12/6/08 Learning Target: 1. I can identify the functions and building blocks of the following organic compounds: carbohydrates, proteins, fats and DNA.

12/6/08Learning Target: 1. I can identify the functions and building blocks of the following organic

compounds: carbohydrates, proteins, fats and DNA.

Do Now: Review: I can explain the function of the excretory system and the organs.

1. What is the function of the kidneys in the human body? Bladder?

2. What is the function of the

excretory system?

HW: Review Notes

Agenda:

• Do Now/Announcements

• Case Study: “I want my pasta!”

• Mini-Lesson: Organic Compounds

This Week’s AgendaWeek #14: 12/6-12/10

MondayLab #10: Diffusion of Carbs through a Membrane

Tuesday

WednesdayCase Study #1: Day 2

ThursdayCase Study #1: Day 3Diagnosis

FridayReviewQUIZ

TUTORING TOMORROW

The Excretory System

Maintains water balance

Eliminates waste from the body

The urine maker and the body’s filter

Urine storage

Urine’s way out!

How does this system work to maintain water

balance?

Treated with salt water Treated with distilled water

Water Concentration Homeostasis in Humans

Normal water level in the blood and body cells.

You eat a salty meal.

Salt enters the blood. Body cells shrink as water diffuses out of the cells and enters the salty blood. Water level in

the cells is too low.

Brain detects higher salt

levels in the blood and

sends signal to the kidney.

The kidney allows LESS water to enter the urine. The body retains (hangs

on to) more water.Also, our brain creates a

feeling of thirst, causing us to drink!

Water level in the blood increases.

Water flows back into the body cells.

What happens when we eat salty foods?

CASE STUDY:

“I want my pasta!”

What do we know?

Symptoms:

• tiredness, lack of energy

• certain foods give Becky diarrhea and stomach pain

Treatment:

• mysterious pills

What do we need to find out?

• Why do certain foods make Becky sick?

• What is in the mysterious pills that treat Becky?

CLUE #1: Nutrition Information

Focus on the carbohydrate, protein, and fat content of each food.

+ Steak

Organic Compounds

Organic compounds are substances produced by and found in living things.

4 types:

1) Carboydrates

2) Proteins

3) Fat

4) DNA

Types of Organic CompoundsPolymer Building Block

(or subunit)Role in

Organisms

ProteinProtein Amino acid

CarbohydratesStarch

Glucose (simple sugar)

Fats

Set of instructions for making proteins

DNA

• hormones• antibodies• cell structure

• energy!

• cell structure

• insulation

Types of Carbohydrates

1) Starch

2) Glucose (sugar)

3) Fiber

12/2/08

Learning target: I can explain what substances can (and cannot) diffuse through the semi-permeable cell membrane?

I can explain the function of an indicator and describe a positive test result for a starch and glucose indicator.

Do Now: Review I can identify the functions of the four types of organic compounds and identify the building blocs of each.

What are 4 types of organic compounds? What are the building block of each organic compound.

Which one of these three compounds seems to be causing Becky’s symptoms?

HW: 1) Complete lab (if not already done)

2) QUIZ Friday - Water homeostasis, diffusion, and active transport

Agenda:


• Lab #10: Diffusion of Carbohydrates through a Membrane

CASE STUDY:


What do we know?

Symptoms:



Treatment:






1) Starch

2) Glucose (sugar)

3) Fiber

Lab #10: Diffusion of Carbohydrates through a Membrane

Problem: What substances can (and cannot) diffuse through the semi-permeable cell membrane?

Setup:

Beaker with water

model cell

(with semi-permeable membrane)

starch

glucose

starch indicator

(iodine)

Lab #10: Diffusion of Carbohydrates through a Membrane

Problem: What substances can (and cannot) diffuse through the semi-permeable cell membrane?

Setup:

Beaker with water

model cell

(with semi-permeable membrane)

starch

glucose

starch indicator

(iodine)

How will we be able to tell which

substances diffuse through the membrane?

Question #4

Indicators

An indicator is a chemical used to test for the presence of a specific compound, usually by changing color.

A postive (+) test for a substance will cause the indicator to change color.

A negative (-) test for a substance will not cause a color change.

Starch Indicator:

Lugol’s Solution (iodine)

Positive test:

Turns dark purple

Glucose Indicator:

Benedict’s Solution

Positive test:

Turns orange

Question #4

Data Table

RESULTS

Diffusion through a Membrane Lab

Starch Test

Can starch diffuse through the cell membrane?

Glucose Test

Can glucose diffuse through the cell membrane?

12/3/08

Learning target: I can compare and contrast the movement of starch, glucose, and iodine (starch indicator solution) across a semi-permeable membrane.

