are growing or repairing damaged tissue. Some organisms do this to make offspring= bacteria and fungal spores do this.