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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
Why does chlorosis occur in plants?
Chlorosis in plants occurs when there is a lack of chlorophyll, resulting in yellowing of the leaves. This can be caused by nutrient deficiencies, such as nitrogen or iron, or environmental factors like poor soil drainage or alkalinity. Chlorosis affects the plant's ability to photosynthesize and can impact its overall health and growth.
Do plants absorb oxygen along with CO2?
Plants primarily absorb carbon dioxide (CO2) during photosynthesis and release oxygen as a byproduct. They do not absorb oxygen in the same way that they absorb CO2. Oxygen is mainly taken in through plant tissues for respiration, where it is used to break down sugars and produce energy.
What do you call a process where the loss of water through the stomata of a leaf takes place?
Transpiration.
How many photons must be absorbed to reduce one CO2 in the Calvin Cycle?
Six photons must be absorbed to reduce one molecule of carbon dioxide in the Calvin Cycle. Each photon contributes two electrons needed for the reduction process.
What are the row product of photosynthesis?
Raw materials are CO2 and H2O. Products are glucose and O2
What is the end product of carbon dioxide react with hydrazine?
The end products of carbon dioxide reacting with hydrazine are mainly water, nitrogen gas, and solid carbon. The reaction is exothermic and can be used in certain industrial processes for gas generation or fuel production.
Is the product of photosynthesis a protein?
Sort of. Chloroplast has chlorophyll stored in it and that is usually in plants. Many plants have protein but to answer your question, you need to be more specific. Check out the Wikipedia article for details. en.wikipedia.org/wiki/Chloroplast
Does during dark phase does it need chlorophyll?
No, chlorophyll is not needed during the dark phase of photosynthesis. Chlorophyll is a pigment that absorbs light energy to drive the light-dependent reactions of photosynthesis, which only occur during the light phase. In the dark phase (or light-independent phase), known as the Calvin cycle, chemical reactions use ATP and NADPH produced during the light phase to convert carbon dioxide into glucose.
Does dark phase needs chlorophyll and enzymes?
yes,and the chlorophyll is just one of the conmponents that act to obtain energy.
Dark phase of photosynthesis does not need chlorophyll but it does need the chlroplast for several enzymes to assimilate carbondioxide.
Can plankton survive without the sun?
Plankton relies on photosynthesis to produce food, which requires sunlight. Some plankton species can survive in dark conditions by using other sources of energy, such as chemicals or organic matter. However, prolonged absence of sunlight can impact their growth and reproductive abilities.
What is the chemical process whereby plants produce food inside their leaves?
Green leaves contain 'chlorophyll'. It is the compound that gives leaves their 'green' color and is found in the cells where leaves absorb sunlight, in order to be able to 'photosynthesize' molecules of glucose from carbon dioxide and water.
Photosynthesis is the process whereby plants use sunlight and water to convert carbon-dioxide (plus other chemicals) to energy (in the form of certain sugars etc) and oxygen. The sugars (glucose for e.g).could be referred to as 'food' as they allow the plant to produce energy! Just like we can have more energy after drinking a sugary drink, plants have more energy to grow, or produce flowers and fruit, by using sunlight and carbon-dioxide, making their own sugars through photosynthesis!
see: Photosynthesis !
Where does the Calvin cycle occur in the chloroplast?
The Calvin cycle occurs in the stroma of the chloroplast, which is the fluid-filled region surrounding the thylakoid membranes where the light-dependent reactions take place. This cycle involves a series of biochemical reactions that result in the synthesis of sugar molecules from carbon dioxide, powered by ATP and NADPH produced during the light reactions.
Where is the location in cell to the photosynthesis?
Photosynthesis occurs in the chloroplasts of plant cells. Specifically, the process takes place in the thylakoid membranes and stroma within the chloroplasts. This is where light energy is converted into chemical energy in the form of glucose.
Why does photosynthesis not occur in Archaea?
at the time of evolution of archea free oxygen was not present thats why photosynthesis was not possible.But they use H2S gas for photosynthesis;as a result free sulphur is formed which is use by them in respiration
Which part of the leaf enables transpiration to take place?
Transpiration takes place through small openings on the underside of leaves called stomata. These stomata allow water vapor to exit the leaf, helping to regulate the plant's temperature and transport nutrients.
What is the stimulus in chemotropism?
The stimulus in chemotropism is the presence of a chemical gradient in the environment. Plant roots, for example, can grow towards higher concentrations of specific chemicals in the soil to enhance nutrient uptake.
Which is the hydrogen acceptor during light reaction?
In the light reactions of photosynthesis, the hydrogen acceptor is NADP+ (nicotinamide adenine dinucleotide phosphate), which accepts electrons and protons to form NADPH, a molecule used in the Calvin cycle to help in the production of sugars.
No, not everyone can use a respirator. Only individuals who have been properly trained to select, use, and maintain respirators should do so. Additionally, individuals must undergo medical evaluations to ensure they are physically able to wear a respirator.
What is the shape of galactosazone crystels?
- it is fluffy ball shaped
- Even lactosazone is fluffy ball shaped
Do you need a cycling permit to cycle on the towpaths?
Yes, in certain areas you may need a cycling permit to cycle on towpaths. It is always best to check with the local authorities or relevant agencies to determine if a permit is required in the specific location you plan to cycle in.
What is the function of green pigment in chlorophyll?
The green pigment in chlorophyll, specifically chlorophyll a and b, absorbs light energy from the sun during photosynthesis. This pigment helps convert that light energy into chemical energy, which is then used to drive the process of photosynthesis in plants.
What is the green colouring - matter in plants?
The green color in plants is mainly due to chlorophyll, a pigment that absorbs sunlight and plays a key role in photosynthesis. This process allows plants to convert light energy into chemical energy to produce food. Additionally, other pigments such as carotenoids and anthocyanins can contribute to the overall coloration of different plant parts.
What are the two different reaction of photosynthesis and explain each reaction?
These two reactions are:
1. Light reaction or Hill Reaction- in which the photolysis of water takes place to form energy rich compounds like NADPH2 & ATP and O2 is liberated from water.
2. Dark reaction or Blackman reaction- in which the CO2 is assimilated to form carbohydrates by utilizing the energy from the compounds of Hill reaction.
It can also be called photosynthesis in the light-dependent stage and light-independent stage (dark stage).
What are the two major steps of light reaction?
The two major steps of the light reaction in photosynthesis are photon absorption and water oxidation. Photon absorption by chlorophyll molecules in the thylakoid membrane leads to the excitation of electrons, which triggers a chain of reactions culminating in the splitting of water molecules to release oxygen.
