block day- 12/7

Block Day- 12/7

• Homework: Study for Checkup on Friday• Checkup will include: Inputs and outputs of photosynthesisWhy is soil NOT food?What is essential for plants?• Food for Plants Test Next Week=Block Day

• MAKE A NEW ENTRY-PHOTOSYNTHESIS DETAILS-12/7

WE KNOW PLANTS NEED LIGHT, CO2, AND WATER TO PERFORM PHOTOSYNTHESIS.

• WHY CAN’T WE STAND IN THE SUN/LIGHT AND DRINK WATER AND INHALE CO2 AND MAKE SUGAR LIKE PLANTS DO?

• VIDEO CLIP 1– PHOTOSYNTHESIS• VIDEO CLIP 2– CHLOROPLASTS AND

PHOTOSYNTHESIS

Place where photosynthesis takes place

• WHY DO PLANTS PERFORM PHOTOSYNTHESIS?

• WHAT IS THE ROLE OF THE SUN IN PHOTOSYNTHESIS?

• WHAT WOULD HAPPEN TO AMOUNT OF GLUCOSE/STARCH IN A PLANT IF WE BLOCKED THE AIR (CO2) FROM ENTERING A LEAF?

BOTH PLANTS STILL HAVE ACCESS TO LIGHT AND WATER—BUT THE PLANT ON THE RIGHT HAS VASELINE ON THE LEAVES TO BLOCK AIR

• DRAW THE SET UP OF THE PLANT—SHOWING HOW WE CAN REDUCE THE AMOUNT OF CO2 ENTERING THE LEAF

VASELINEVASELINE

Hypothesis Prediction

Glucose and starch in the leaves are built using a form of carbon taken in from the environment.

LIMITED CO2 LEAF:

CONTROL LEAF:

Glucose and starch in the leaves are NOT built using a form of carbon taken in from the environment.

LIMITED CO2 LEAF:

CONTROL LEAF:

LESS/NO STARCH

WILL HAVE STARCH

BOTH WILL HAVE/NOT HAVE STARCH

BOTH PLANTS STILL HAVE ACCESS TO LIGHT AND WATER—BUT THE PLANT ON THE RIGHT HAS VASELINE ON THE LEAVES TO BLOCK AIR

Control leaf (open to atmosphere)

Limited CO2 leaf (covered with Vaseline)

LEAF INITIAL COLOR COLOR AFTER INDICATOR

LIMTED-CO2

CONTROL (normal

atmosphere)

Results: Starch indicator with CO2 – limited and control radish plants

YELLOW/PALE GREEN

DARK GREEN

LIGHT/IODINE COLOR

BLACK

Based on our experiments and what we have learned, show the inputs and outputs of PHOTOSYNTHESIS

LIGHT

CO2

H20

GLUCOSE

CHEMICAL

02

• Open to ENTRY-BUILDING BLOCKS FOR PLANTS• GET A PACKET (1 PER TABLE)

• POTATOES CONTAIN STARCH AND GROW UNDERGROUND.

• ONLY THE ABOVE GROUND PARTS HAVE GREEN LEAVES.

• SOIL AND WATER AREN’T FOOD.• SO, WHERE DO YOU THINK THE

STARCH IN THE POTATO COMES FROM?

LEAF

POTATO (tuber)

STEM (vascular tissue)

ROOT

Time 0

LEAF

POTATO (tuber)

STEM (vascular tissue)

ROOT

Time 1

Time Interval Observations

Time 0 - Time 1  

Time 1 - Time 2  

Time 2 - Time 3  

Time 3 - Time 4  

Time 4 - Time 5

Time Interval Observations

Time 0 - Time 1 GLUCOSE IS PRODUCED IN THE LEAVES

Time 1 - Time 2  

Time 2 - Time 3  

Time 3 - Time 4  

Time 4 - Time 5

LEAF

POTATO (tuber)

STEM (vascular tissue)

ROOT

Time 2

Time Interval Observations

Time 0 - Time 1 GLUCOSE IS PRODUCED IN THE LEAVES

Time 1 - Time 2  

Time 2 - Time 3  

Time 3 - Time 4  

Time 4 - Time 5

SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM

LEAF

POTATO (tuber)

STEM (vascular tissue)

ROOT

Time 3

Time Interval Observations

Time 0 - Time 1 GLUCOSE IS PRODUCED IN THE LEAVES

Time 1 - Time 2  

Time 2 - Time 3  

Time 3 - Time 4  

Time 4 - Time 5

SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM

MORE GLUCOSE ,SUCROSE, AND STARCH. MORE SUCROSE MOVES FROM THE LEAVES TO THE STEM-AND SOME GOES TO THE ROOT AND POTATO

LEAF

POTATO (tuber)

STEM (vascular tissue)

ROOT

Time 4

Time Interval Observations

Time 0 - Time 1 GLUCOSE IS PRODUCED IN THE LEAVES

Time 1 - Time 2  

Time 2 - Time 3  

Time 3 - Time 4  

Time 4 - Time 5

SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM

MORE GLUCOSE ,SUCROSE, AND STARCH. MORE SUCROSE MOVES FROM THE LEAVES TO THE STEM-AND SOME GOES TO THE ROOT AND POTATO

STARCH IS BEING ASSEMBLED IN THE POTATO

LEAF

POTATO (tuber)

STEM (vascular tissue)

ROOT

Time 5

Time Interval Observations

Time 0 - Time 1 GLUCOSE IS PRODUCED IN THE LEAVES

Time 1 - Time 2  

Time 2 - Time 3  

Time 3 - Time 4  

Time 4 - Time 5

SOME OF THE GLUCOSE ASSEMBLES INTO SUCROSE AND STARCH. SOME SUCROSE MOVES FROM THE LEAVES TO THE STEM

MORE GLUCOSE ,SUCROSE, AND STARCH. MORE SUCROSE MOVES FROM THE LEAVES TO THE STEM-AND SOME GOES TO THE ROOT AND POTATO

STARCH IS BEING ASSEMBLED IN THE POTATO

MORE STARCH IS BEING ASSEMBLED IN THE POTATO AND 1 GLUCOSE IS GONE IN THE ROOT

• POTATOES CONTAIN STARCH AND GROW UNDERGROUND.

