fotosintesis pada tumbuhan

1. PROSES
FOTOSINTESIS
Anggota Kelompok :
1. Baiq Delia Putri A.
2. Anggi Fathaniar
3. Nadia Febriana

2. FOTOSINTESIS
Fotosintesis adalah suatu proses
pembuatan atau pembentukan makanan
yang dilakukan oleh tumbuhan, terutama
tumbuhan yang mengandung zat hijau
daun, yaitu klorofil dengan bantuan
bantuan energi cahaya matahari.
Reaksi : 6𝐶𝑂2 + 6𝐻2𝑂 → 𝐶6𝐻12𝑂6 + 6𝑂2

3. Dimanakah tempat
terjadinya fotosintesis?
Tempat proses fotosintesis
berlangsung di daun, tepatnya di sel
tumbuhan bernama Kloroplas. Sel-
sel ini mengandung klorofil. Dalam
prosesnya, karbondioksida di udara
masuk melalui stomata di daun.

4. STRUKTUR DAUN
• Sebagian fotosintesis terjadi di
lapisan palisade.
• Pertukaran gas 𝐶𝑂2 dan
𝑂2 terjadi saat stomata yang
dikelilingi oleh sel penjaga
terbuka pada bagian bawah
daun.

5. • Terdiri dari dua lapis membran bagian dalam
• Bagian yang tebal disebut tilakoid. Kumpulan
tilakoid disebut granum.
• Stroma adalah cairan yang mengelilingi tilakoid
STRUKTUR KLOROPLAS

6. KLOROFIL
• Terletak di membran tilakoid
• Klorofil memiliki 𝑀𝑔+
di bagian tengah
• Pigmen klorofil memperoleh energi
(foton) dengan cara mnyerapnya pada
panjang gelombang tertentu (blue-420
nm dan red-660 nm yang paling efektif).
• Tanaman berwarna hijau karena Panjang
gelombang berwarna hijau dipantulkan,
tidak diserap.

8. PIGMEN
● Klorofil A merupakan pigmen
fotosintesis paling penting.
● Pigmen ini tenggelam dalahm membran
kloroplas yang disebut fotosistem.
● Pigmen lain yang terdapat di daun :
a. Klorofil B
b. Karotenoid (orange/merah)
c. Xantofil (kuning/coklat)

9. PROSES
FOTOSINTESIS

10. DAY VS NIGHT PROCESS
REAKSI TERANG REAKSI GELAP
Merupakan tahap sintesis dari
fotosintesis. Menangkap energi
matahari untuk mengubah energi
kimia menjadi gula.
Reaksi yang memerlukan
cahaya. Cahaya diserap oleh
pigmen.

11. REAKSI TERANG
Reaksi terang membutuhkan cahaya
dan terjadi di membrane tilakoid.
• Membutuhkan cahaya dan air.
• Dibentuk molekul penyimpanan
energi (ATP dan NADPH).
• Oksigen merupakan produk
sampingan fotosintesis

12. PROSES REAKSI TERANG

13. • Fotosistem I menangkap foton. Hal itu mengakibatkan elektron di dalamnya
tereksitasi.
• Terbentuk ion H+, elektron, dan O2. Kemudian, O2 akan dilepaskan ke udara.
• Elektron hasil pemecahan molekul air masuk dalam fotosistem II, lalu diterima
oleh akseptor elektron.
• Elektron diangkut menuju kompleks sitokrom, sehingga terjadi peningkatan
energi. Energi tersebut digunakan untuk mengubah ADP menjadi ATP.
• Elektron dari sitokrom diangkut menuju fotosistem I, lalu ke akseptor elektron
berikutnya.
• Elektron akan diterima oleh senyawa NADP. Hal ini mengakibatkan terikatnya
ion H+ hasil fotolisis air oleh NADP. Pengangkutan elektron inilah yang disebut
transpor elektron nonsiklik.
• Elektron dari fotosistem I akan diangkut menuju akseptor elektron menuju
kompleks sitokrom lalu kembali lagi ke fotosistem I. Proses ini berlaku jika
kebutuhan ATP kurang mencukupi.

