Wednesday 31 October 2018
Tuesday 30 October 2018
Tuesday 23 October 2018
3º C
https://ambientech.org/ambientech/activitats/salud/unidades-didacticas-4/una-alimentacion-equilibrada/indice.html
https://ambientech.org/ambientech/activitats/salud/unidades-didacticas-4/que-voy-a-comer-hoy/indice.html
https://choosemyplate-prod.azureedge.net/sites/default/files/tentips/DGTipsheet36EatSmartAndBeActiveAsYouGrow-sp.pdf
https://choosemyplate-prod.azureedge.net/sites/default/files/tentips/DGTipsheet34ChooseTheFoodsYouNeedToGrow-sp.pdf
https://kidshealth.org/es/teens/weight-height-esp.html?WT.ac=ctg#catget-healthy-esp
Monday 22 October 2018
Biomolecules in Food
Read through the lab and fill in the following information
Purpose:
Hypothesis:
Pre-lab questions:
1. How do you know if a food contains protein?
2. How do you know if a food contains starch?
3. What is the difference between starch and sugar?
4. Why should you be careful of biuret solution? What should you do if you spill some on yourself?
Procedure:
1. Split the responsibility for testing the food products amongst your group. Write the initial of each group member by the food item
they will test on the lab sheet
Part 1 Testing for Carbohydrates (Polysaccharides- Starch)
2. Use a dropper or the tweezers to place a small amount of the food item into your test tube
3. Add 1-2 drops of Iodine to the test tube
4. Observe the test tube, if the food contains starch it will turn a blue- black color. If the color remains brown, no starch is present.
5. Empty the test tube into the waste container and rinse with water.
Part 2 Testing for Carbohydrates (monosaccarides- sugar)
6. Use a dropper or the tweezers to place a small amount of the food item into your test tube
7. Add 5 drops of benedicts solution to the test tube
8. Carefully place the test tube into the hot water bat. Heat the tube for 2-3 minutes. (use a test tube holder to remove the tube from
the hot water.)
9. Observe the test tube, look at the following table to determine the quantity of sugar in the food.
Amount of sugar in food
None Trace amounts Little Sugar Some Sugar A lot of sugar Blue Blue/green Green/Yellow Orange Red
10. Empty the test tube into the waste container and rinse with water.
Part 3 Testing for Protein
11. Use a dropper or the tweezers to place a small amount of the food item into your test tube
12. Add 5 drops of biuret reagent to your tube (Biuret can burn your skin, wash off spills with lots of water.)
13. Observe the test tube, if the food contains protein it will turn a pinkish purple.
14. Empty the test tube into the waste container and rinse with water.
Part 4 Testing for Lipids
15. Use a dropper or tweezers to place a small out of food onto the newspaper, If the food is a solid, rub onto the newspaper.
16. Wait for 2 mins, remove any large pieces of food and observe.
17. Look at the paper against a light source. There are lipids present if a lot of light can pass through the paper. If little or no light can pass through then there is little or no lipids present.
18. Throw the piece of paper away.
Data
Post lab questions
1. Which foods come from plants? What biomolecule is most common in these foods?
2. Which foods come from animals? What biomolecule is most common in these foods?
3. Does water contain any of the macromolecules that you tested for? Explain why water is used as a control.
4. Fill out the following table by listing the foods that you tested.
High in Carbohydrates High in Protein High in Lipids
FOOD LIPIDS PROTEINS STARCH SUGAR
POTATO
Initial_____
BUTTER
Initial_____
EGG WHITE
initial _____
FISH
initial _____
APPLE
initial _____
SPINACH
initial _____
OIL
initial _____
WATER
initial _____
5. What is a macromolecule? Give examples of macromolecules from this lab.
6. Most macromolecules are made from chains of much simpler molecules (subunits). Name the subunits that
link up to form the following macromolecules and draw a picture of each one
Carbohydrate
Proteins
Purpose:
Hypothesis:
Pre-lab questions:
1. How do you know if a food contains protein?
2. How do you know if a food contains starch?
3. What is the difference between starch and sugar?
4. Why should you be careful of biuret solution? What should you do if you spill some on yourself?
Procedure:
1. Split the responsibility for testing the food products amongst your group. Write the initial of each group member by the food item
they will test on the lab sheet
Part 1 Testing for Carbohydrates (Polysaccharides- Starch)
2. Use a dropper or the tweezers to place a small amount of the food item into your test tube
3. Add 1-2 drops of Iodine to the test tube
4. Observe the test tube, if the food contains starch it will turn a blue- black color. If the color remains brown, no starch is present.
5. Empty the test tube into the waste container and rinse with water.
Part 2 Testing for Carbohydrates (monosaccarides- sugar)
6. Use a dropper or the tweezers to place a small amount of the food item into your test tube
7. Add 5 drops of benedicts solution to the test tube
8. Carefully place the test tube into the hot water bat. Heat the tube for 2-3 minutes. (use a test tube holder to remove the tube from
the hot water.)
9. Observe the test tube, look at the following table to determine the quantity of sugar in the food.
Amount of sugar in food
None Trace amounts Little Sugar Some Sugar A lot of sugar Blue Blue/green Green/Yellow Orange Red
10. Empty the test tube into the waste container and rinse with water.
Part 3 Testing for Protein
11. Use a dropper or the tweezers to place a small amount of the food item into your test tube
12. Add 5 drops of biuret reagent to your tube (Biuret can burn your skin, wash off spills with lots of water.)
13. Observe the test tube, if the food contains protein it will turn a pinkish purple.
14. Empty the test tube into the waste container and rinse with water.
Part 4 Testing for Lipids
15. Use a dropper or tweezers to place a small out of food onto the newspaper, If the food is a solid, rub onto the newspaper.
