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Photosynthesis
This category is for questions about the chemical process in which autotrophic organisms use sunlight, carbon dioxide and water to make glucose, water and oxygen. This process is vital to life and is of great importance in biology.
6,415 Questions
What is the purpose of the light dependent reaction and what is it called?
The purpose of the light dependent reaction is to convert light energy into chemical energy in the form of ATP and NADPH. This process, also known as the light reactions or light-dependent photosynthesis, occurs in the thylakoid membranes of chloroplasts.
Respiration is a chemical reaction used to?
Respiration is a chemical reaction used to convert glucose and oxygen into energy in the form of ATP, releasing carbon dioxide and water as byproducts. This process occurs in the cells of living organisms to provide the energy needed for cellular functions and metabolism.
Why is photorespiration bad for a plant?
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Photorespiration is a process of metabolic pathway that consumes oxygen, releases carbon dioxide, generates no ATP, and decreases photosynthetic output; generally occurs on hot, dry, bright days, when stomata close and the oxygen concentration in the leaf exceeds that of carbon dioxide.
Photorespirationoccurs because Rubisco can utilize O2 as a substrate instead of CO2. It means when stomata partially close on hot day, dry day, CO2 levels drop as COÂ2 is consumed in the Calvin cycle. At the same time, O2 levels rise as the light reaction converts light to chemical energy. When the OÂÂ2:CO2 ratio increase, there is not enough COÂ2 and rubisco can add O2 to Calvin cycle (RuBP). Therefore, photorespiration consumes O2 and organic fuel and releases CO2 without producing ATP or sugar. Photorespiration reduces net C fixation considerably. Photorespiration also uses ATP & NADPH.
photorespiration is absent in c4 plants but present in c3 plants.It is because c4 plants are present in dry areas.
What is the importance of positive phototropism?
Positive gravitropism (plants grow up) benefits the plant because it has a better root structure. It is an adaption of plants to gravitropism which has a weak root system, however it is beneficial in certain areas for plants to be gravitropes.
How is the leaf structured to carry out photosynthesis?
Plants use photosynthesis, water, and oxygen to create the things they need to survive, however plants cannot do this without its leaves. Especially when the leaves have to adapt to new environments. The leaves go through photosynthesis, which they can only do because they have chloroplasts in them, which convert the sunlight into food. The plants also have cuticles which help the leaves contain the water it absorbs.
What is an oxygen carbon cycle?
The Carbon Dioxide- Oxygen Cycle relates to the relationship between Carbon Dioxide [CO2] breathing plants and Oxygen [O2] breathing lifeforms. All oxygen-breathing lifeforms take in Oxygen and exhale CO2. Plants take in the CO2 and use it in their photosynthesis process and in turn give off oxygen.
A:The Carbon Dioxide-Oxygen Cycle is a continuously occurring process whereby animals inhale Oxygen and then exhale Carbon Dioxide, and plants use the CO2 and "exhale" O2. A:Plants and other producers use carbon dioxide in photosynthesis.They produce oxygen as a waste product. Carbon dioxide moves
from the air into the leaves of plants. Oxygen moves from the
plant into the air through the leaves.
A:Almost all living things, including plants, get energy from cellularrespiration. This process releases energy from the sugar molecules
in food. Oxygen is used in cellular respiration. Carbon dioxide is
produced as a waste product.
A:The oxygen produced during photosynthesis is used in cellularrespiration. The carbon dioxide produced in cellular respiration is
used in photosynthesis. carbon dioxide and oxygen move through the ecosystem in this path called the CARBON DIOXIDE-OXYGEN CYCLE.
A:During photosynthesis, algaet green plants take in CO2 from the air. They use CO2, along with H2O and the sun's energy, to make their own food (respiration). In this process, O2 is released as a waste product. Plants and animals need this oxygen to release energy from food.
A:During photosynthesis green plants take in CO2 from the air. They use CO2 along with H2O and the sun's energy to make their own food (respiration). In this process O2 is released as a waste product. Plants and Animals need O2 to release energy from food. In the process O2 is taken in and CO2 is released. Carbon is also released as CO2 when organisms die and decay (work of decomposers). A:The carbon dioxide-oxygen cycle is the cycle in which living things (such as plants and animals) take in "oxygen" and let out "carbon dioxide." A:Humans & plants. Humans inhale oxygen, which is what plants excrete, and then the human excretes carbon dioxide, which the plants take in.A.
