block day- 12/7 homework: study for checkup on friday
DESCRIPTION
MAKE A NEW ENTRY- PHOTOSYNTHESIS DETAILS-12/7TRANSCRIPT
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