Stage 1_Bio_2013

CENTRO DE INVESTIGACIÓN Y DESARROLLO DECENTRO DE INVESTIGACIÓN Y DESARROLLO DE EDUCACIÓN BILINGÜEEDUCACIÓN BILINGÜE

P H A S E1CHECKLIST

Student Name: _______________________ Group: _______

Your portfolio must include, the student agreement (signed) and the portfolio checklist

Act Description

Activity

PointsEarned Points

1Sign Agreement

2Diagnostic Activity

3Knowledge Acquisition

4Organization Activity

5Application Activity

6Metacognition

7Integrative Activity 1

8

Lab #1 Identificacion de compuestos organicos.

Total 100

STUDENT’S REFLECTIONS ABOUT HIS/HER WORK:

Presentation/Content/Activities________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Feedback to Teacher:_______________________________________________________________Students’ Signature____________________________________ Date:____________

CIDEB Biology Academy First Semester Aug-Dec 2011 Portfolio 2 page 1

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P H A S E 1 A G R E E M E N T

I ______________________________________________________ understand that my

portfolio is a collection of my school work and related achievements. The

contents exhibit my effort and progress as these elements relate to the

goals represented in my instructional program.

I agree to accept the responsibility for creating and managing my portfolio

as I complete each requirement. I will submit its content for periodic review

to my instructor. In doing so, I understand that the contents of my portfolio,

as well as the way in which I have presented the contents, will be evaluated

for the purpose of judging my performance in school.

Student Signature: _______________________________ Date: ____________________

Parent Signature:

I have read and understand the above portfolio agreement and have

reviewed my child’s portfolio requirements.

________________________________ Date: ______________________

Stage 1: Biology as a Science



Diagnostic Activity1- What is the importance of water for life?

In my opinion: ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________What everybody else say: _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2- What functions to carbohydrates have in an organism?In my opinion: ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________What everybody else say: _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

3- Can you think on a function that proteins have?

In my opinion: ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________What everybody else say: ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



Knowledge Acquisition Activity1- Read your textbook the topic the Nature of Matter and complete the scheme with the

vocabulary words.2- Change your scheme with a classmate and evaluate what he/she did.3- Make any corrections to your scheme of your classmate.


Atoms


Organization Activity1- In pairs build a conceptual map on the properties of water and the influence it has to

humans. 2- Remember you should start from the general facts to the specific facts. You may also

use pictures or clippings.3- Turn it in to your teacher. Make sure that both names are written down.

Application Activity1- Fill in the following chart with the composition, function and examples of the 4

macromolecules.

Macromolecules Composition Monomers Function ExamplesProteins

Carbohydrates

Nucleic Acids

Lipids



Metacognition

Answer correctly all of the Chapter 2 Assessment.

2.1 The Nature of matter1- The positively charged particle is an atom is called the

a- Neutronb- Ionc- Protond- Electron

2- Two or more different atoms are combined in definite proportions in anya- Symbolb- Isotopec- Elementd- Compound

3- A covalent bond is formed by thea- Transfer of electronb- Sharing electronsc- Gaining electronsd- Losing electrons.

4- Explain the relationship among atoms, elements, and compounds________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

5- What is a radioactive isotope? Describe two scientific uses of radioactive isotopes.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________1- Describe how the atoms in a compound are held together________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2- Distinguish among single, double, and triple covalent bonds.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

3- Use Models. Make a diagram like the one in Figure 2-4 to show how chlorine and hydrogen form from the compound hydrogen chloride, HCl.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________



____________________________________________________________________________

4- Calculate. A nanometer (nm) is one billionth of a meter (1nm=10-9m). If 100 million atoms make a row 1 cm in length, what is the diameter of one atom in nanometers?

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

5- When you shake sugar and sang together in a test tube, you cause them to form aa- Compound.b- Mixture.c- Solution.d- Suspension.

6- A compound that produces hydrogen ions in solution is a(n)a- Salt.b- Acidc- Base.d- Polymer.

