Photosynthesis Flashcards
This is the process of the plant to create their own food by converting light energy to chemical energy.
Photosynthesis
What do plants need for photosynthesis?
Water, carbon dioxide, light, and chlorophyll
What do call the organisms that make their own food using light?
Photoautotroph
Organisms that utilize inorganic chemical to synthesize sugars as their food
Chemoautotroph
Organisms that depends on autotrophs for their food
Heterotrophs
What are the 3 major events during photosynthesis?
- Light energy converted to chemical energy
- Water is split to produce oxygen gas.
- CO2 fixed into sugar. C6H12O6
What is the chemical equation for photosynthesis?
6 CO2 + 6H2O + Sunlight —> C6H12O6 + 6 O2
What are the reactants during photosynthesis?
Carbon Dioxide and Water
What are the products of photosynthesis?
Oxygen and Glucose
What is the chemical formula of Glucose?
C6H12O6
Glucose is a
Monosaccharide
What are the 2 polysaccharide in plants?
Cellulose and Starch
Tiny pores found underside of leaves where gas exchange happens.
Stomata
Responsible for the shrinking and swelling of Stomata
Osmotic pressure
What ORGAN of plant photosynthesis takes place?
Leaves
What part of plant cell photosynthesis occurs?
Chloroplasts
Space inside Chloroplasts
Stroma
Photosynthetic Reaction that depends on light.
Light dependent or light reaction
Photosynthetic reaction that doesn’t depend on light.
Calvin cycle or light independent reaction
Who discovers the Calvin cycle?
Melvin Calvin, Andrew Benson and James Bassham
What are the energy carrier that light dependent produce to deliver to Calvin cycle?
ATP and NADPH
What is NADP+ complete name?
Nicotinamide Adenine Dinucleotide Phosphate
In light dependent reaction, photolysis happens where water is split into
Hydrogen ion and oxygen gas
What are the two protein complexes that are responsible for capturing photons to excite electrons during the light reaction?
Photosystem 1 and Photosystem 2
What are the protein complexes that participate during electron transport chain?
Plastoquinone, Cytochrome B6F and Plastocyanin
Enzyme that is responsible to charge the NADP+ to NADPH
Ferredoxin Reductase
Chemiosmosis happens because of
Hydrogen gradient - difference of hydrogen concentration in lumen and stroma
Enzyme that is responsible for the photophosphorylation
ATP Synthase
What are the products of Light reaction?
Oxygen gas, NADPH, and ATP
What are the stages of Calvin cycle?
Carbon Fixation, Reduction of 3-PGA, and Regeneration of RuBP
During the Carbon Fixation, RuBP molecules and Carbon Dioxide combines with the help of what enzyme?
RuBisCo
1 RuBP combines with 1 CO2 to produce how many molecules of 3-PGA?
2
In the reduction of 3-PGA, how many ATP and NADPH are needed if we have 6 3-PGA?
6 ATP and 6 NADPH
How many cycles are needed to produce 1 molecule of C6H12O6?
6 cycles
In the regeneration of RuBP, if we have 5 molecules of G3P how many ATP are needed?
3 ATP
Calvin cycle occurs what part of Chloroplasts?
Stroma
Photosynthesis is a process that harnesses light energy from the Sun to convert carbon dioxide and water into glucose. Which organelle of a plant cell does photosynthesis take place?
Chloroplast
Which part of plants is considered as the primary organ for photosynthesis?
Leaf
In which layer of leaves, the chloroplasts are mostly concentrated or located?
Mesophyll
The green pigment in plants that directly captures light energy and convert it to chemical energy is
Chlorophyll a
It is the first stage of photosynthesis which involves the converting of light energy to chemical energy in the form of ATP and NADPH is called _________________________.
Light-dependent reactions
The light- dependent reactions takes place in the ___________________ of the chloroplast.
Thylakoid membrane
In which part of the chloroplast the light-independent reactions or Calvin cycle occur?
Stroma
What are the products of light-dependent reactions?
NADPH, ATP, and oxygen
Which of the following gases/substances is given off by plants as one of the products of light reactions stage of photosynthesis?
Oxygen
In which structure of a plant leaf where carbon dioxide enters and oxygen is given off?
Stomata
Enzymes are catalysts that are directly involved in the process of photosynthesis. Which of the following enzymes is involved in the first major step of carbon fixation to form the energy rich glucose in the Calvin Cycle?
RuBisCO
What are the raw materials of photosynthesis?
Carbon dioxide and water
Which raw material of photosynthesis is directly used in light-dependent reactions?
Water
What are needed in light-independent reaction or Calvin cycle to produce glucose?
NADPH, ATP, and carbon dioxide
In light-dependent reaction, through light energy, water molecules are broken down into hydrogen ions, electrons and oxygen gas. This process is called ___________________.
Photolysis
Chemical name of RuBisCo
RIBULOSE BIPHOSPHATE CARBOXYLASE
Chemical name of C6H12O6
GLUCOSE
Chemical name of G3P
GLYCERALDEHYDE 3 PHOSPHATE
Chemical name of RuBP
RIBULOSE BIPHOSPHATE
Chemical name of PGA
PHOSPHOGLYCERATE