• ONLY THE ABOVE GROUND PARTS HAVE GREEN LEAVES.

• SOIL AND WATER AREN’T FOOD.• SO, WHERE DO YOU THINK THE

STARCH IN THE POTATO COMES FROM?

• SUMMARY QUESTIONS1. WHERE DID THE GLUCOSE COME FROM IN TIME 1?

2. WHAT FUNCTION DOES IT APPEAR THE STEM PLAYS?

GLUCOSE WAS MADE FROM CO2 IN THE AIR AND WATER FROM THE ROOTS

THE STEM IS FOR TRANSPORT

3. WHAT FORM OF CARB TRAVELS THROUGH THE STEM?

4. WHERE DOES MOST OF THE ASSEMBLY INTO STARCH TAKE PLACE?

SUCROSE TRAVELS THROUGH THE STEM

MOST OF THE STARCH IS ASSEMBLED IN THE POTATO. A LITTLE BIT IS ASSEMBLED IN THE LEAVES

5. WHY DO YOU THINK THE PLANT LINKS MANY GLUCOSE MOLECULES TOGETHER IN THE TUBER?

STARCH STORAGE. CAN BE BROKEN APART TO USE AS FOOD FOR THE NEXT YEAR’S PLANT

6. WHERE DOES THE GLUCOSE AND STARCH THAT ARE FOUND IN THE ROOT AND POTATO COME FROM? (WHERE DID IT START)

7. WHAT HAPPENS TO THE MISSING GLUCOSE IN TIME 5? WHY?

THE GLUCOSE CAME FROM THE LEAVES WHERE IT WAS MADE BY PHOTOSYNTHESIS

THE GLUCOSE WAS USED FOR ENERGY. ROOTS GROW THROUGH THE SOIL—THIS TAKES ENERGY

8) WHAT PROCESS USES GLUCOSE OR OTHER FOOD MOLECULES TO PROVIDE ENERGY FOR MOVEMENT?

9) IF PLANTS PERFORM CELLULAR RESPIRATION LIKE ANIMALS DO, WHAT MOLECULE(S) SHOULD WE BE ABLE TO MEASURE AS EVIDENCE?

CELLULAR RESPIRATION BREAKS THE BONDS OF GLUCOSE TO RELEASE CHEMICAL ENERGY

OXYGEN AND CO2. OXYGEN IS AN INPUT AND CO2 IS AN OUTPUT.

• WHY WOULD A PLANT NEED TO USE GLUCOSE?

• WHAT PROCESS BREAKS APART FOOD MOLECULES TO RELEASE ENERGY?

• IF PLANTS PERFORM CELLULAR RESPIRATION LIKE ANIMALS DO, WHAT MOLECULES SHOULD WE BE ABLE TO MEASURE AS EVIDENCE?

CELLULAR RESPIRATION BREAKS THE BONDS OF GLUCOSE TO RELEASE CHEMICAL ENERGY

FOR THE SAME REASON WE DO—ENERGY FOR MOVEMENT/GROWTH

OXYGEN AND CO2. OXYGEN IS AN INPUT AND CO2 IS AN OUTPUT.

• Make a new entry-DO PLANTS PERFORM CELLULAR RESPIRATION?• GET A PREDICTION CHART FROM THE

FRONT COUNTER

BtB is an indicator for CO2

BLUE BtB= LOW CO2

YELLOW BtB= HIGH CO2

• WE KNOW THAT IN THE LIGHT PLANTS WILL DECREASE THE AMOUNT OF CO2—THEY USE THE C AND O ATOMS TO MAKE GLUCOSE

• BUT, WE ALSO KNOW THAT PLANTS NEED TO USE THE FOOD THEY MAKE FOR ENERGY AND CELLULAR RESPIRATION IS THE PROCESS TO GET THE ENERGY FROM THE FOOD

HOW CAN WE KEEP THE PLANTS FROM DOING PHOTOSYNTHESIS AND STILL SEE IF THE PRODUCE CO2 (PERFORM Cellular Respiration)?

• Part 1: Initial Explanation and Predictions

• We will look for color change in the BTB indicator. BTB is normally blue. If BTB changes to yellow that means more CO2 is in the container. If it changes from yellow to blue, there is less CO2

What do you predict will happen to the amount of CO2 in each chamber? Explain your prediction for the plant with HIGH CO2. Explain your prediction for the plant with LOW CO2

High CO2 Low CO2

The amount of CO2 will…

increase be the same decrease

increase be the same decrease

What will happen to the color?

stay yellow turn blue

stay blue turn yellow

CONDITIONS: DAY 1

HIGH CO2 LOW CO2

NO LIGHT

• RESULTS:

High CO2

Low CO2

The amount of CO2 …

increased was the same

decreased

increased was the same

decrease

What happened to the color?

stayed yellow

turned blue stayed blue

turned yellow

• SKIP SOME SPACE FOR THE RESULTS (CHART AND CONCLUSION)

• MAKE A NEW ENTRY-WHAT IS CELLULAR RESPIRATION? • GET A SHEET IN PLASTIC AND A

SET OF QUESTIONS PER PERSON