Transcript Time 5 - bellevuebiology

Block Day- 12/7
• Homework: Study for Checkup on Friday
• Checkup will include:
Inputs and outputs of photosynthesis
Why is soil NOT food?
What is essential for plants?
• Food for Plants Test Next Week=Block Day
• MAKE A NEW ENTRYPHOTOSYNTHESIS 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
Hypothesis
Glucose and starch in the leaves
are built using a form of carbon
taken in from the environment.
Glucose and starch in the leaves
are NOT built using a form of
carbon taken in from the
environment.
Prediction
LIMITED CO2 LEAF: LESS/NO STARCH
CONTROL LEAF:
WILL HAVE STARCH
LIMITED CO2 LEAF: BOTH WILL
HAVE/NOT HAVE
CONTROL LEAF: 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)
Results: Starch indicator with CO2 – limited and control radish plants
LEAF
INITIAL COLOR
LIMTED-CO2
YELLOW/PALE
GREEN
CONTROL
(normal
atmosphere)
DARK GREEN
COLOR AFTER
INDICATOR
LIGHT/IODINE
COLOR
BLACK
Based on our experiments and what we have learned,
show the inputs and outputs of PHOTOSYNTHESIS
LIGHT
CO2
H 20
GLUCOSE
CHEMICAL
02
• Open to ENTRYBUILDING 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)
Time 0
STEM (vascular tissue)
ROOT
LEAF
POTATO
(tuber)
Time 1
STEM (vascular tissue)
ROOT
Time Interval
Time 0 - Time 1
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5
Observations
Time Interval
Observations
GLUCOSE
IS
PRODUCED
IN
Time 0 - Time 1
THE LEAVES
Time 1 - Time 2
Time 2 - Time 3
Time 3 - Time 4
Time 4 - Time 5
LEAF
POTATO
(tuber)
Time 2
STEM (vascular tissue)
ROOT
Time Interval
Observations
GLUCOSE
IS
PRODUCED
IN
Time 0 - Time 1
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)
Time 3
STEM (vascular tissue)
ROOT
Time Interval
Observations
GLUCOSE
IS
PRODUCED
IN
Time 0 - Time 1
THE LEAVES
Time 1 - Time 2
SOME OF THE GLUCOSE ASSEMBLES INTO
SUCROSE AND STARCH. SOME SUCROSE
MOVES FROM THE LEAVES TO THE STEM
Time 2 - Time 3
MORE GLUCOSE ,SUCROSE, AND STARCH. MORE
SUCROSE MOVES FROM THE LEAVES TO THE STEMAND SOME GOES TO THE ROOT AND POTATO
Time 3 - Time 4
Time 4 - Time 5
LEAF
POTATO
(tuber)
Time 4
STEM (vascular tissue)
ROOT
Time Interval
Observations
GLUCOSE
IS
PRODUCED
IN
Time 0 - Time 1
THE LEAVES
Time 1 - Time 2
SOME OF THE GLUCOSE ASSEMBLES INTO
SUCROSE AND STARCH. SOME SUCROSE
MOVES FROM THE LEAVES TO THE STEM
Time 2 - Time 3
MORE GLUCOSE ,SUCROSE, AND STARCH. MORE
SUCROSE MOVES FROM THE LEAVES TO THE STEMAND SOME GOES TO THE ROOT AND POTATO
Time 3 - Time 4
STARCH IS BEING ASSEMBLED IN THE
POTATO
Time 4 - Time 5
LEAF
POTATO
(tuber)
Time 5
STEM (vascular tissue)
ROOT
Time Interval
Observations
GLUCOSE
IS
PRODUCED
IN
Time 0 - Time 1
THE LEAVES
Time 1 - Time 2
SOME OF THE GLUCOSE ASSEMBLES INTO
SUCROSE AND STARCH. SOME SUCROSE
MOVES FROM THE LEAVES TO THE STEM
Time 2 - Time 3
MORE GLUCOSE ,SUCROSE, AND STARCH. MORE
SUCROSE MOVES FROM THE LEAVES TO THE STEMAND SOME GOES TO THE ROOT AND POTATO
Time 3 - Time 4
STARCH IS BEING ASSEMBLED IN THE
POTATO
Time 4 - Time 5
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 QUESTIONS
1. WHERE DID THE GLUCOSE COME FROM
IN TIME 1?
GLUCOSE WAS MADE FROM CO2 IN THE AIR
AND WATER FROM THE ROOTS
2. WHAT FUNCTION DOES IT APPEAR THE
STEM PLAYS?
THE STEM IS FOR TRANSPORT
3. WHAT FORM OF CARB TRAVELS
THROUGH THE STEM?
SUCROSE TRAVELS THROUGH THE STEM
4. WHERE DOES MOST OF THE ASSEMBLY INTO
STARCH TAKE PLACE?
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)
THE GLUCOSE CAME FROM THE LEAVES
WHERE IT WAS MADE BY PHOTOSYNTHESIS
7. WHAT HAPPENS TO THE MISSING GLUCOSE IN TIME 5?
WHY?
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?
CELLULAR RESPIRATION BREAKS THE BONDS
OF GLUCOSE TO RELEASE CHEMICAL ENERGY
9) IF PLANTS PERFORM CELLULAR RESPIRATION
LIKE ANIMALS DO, WHAT MOLECULE(S) SHOULD
WE BE ABLE TO MEASURE AS EVIDENCE?
OXYGEN AND CO2.
OXYGEN IS AN INPUT AND CO2 IS AN
OUTPUT.
• WHY WOULD A PLANT NEED TO USE GLUCOSE?
FOR THE SAME REASON WE DO—ENERGY FOR
MOVEMENT/GROWTH
• WHAT PROCESS BREAKS APART FOOD
MOLECULES TO RELEASE ENERGY?
CELLULAR RESPIRATION BREAKS THE BONDS
OF GLUCOSE TO RELEASE CHEMICAL ENERGY
• IF PLANTS PERFORM CELLULAR RESPIRATION
LIKE ANIMALS DO, WHAT MOLECULES SHOULD
WE BE ABLE TO MEASURE AS EVIDENCE?
OXYGEN AND CO2. OXYGEN IS AN INPUT AND
CO2 IS AN OUTPUT.
• Make a new entryDO 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
The amount
of CO2 will…
High CO2
 increase
 be the same
 decrease
Low CO2
 increase
 be the same
 decrease
What will happen
to the color?
 stay yellow
 turn blue
 stay blue
 turn yellow
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
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
 stayed blue
 turned yellow
 turned blue