Do Now: Complete the following table: INDICATORS

HW: 1) Complete Case Study and Lab #10 (if not already done)

2) QUIZ FRIDAY - Water homeostasis, diffusion, and active transport

Agenda:


• Discussion: Lab #10

Molecule Indicator Positive test/color change

Starch

Glucose

CASE STUDY:


Clue #2

Starch Test

Can starch diffuse through the cell membrane?

Glucose Test

Can glucose diffuse through the cell membrane?


1) Starch

2) Glucose (sugar)

The Semi-Permeable Cell Membrane

Cell membrane surrounds the cell.

The cell membrane is SEMI-PERMEABLE (or selectively permeable),

meaning

It allows some substances to pass

through, but keeps other substances OUT.

S S

S

S

Results

GG

GGI

I I

II

III

II

In which direction will WATER flow?

HIGH concentration of water

LOW concentration of water

12/4/08

Learning target: I can explain how enzymes break down organic compounds and analyze how enzymes are necessary for digestion and diffusion of building blocks into the bloodstream.

Do Now: What can’t starch diffuse through the cell membrane? How can we CHANGE the starch so that it CAN pass through?

HW: 1) Week #14 - DUE TOMORROW - HOMEWORK p. 13

2) QUIZ TOMORROW - Week #13 & #14

Agenda:


• Mini-Lesson: Why digest?

• “I want my pasta!” - Clue #3

CASE STUDY:


What do we know?

Symptoms:



Treatment:






+ Steak


1) Starch

2) Glucose (sugar)

Starch Test

Glucose Test

CLUE #2: Diffusion Experiments

DIGESTION is when organic compounds are broken down into their building blocks.

What substance in our bodies is responsible for digesting food?

ENZYMES

Starch Glucose (simple sugars)

enzyme

How might we change starch so that it CAN pass through the cell membrane?

Clue #3

Where does most digestion take place?

Digestion

Absorption

Circulation

Wall of the small intestine

Blood vessel

Starch

Glucose

Inside the small intestineEnzyme

Diffusion

Synthesis

Glucose (simple sugars)

enzyme

StarchOpposite of…

DIGESTION!

Diagnosis: What is wrong with Becky?

Becky doesn’t make the enzyme that digests (breaks down) starch!

Starch cannot be absorbed by the wall of the small intestine!

Why does Becky lack energy?

What is in the pills that Becky takes before eating?

Becky can’t do this!


enzyme

Poor Becky…

X X

Enzymes

Enzymes are proteins in our bodies that:

(1) Digest, or break down, organic compounds.

(2) Speed up all chemical reactions in the body.

Another word for an enzyme is a catalyst.

SynthesisDigestion

(starch)

(glucose, or simple sugars)

Enzymes must have a specific shape in order to work properly.

Enzymes work like a lock and key.

Enzymes: The Lock and Key Model

Enzyme activity is highly specific.

Each enzyme in our bodies can bind to only ONE type of substance.

We have a different enzyme for every different reaction that occurs in our bodies.

12/5/08

AIM: QUIZ - Water Level Homeostasis and Diffusion

Do Now: Why can one type of carbohydrate pass through the cell membrane, while another cannot?

HW: None

Agenda:

• Do Now

• Case Study Review

• QUIZ!

CASE STUDY:



+ Steak

Organic Compounds

Organic compounds are substances produced by and found in living things.

4 types:

1) Carboydrates

2) Proteins

3) Fat

4) DNA


1) Starch

2) Glucose (sugar)

Starch Test

Glucose Test

CLUE #2: Diffusion Experiments

S S

S

S

Results

GG

GGI

I I

II

III

II

In which direction will WATER flow?

HIGH concentration of water

LOW concentration of water

Clue #3

DIGESTION is when organic compounds are broken down into their building blocks.

What substance in our bodies is responsible for digesting food?

ENZYMES


enzyme

How might we change starch so that it CAN pass through the cell membrane?

Digestion

Absorption

Circulation

Wall of the small intestine

Blood vessel

Starch

Glucose

Inside the small intestineEnzyme

Diffusion

Synthesis

Glucose (simple sugars)

enzyme

StarchOpposite of…

DIGESTION!

Diagnosis: What is wrong with Becky?

Becky doesn’t make the enzyme that digests (breaks down) starch!

Starch cannot be absorbed by the wall of the small intestine!

Why does Becky lack energy?

What is in the pills that Becky takes before eating?

Becky can’t do this!


enzyme

Poor Becky…

X X

Enzymes

Enzymes are proteins in our bodies that:

(1) Digest, or break down, organic compounds.

(2) Speed up all chemical reactions in the body.

Another word for an enzyme is a catalyst.

SynthesisDigestion

(starch)

(glucose, or simple sugars)

12/6/08 Learning Target: 1. I can identify the functions and building blocks of the following organic compounds: carbohydrates, proteins, fats and DNA.

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