16. Wait for 2 mins, remove any large pieces of food and observe.
17. Look at the paper against a light source. There are lipids present if a lot of light can pass through the paper. If little or no light can pass through then there is little or no lipids present.
18. Throw the piece of paper away.
Data
Post lab questions
1. Which foods come from plants? What biomolecule is most common in these foods?
2. Which foods come from animals? What biomolecule is most common in these foods?
3. Does water contain any of the macromolecules that you tested for? Explain why water is used as a control.
4. Fill out the following table by listing the foods that you tested.
High in Carbohydrates High in Protein High in Lipids
FOOD LIPIDS PROTEINS STARCH SUGAR
POTATO
Initial_____
BUTTER
Initial_____
EGG WHITE
initial _____
FISH
initial _____
APPLE
initial _____
SPINACH
initial _____
OIL
initial _____
WATER
initial _____
5. What is a macromolecule? Give examples of macromolecules from this lab.
6. Most macromolecules are made from chains of much simpler molecules (subunits). Name the subunits that
link up to form the following macromolecules and draw a picture of each one
Carbohydrate
Proteins
What's wrong with what we eat?
https://www.ted.com/playlists/75/what_s_wrong_with_what_we_eat
Dean Ornish: The killer American diet that's sweeping the planet
https://www.ted.com/talks/dean_ornish_on_the_world_s_killer_diet#t-1135
Sharing powerful stories from his anti-obesity project in Huntington, West Virginia — and a shocking image of the sugar we eat — TED Prize winner Jamie Oliver makes the case for an all-out assault on our ignorance of food.
Mark Bittman: What's wrong with what we eat
In this fiery and funny talk, New York Times food writer Mark Bittman weighs in on what's wrong with the way we eat now (too much meat, too few plants; too much fast food, too little home cooking), and why it's putting the entire planet at risk.
Dean Ornish: The killer American diet that's sweeping the planet
https://www.ted.com/talks/dean_ornish_on_the_world_s_killer_diet#t-1135
Forget the latest disease in the news: Cardiovascular disease kills more people than everything else combined — and it’s mostly preventable. Dr. Dean Ornish explains how changing our eating habits can save lives.
Jamie Oliver: Teach every child about food
https://www.ted.com/talks/jamie_oliver?language=es#Sharing powerful stories from his anti-obesity project in Huntington, West Virginia — and a shocking image of the sugar we eat — TED Prize winner Jamie Oliver makes the case for an all-out assault on our ignorance of food.
Wednesday 10 October 2018
HOMEWORK
Hello, 1ºA AND 1ºB STUDENTS!!!!!!!
Task 1: It is the year 2050. You have won a ticket to a space station. You must decide which
station to visit: the one on Mercury, Mars, Júpiter or Saturn.
These are two different web tasks. Choose task 1 or task 2 (or both of them) and answer...
WEB TASKS
Unit 1: The Universe
Unit 1: The Universe
Task 1: It is the year 2050. You have won a ticket to a space station. You must decide which
station to visit: the one on Mercury, Mars, Júpiter or Saturn.
What are the best and the worst things about each planets?
Resources:
http://www.kidsastronomy.com/solar_system.htm
http://www.seasky.org/solarsystem/sky3.html
http://www.bbc.co.uk/science/space/solarsystem/
https://www.nasa.gov/kidsclub/index.html
http://www.sciencekids.co.nz/space.html
Resources:
http://www.kidsastronomy.com/solar_system.htm
http://www.seasky.org/solarsystem/sky3.html
http://www.bbc.co.uk/science/space/solarsystem/
https://www.nasa.gov/kidsclub/index.html
http://www.sciencekids.co.nz/space.html
Task 2: Some people say Earth has a twin sister.
Which planet is it?
How is it similar to Earth?
How is it different?
Resources:
http://www.happynews.com/living/space/venus-information-kids.htm
http://www.extrasolar-planets.com/english/venus.php
http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/venus.shtml
http://astronomyspace.suite101.com/article.cfm/venus_sizzles
http://www.nineplanets.org/venus.html
http://www.onr.navy.mil/focus/spacesciences/solarsystem/venus2.asp
How is it different?
Resources:
http://www.happynews.com/living/space/venus-information-kids.htm
http://www.extrasolar-planets.com/english/venus.php
http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/venus.shtml
http://astronomyspace.suite101.com/article.cfm/venus_sizzles
http://www.nineplanets.org/venus.html
http://www.onr.navy.mil/focus/spacesciences/solarsystem/venus2.asp
Friday 5 October 2018
Cell structure
http://www.edistribucion.es/anayaeducacion/8450021/recursos/U01/4BG_U01_01_EPI_02_SC/07_celula_vegetal_ingles/index_actividad.html
http://www.edistribucion.es/anayaeducacion/8450021/recursos/U01/4BG_U01_01_EPI_02_SC/10_celula_animal_ingles/index_actividad.html
http://www.edistribucion.es/anayaeducacion/8450021/recursos/U01/4BG_U01_01_EPI_02_SC/15_organulos_ingles/index_actividad.html
Wednesday 3 October 2018
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