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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 life cycle of a dwarf hinoki cypress?

A dwarf hinoki cypress, like other cypress trees, goes through a life cycle that includes seed formation, germination, growth, maturity, reproduction through cones, and eventually decline and death. They typically take several years to reach maturity before they are capable of producing cones and reproducing. With proper care and ideal conditions, they can live for several decades to even a few centuries.

Is locomotion a function?

Yes, locomotion is a function that involves the ability of an organism to move from one place to another. It is an essential biological process for various living organisms to carry out their daily activities and fulfill their survival needs.

What is the meanest snake in the world?

The only snakes that have been known to attack a human, without provoction, are The water moccosin and the cobra. The only snakes that have been known to attack a human, without provoction, are the water moccosin and the cobra.

What are the example of dark reaction?

A good example is the dulling of colours in light. If you leave a coloured piece of paper in light with a part of it covered by shade, the bit exposed to light will become duller over time whereas that in the shade will retain most of its colour. This is because light is reacting with the coloured compound and degrading it.

What effect does the amount of light have on photosynthesis?

Light intensity directly affects the rate of photosynthesis. As light intensity increases, so does the rate of photosynthesis, up to a certain point where the rate levels off or decreases. Plants require a certain amount of light to carry out photosynthesis efficiently.

What direction is food transferred in a vascular plant?

Food is transferred downwards in a vascular plant, from the leaves where it is produced through photosynthesis to the roots where it is stored or used for growth. This process occurs through the phloem tissue, which transports sugars and other nutrients throughout the plant.

What 4 ingredients are needed by a plant to perform photosynthesis?

The four ingredients needed by a plant to perform photosynthesis are sunlight, carbon dioxide, water, and chlorophyll. Sunlight provides the energy needed for the process, while carbon dioxide and water are used to produce glucose. Chlorophyll is the pigment that captures sunlight and gives plants their green color.

How do the events in the Calvin cycledepend on the light-dependent reactions?

The Calvin cycle depends on the products of the light-dependent reactions (ATP and NADPH) to power the conversion of CO2 into carbohydrates. Without ATP and NADPH produced in the light-dependent reactions, the Calvin cycle cannot proceed.

What is the job of the stomata in photosynthesis?

Stomata open to let the leaves take in CO2 during process of photosynthesis, and allow oxygen to escape. They also allow water to escape, thus aiding sap transport.

Some desert plants close their stomata during the heat of the day, and only open them at night. The CO2 they absorb during the night, they then store up, and allow photosynthesis to take place during the daylight. This is called C4 photosynthesis.

How do plants create food What is the formula for photosynthesis Where does photosynthesis take place and why is it possible?

The formula for photosynthesis (abv. photos.) is: Light Energy + Co2 + H20 --------> Carbohydrate + Oxygen As a whole, photos. takes place in the chloroplasts of a plant cell. There are two main reactions that occur during photos. The light-dependent reaction and the light-independent reaction. Each reaction takes place within a different section of the chloroplasts. The Thylakoids are the sight of the light-dependent reactions. Thylakoids look like little green coins. When they are stacked, they are called grana. Light dependent reactions are very complicated. They involve two photosystems, called photosystem II and I. Each photosystem has it's own little reaction that is complicated. PS I makes ATP and PS II makes ATP + HADPH. PS II is famous for spliting H2O's into H+ and O2. The stroma is the sight of the light indepentdent reactions. Stroma is the gel-like area outside of the thylakoids. As the name suggests, these reactions don't require light. This is called the Calvin Cycle. The Calvin Cycle pretty much takes 3CO2 and changes it into 6 PGAL's + 3C.
Were dose food-making in plants take place?
Were dose food-making in plants take place?

How is glucose formed in most autotrophs?

Autotrophs obtain glucose through photosynthesis, where they convert carbon dioxide and water into glucose using sunlight as an energy source. This process occurs in the chloroplasts of plant cells, where chlorophyll captures light energy to drive the chemical reactions that produce glucose.