In short plants release oxygen , that animals will take in and animals excrete carbon dioxide for the plants to produce their own food through photosynthesis .
Where does the O2 released during photosynthesis come from?
"One of the first clues to the mechanism of photosynthesis came from the discovery that the oxygen given off by plants through their stomata is derived from water and not from carbon dioxide." (Biology, Seventh Edition; Campbell, Reece. Chapter 10: Photosynthesis, page 184) It comes from the water
How photosynthesis and respiration are similar and different?
Photosynthesis and cellular respiration are similar in the sense that they are simply (and only when talking about the SIMPLE aspect of it) the opposites of each other.
EX -- 6 CO2+ 6 H2O → C6H12O6+ 6 O2 is the formula for photosynthesis.
C6H12O6+ 6 O2→ 6 CO2+ 6 H2O is the formula for cellular respiration.
LITERALLY.
They are different because the actual processes and cycles that happen during photosynthesis and cellular respiration (respectively) are completely different.
PS - light dependent reactions and Calvin cycle
CR - Krebs cycle and electron transport chain
What is the reason plants and animals do cellular respiration?
well cellular respiration is majorly needed in animal and plant cells because it is how the cells get energy to reproduce and to do the job they were assigned to do when they where made to do like with plant cells without cellular respiration they wouldn't be able to turn carbon dioxide into oxygen which means we couldn't breathe and for animal cells they would never be able to do things like reproduce wherein they would need to be able to do so that your body can grow and digest your food and convert the oxygen u breathe into energy
Which two biogeochemical cycles depend directly on photosynthesis?
The carbon cycle and the oxygen cycle depend directly on photosynthesis. Photosynthesis converts carbon dioxide into organic compounds while releasing oxygen as a byproduct. This process is essential for maintaining the balance of carbon and oxygen in the atmosphere and ecosystem.
Different between oxidative phosphorylation and substrate level phosphorylation?
Substrate-level phosphorylation occurs during Glycolysis and the Kreb's Cycle and involves the physical addition of a free phosphate to ADP to form ATP. Oxidative phosphorylation, on the other hand, takes place along the electron transport chain, where ATP is synthesized indirectly from the creation of a proton gradient and the movement of these protons back accross the membrane through the protein channel, ATP synthase. As the protons pass through, ATP is created.
Which of the following statements about the light reactions of photosynthesis are true?
- The light reactions occur in the thylakoid membrane of the chloroplast.
- The primary goal of the light reactions is to convert light energy into chemical energy in the form of ATP and NADPH.
- Water is split during the light reactions to provide electrons for the photosystems.
- The light reactions produce oxygen as a byproduct.
What occurs during the dark reactions of photosynthesis?
carbon dioxide enters the stroma of the chloroplast where it binds to RuBP (a 5 carbon compound) to form an unstable 6 carbon compound which immediataly breaks down to form 2 GP (glycerate 3-phosphate). Some of the ATP and NADPH from the light dependant reaction are used to convert GP into TP (glyceraldehyde 3-phosphate). The NADPH is reduced to NADP which is returned to the light dependant reaction.
pairs of the TP compounds are joined to form hexose sugar which is then polymerized to form starch which is stored by the plant.
it is important to note that not all of the TP is used to form hexose.
of the 12 TP formed, 10 TP is returned to join with RuP in the cell to regenerate RuBP to continue the cycle (this is where the rest of ATP is used)
How does the process photosynthesis affect the forest?
Sunlight allows forest life, such as plants, bushes and trees to grow. if they dont receive the certain amount of sunlight, they could potentially die out. same goes for the water in a forest. if the sunlight doesnt reach the water, then the water cycle cant do it's job, and the water will either build up, or could become a swamp.
Hope this helps!!
Are atoms used in photosynthesis and cellular respiration recycled?
Yes, atoms involved in photosynthesis and cellular respiration are continuously recycled within living organisms. During photosynthesis, carbon, hydrogen, and oxygen atoms are used to make glucose from carbon dioxide and water. In cellular respiration, glucose is broken down to release energy, carbon dioxide, and water, recycling the atoms back into the environment.