14. REAKSI GELAP

15. PROSES FOTOSINTESIS
REAKSI TERANG
Reaksi yang memerlukan cahaya.
Cahaya diserap oleh pigmen.
REAKSI GELAP
Tahap sintesis dari fotosintesis.
Menangkap energi matahari
untuk mengubah energi kimia
menjadi gula.
01 02

16. —FAMOUS SCIENTIST
“This is a quote, words full of wisdom that
someone important said and can make the
reader get inspired.”

17. RESPIRATION VS PHOTOSYNTHESIS
PROCESS RESPIRATION PHOTOSYNTHESIS
GAS IN Oxygen Carbon dioxide
GAS OUT Carbon dioxide Oxygen
TIME At all times Daytime only
EQUATION Oxygen + glucose = energy C02 + water = glucose + water

18. light
oxygen
carbon
dioxide
carbohydrates
water
THE PROCESS

19. DETAIL OF THE PROCESS IN A CELL
light
water
oxygen
CO2
glucose

20. AWESOME
WORDS

21. ANALYSIS OF THE PHOTOSYNTHESIS
Effect of temperature on
the rate of photosynthesis
*Temperature in degrees Celsius
Follow the link in the graph to modify its data and then paste the new one here. For more info, click here
Maximum rate of
photosynthesis reached at
the “optimal” temperature
*Rate
of
photosynthesis

22. 280 g
O2 expelled
150 g
CO2 incoming
oxygen
carbon
dioxide

23. VOCABULARY
03
You can enter a subtitle here if you need it

24. C3 vs C4 PHOTOSYNTHESIS
C3 PHOTOSYNTHESIS C4 PHOTOSYNTHESIS
Neptune is the eighth and farthest
planet from the Sun and the fourth-
largest by diameter in the entire
Solar System
Mercury is the closest planet to the
Sun and the smallest in the entire
Solar System. It was named after
the Roman messenger god

25. THREE PRINCIPAL CHEMICAL ELEMENTS
OXYGEN
Mercury is the closest
planet to the Sun and the
smallest of them all
HYDROGEN
Venus has a beautiful
name and is the second
planet from the Sun
CARBON DIOXIDE
Despite being red, Mars is
actually a cold place. It’s
full of iron oxide dust
O2 H CO2

26. MORE IMPORTANT ELEMENTS
Despite being red, Mars
is a cold place
SUN
Venus is the second
planet from the Sun
WATER
Jupiter is the biggest
planet of them all
CHLOROPHYLL GASES
Saturn is a gas giant
and has several rings

27. A PICTURE
ALWAYS
REINFORCES THE
CONCEPT
Images reveal amounts of data,
so remember: use an image
instead of a long text

28. A PICTURE WORTH A THOUSAND WORDS

29. Saturn is composed
mostly of hydrogen
and also helium
Venus has a beautiful
name, but also very
high temperatures
CARBON
NADPH
VOCABULARY
ATP
Mercury is the
smallest planet in the
entire Solar System
CALVIN CYCLE
Despite being red,
Mars is actually a very
cold place
CHLOROPLAST
Jupiter is a gas giant
and the biggest
planet in the Solar
System
GLUCOSE
Neptune is the fourth-
largest planet in the
Solar System

30. COMPOSITION OF EARTH’S ATMOSPHERE
Nitrogen Oxygen Others
78% 21% 1%

31. PHOTOSYNTHESIS TABLE
STAGES LOCATION INPUT OUTPUT
LIGHT
REACTIONS
Thylacoids Light H20 ATP - NADPH
CALVIN
CYCLE
Stroma CO2 - NADPH Sugar - NDP+

32. BEST PLACES FOR PHOTOSYNTHESIS
Despite being
red, Mars is a
cold place
PLACE #1
Venus is the
second planet
from the Sun
PLACE #3
Jupiter is the
biggest planet
of them all
PLACE #2 PLACE #4
Saturn is a gas
giant and has
several rings

33. CALVIN CYCLE
1st
2nd
3rd
Saturn is a gas giant and
has several rings
CARBOXYLATION
Despite being red, Mars is a
cold place
REDUCTION
Venus is the second planet
from the Sun
REGENERATION

34. 200,000+
PPM of oxygen in the atmosphere

35. 15h 55m 23s
Despite being red, Mars is a very cold place
12h 37m 15s
Jupiter is the biggest planet of them all
14h 24m 25s
Mercury is the smallest planet of them all

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