7- Compared to most other substances, a great deal of heat is needed to raise the temperature of water by a given amount. This is because watera- Is an acid.b- Readily forms solutions.c- Has a high heat capacity.d- Acts as a buffer

8- Explain the properties of cohesion and adhesion. Give an example of each property.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

9- What is the relationship among solutions, solvents and solutes?________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

10- How are acids and bases different? How do their pH value differ?________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

11- Propose a Solution. Silica is hard, glassy material that does not dissolve in water. Suppose sodium chloride is accidentally mixed with silica. Describe a way to remove the sodium chloride.



________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

12- Predict. As part of the digestive process, the human stomach produces hydrochloric acid, HCl. Sometimes excess acid causes discomfort. In such a case, a person might take an actacid such as magnesium hydroxide, Mg(OH)2. Explain how their substance can reduce the amount of acid in the stomach.

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

13- What does the following formula represent?

a- Sugarb- A starchc- An amino acidd- A fatty acid

14- Proteins are polymers formed from a- A lipidb- Carbohydratec- Amino acidd- Nucleic acid

15- Explain the relationship between monomers and polymers, using polysaccharides as an example

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

16- Identify three major roles of proteins.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

17- Describe the parts of a nucleotide.



________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

18- Design an Experiment. Duggest one or two simple experiments to determine whether a solid white substance is a lipid or a carbohydrate. What evidence would you need to support each hypothesis?

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

19- Infer. Explain what the name “carbohydrate” might indicate about the chemical composition of sugars.

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

20- An enzyme speeds up a reaction bya- Lowering the activation energy.b- Raising the activation energy.c- Releasing energyd- Absorbing energy

21- In a chemical reaction, a reactant binds to an enzyme at a region known as thea- Catalystb- Productc- Substrated- Active site.

22- Describe the two types of energy changes that can occur in a chemical reaction.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

23- What relationship exists between an enzyme and a catalyst?____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

24- Describe some factors that may influence enzyme activity.



____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

25- Infer. Why is it important that energy- releasing reactions take place in living organisms?____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

26- Predict. Changing the temperature or pH can change an enzyme’s shape. Describe how changing the temperature or pH might affect the function of an enzyme.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

27- Use Analogies. Explain why a lock and key are used to describe the way an enzyme works. Describe any ways in which the analogy is not perfect.

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

The following graph shows the total amount of product from a chemical reaction performed at three different temperatures. The enzyme was involved in each case.

28- Interpret Graphs. At which temperature was the greatest amount of product formed?____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

29- Draw Conclusions. Describe the results of each reaction. How can you explain these



results?____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

30- Predict. A student performs the same chemical reaction at 30°C. Approximately how much product can she expect to obtain?

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

31- Explanation. Write a paragraph that includes the following: (a) a description of the four major classes of organic compounds found in living things, and (b) a description of how these organic compounds are used by the human body.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

32- Assess the Bid idea. What properties of carbon allow it to play such a major role in the chemistry of living things?

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

A student measured the pH of water from a small pond at several intervals throughout the day.

33- Interpret Graphs. At what time is the pond most acidic?a- Between noon and 6:00 P.M.b- At noonc- Between midnight and 6:00 P.M.d- At 6:00 P.M.

34- Form a Hypothesis. Which of the following is the most reasonable hypothesis based on



the results obtained?a- Pond water maintains constant pH throughout the day.b- pH rises with increasing daylight and falls with decreasing daylight.c- Living things cannot survive in this pond because enzymes will be destroyed.d- pH is higher at night than during the day.

35- How can you apply the information of this chapter?________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Integrative ProjectMake teams of 5 you will prepare a roll play. Half of the team will be a scientist and the rest of the team will be a reporter. The scientist will explain the discovery of organic compounds and enzymes. The teacher will assign the specific topic you will use. During your presentation you should answer the following:

- How did you discover this compound?- Why is this compound important?- What are the uses of this compound?- Where can we find this compound?- Is there a sickness that causes the excess or lack of this product?

YOU SHOULD use a power point presentation to explain your topic. If it applies bring props to exhibit your topic. YOU SHOULD take at least 10 minutes in your presentation.

The topics are:- Phenylalanine- DNA- Celulose- Lactose- Pepsin Enzyme- Cholesterol

Checklist: All team members should participate. A power point presentation should be use. The presentation should be at least 10 minutes long but no longer than 12 minutes. All questions should be answered during the presentation. Be creative.