Did the Druids perform sacrifice?
As almost all religions at that time including Judaism and Roman religions, they certainly did sacrifice animals. However, I believe that you are referring to the idea that Druids performed human sacrifice. Though I certainly wasn't there at the time and so cannot give you a definite answer, the main evidence for human sacrifice conducted by the Druids are Roman writers including Julius Caesar who wrote
[The Gauls] believe, in effect, that unless a man's life is paid for by another man's, the majesty of the immortal gods might not be appeased. They use figures of immense size, whose limbs, woven out of twigs, they fill with living men and set on fire, and the men perish in a sheet of flame. They believe that the execution of those who have been caught in the act of theft or robbery is more pleasing to the immortal gods; but when the supply of such fails they resort to the execution even of the innocent.
Though this would seem to prove something, it does not. This piece of writing should be looked on as suspect because the Romans were just as guilty of cooking up propaganda to justify invading regions as we are today. Furthermore the evidence for the druids performing human sacrifice is either entirely Roman which should be viewed as suspect for the reasons stated above, or is written by Christian writers which should be viewed as even more suspect because Christianity in the later Roman era and later antiquity were constantly persecuting Pagans.
What may have been the case, as Druids were not united in one complete religion or set of deities, is that some groups of druids did perform human sacrifice and some did not.
Yes. When plants use photosynthesis to convert light energy from the sun and carbon dioxide into energy that the plant can use, oxygen and glucose are the end products.
Equation for photosynthesis:
6CO2 + 6H2O + Energy ----> C6H12O6 + 6O2
C = Carbon
O = Oxygen
H = Hydrogen
(arrow means "yield")
Manufacturing firms typically hold inventories of raw materials, components, work-in-process, and finished goods. Retailers and wholesalers also hold inventories of finished goods for sale to customers.
What are produced during the light reactions of photosynthesis?
during a light reaction two things are responsible for producing a reaction containing the 5 elelments responsible for these reaction. First and foremost an wavelength supplied by a DC current in other words what comes in and out of the friction of the wave... to be made from the original source one is then able to determine what is beiong produced by the actual current. Your question is fundamentally flawed in the fact that you have not stated the acvtual source of the light in which comes forth from. Are we talking about gas? are we talking about electromagnetisis? Or is it aq simple halogen light that you speak of? In order to assist you further I must know more information, you must restate your question in the form that would indicate about which light source youi speak of..
much like i could ask what comes out of the exhaust fromn a car.....One would Argue that well of couse exhaust fumes do,.... but what if i were speaking in terms of the car i was describing was electric?
that being said please try to state your questions clearer in the future and i may be willing to answer them
How and when to perform rudrabhishekam?
Rudrabhishekam is performed to Lord Shiva. legend goes thaat Lord Shri Rama performed Rudrabhishekam at Rameshwaram before crossing the sea to reach lanka. This abhishekam is performed to wash away one's sin and bring home prosperity and happiness in the family. Pradosham is the one of the favourite days for Lord Shiva and this Rudrabhishekam can be performed on this day. Or alternatively Monday's is also considered to be auspicious day for Lord Shiva. Rudrabhishekam to be accompanied by the recital of Namakam and Chamakam and can be performed at any Shiva Temple or at one's Own house rather than a rented House. Prasanna aprkmr@gmail.com
What is the equation of the Calvin cycle?
The Calvin cycle is a series of chemical reactions that take place in the chloroplasts of plants during photosynthesis. The general equation for the Calvin cycle is: 3 CO2 + 6 NADPH + 5 H2O + 9 ATP → G3P (glyceraldehyde-3-phosphate) + 2 H+ + 6 NADP+ + 9 ADP + 8 Pi.
What is the chemical reaction for cellular respiration in which organelle does it occur?
C6H12O6 + O2 ---> CO2 + H2O + Energy (ATP)
basically
Glucose + Oxygen ---> Carbon dioxide + Water + Energy (as ATP)
The relationship between photosynthesis and cellular respiration is usually described as a cycle?
Photosynthesis removes carbon dioxide from the atmosphere. Cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food.