What are needed for seed germination?

The key Acronym : AWW.

That stands for air, water and warmth. Take note that this is for germination and not respiration/ photosynthesis/ transpiration.

Hope that helped ;)

Why are plants important to animals?

Animals get most of their energy and nutrition from plants. Animals either eat the plants, or eat animals that ate the plants. Also, it gives animals a place to live. Such as spiders, ants, moles, and other animals. Plants also provide animals oxygen.

What does photosynthesis do to the planet?

Photosynthesis is vital for the planet as it converts carbon dioxide into oxygen, which is essential for the survival of most living organisms. It also provides energy for plants to grow, supporting food chains and ecosystems. Overall, photosynthesis helps regulate the Earth's atmosphere and sustains life on the planet.

What are the two parts of a water molecule that are used to convert sunlight to cell energy?

The two parts of a water molecule that are used to convert sunlight to cell energy are hydrogen and oxygen. During the process of photosynthesis, water molecules are split into oxygen, which is released as a byproduct, and hydrogen, which is used to produce energy molecules such as ATP.

The absorption spectrum for chlorophyll reveals that it?

  • Chlorophylls absorb light most strongly in the red and violet portions of the spectrum. Green light is poorly absorbed so when white light (which contains the entire visible spectrum) shines on leaves, green rays are transmitted and reflected giving leaves their green color. The similarity of the action spectrum of photosynthesis and the absorption spectrum of chlorophyll tells us that chlorophylls are the most important pigments in the process.

Is it true that materials that need to be converted into a useful product are called raw materials?

Yes, that is correct. Raw materials are the basic materials or substances used in making a product. They need to undergo some form of processing or conversion before they can be used to manufacture a final product.

What is the result When carbon dioxide is low in the leaf and the Calvin cycle cannot proceed efficiently?

When carbon dioxide is low in the leaf, the Calvin cycle cannot proceed efficiently due to a lack of substrate. This leads to a decrease in photosynthesis and a buildup of reactants from the light reactions. As a result, the plant's growth and productivity may be limited.

What is dark reaction of plant?

The dark reaction, also known as the Calvin cycle, is a series of biochemical reactions that occur in the stroma of chloroplasts in plants. It uses energy captured during the light-dependent reactions to convert carbon dioxide into sugars like glucose. This process does not require light and is essential for the synthesis of carbohydrates in plants.

What are the things needed by plants to do photosynthesis?

Plants need sunlight, water, and carbon dioxide to carry out photosynthesis. These essential components are used by plants to produce glucose, which serves as their primary energy source. Additionally, chlorophyll, a pigment found in plant cells, helps capture sunlight and convert it into energy during the photosynthesis process.

What are the materials needed to start photosynthesis?

Light, carbon dioxide, and water are the materials needed to start photosynthesis. The carbon dioxide is needed for the Calvin cycle while the light and water are required for the light reactions.

What are the light independent and dependent stages of photosynthesis?

Light dependent reactions produce ATP and NADPH from energy captured from light. Therefore without light it cannot proceed. Light independent reactions fix carbon dioxide into glucose using the ATP and NADPH produced in the light dependent reactions. So light independent reactions can occur without light as long as CO2, ATP and NADPH is present.

How are the reactants and products in the light dependent cycle of photosynthesis changed?

In the light-dependent cycle of photosynthesis, reactants such as water and light energy are converted into products such as oxygen, ATP, and NADPH through a series of complex reactions involving photosystems I and II, electron transport chains, and ATP synthase. These chemical transformations are essential for capturing and converting light energy into chemical energy that can be used in the Calvin cycle to produce glucose.

What six factors affect photosynthesis?

Six factors that affect photosynthesis are light intensity, temperature, carbon dioxide concentration, water availability, chlorophyll concentration, and nutrients. Changes in any of these factors can impact the rate of photosynthesis in plants.