Lab Session #1 Organic Compounds Identification



Instructions: Read through the laboratory practice and listen to your teacher’s instructions. Answer the question and tables from what you learn and investigated on organic compounds.

Práctica de Laboratorio 2

Identificación de compuestos orgánicos

Introducción

Los compuestos orgánicos son sumamente importantes para los seres vivos ya que representan para éstos parte fundamental de su estructura química, energía almacenada y transmisión de sus características. Como pudiste ver en el contenido del capítulo, los carbohidratos son la principal fuente de energía además de que las plantas también los usan para propósitos estructurales. Los lípidos sirven para almacenar energía y algunos forman parte de la estructura de membranas biológicas. Entre las funciones de las proteínas se encuentran: regular procesos celulares, formar huesos y músculos. Los ácidos nucléicos almacenan y transmiten información hereditaria o genética.

Problema¿Cuáles son los principales tipos de compuestos orgánicos presentes en algunos alimentos comunes?

Discusión previa1. Escribe el nombre de cuatro grupos de compuestos orgánicos que se encuentran en

los seres vivos.____________________________________________________________________________________________________________________________________________________________________________________________________________

2. Escribe (para cada uno de ellos) alguna función que desempeñan en los seres vivos.____________________________________________________________________________________________________________________________________________________________________________________________________________

3. De que tipo de compuesto orgánico están formados tu cabello y uñas?____________________________________________________________________________________________________________________________________________________________________________________________________________

4. Hoy en día, se hace mucho énfasis en consumir alimentos ricos en fibra como los cereales, frutas y pan integral para aumentar el tránsito intestinal. ¿A que tipo de compuesto orgánico pertenece la fibra que contienen estos alimentos?________________________________________________________________________________________________________________________________________



____________________________________________________________________

Materiales

Microscopio compuesto 3 tubos de ensayo Alcohol etílicoCubreobjetos Gradilla LugolPortaobjetos 1 pipeta graduada PinzasNavaja de un filo 1 mechero CerillosCacahuate 1 tripié AguaClara de huevo 1 tela de asbestos Sudan IIIpapa 1 vaso precip. 500 ml HCl concentrado

ProcedimientoParte A. Observación de carbohidratos1. Con la navaja realiza un corte fino de papa y colócalo sobre el portaobjetos.2. Agrega una gota de agua sobre el corte y luego una gota de lugol.3. Coloca encima el cubreobjetos tomándolo por los bordes.4. Coloca la preparación sobre la platina del microscopio y realiza la observación,

primero con el objetivo de 10X y después con el de 40X.5. Dibuja lo que observaste en los círculos respectivos.

10 X 40X



Parte B. Observación de lípidos

1. Con la navaja realiza un corte fino al cacahuate y colócalo en el portaobjetos.2. Agrega sobre el corte una gota de Sudan III.3. Coloca encima un cubreobjetos.4. Lleva la preparación a la platina del microscopio y realiza la observación, primero con el objetivo

de 10X y después con el de 40X.5. Dibuja lo observado en los círculos:

10X 40X

Parte C. Observación de la coagulación de las proteínas.

1. Coloca en tres tubos de ensayo una pequeña cantidad de clara de huevo.

2. Calienta a baño María uno de los tubos.

3. Observa lo que ocurrió y toma nota por escrito de ello.

4. Al segundo tubo de ensayo que contiene clara de huevo, agrégale 2 o 3 gotas de HCl concentrado.


6. Al tercer tubo de ensayo con clara de huevo agrégale 2 o 3 ml de alcohol etílico.


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TUBO CONTENIDO OBSERVACIÓN

1

2

3

Análisis y conclusiones.

1. Como observaste carbohidratos en la práctica de hoy?________________________________________________________________

2. De qué color se tiñó la grasa en la muestra de cacahuate?________________________________________________________________

3. Cómo afecta la temperatura a las proteínas?________________________________________________________________

4. Que pasa a la proteína en presencia de un ácido concentrado?________________________________________________________________

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Stage 1_Bio_2013