What are the characteristics of photosynthesis compared to respiration

I thought it would be useful to see how you drew that diagram, I guess it was to illustrate that plants photosynthesize more during the day and respire more at night. Different diagrams want to ask different questions.

Respiration: The vital activities of living organisms all need to consume energy, which comes from the oxidative decomposition of organic substances such as sugars, lipids and proteins in living organisms. The total process of organic matter in living organisms undergoes a series of oxidative decomposition in the cell to finally produce carbon dioxide or other products and release energy, which is called respiration (also known as biological oxidation).

Photosynthesis: For green plants, during the sunny day, they will use the energy of sunlight to photosynthesize to obtain nutrients necessary for growth and development.

The key players in this process are the chloroplasts inside. Under the action of sunlight, chloroplasts convert carbon dioxide and water absorbed by the roots into glucose and release oxygen by the chloroplasts

co2+h2o→c(h2o)n+o2+h2o

Photosynthesis is 0 at night and has an overall rise and then fall to 0 during the day. Respiration occurs both day and night, and the overall trend is relatively flat. The area of the photosynthesis curve and the horizontal axis is larger than that of respiration, so the plant grows from a small size.

(1) Photosynthesis and respiration are two processes that are just opposites, and the differences between the two are as follows:

Photosynthesis respiration.

Performed inside the chloroplasts of plants.

It can only be done under light.

Exhale carbon dioxide and release oxygen.

The production of organic matter, the storage of energy and the living part of the plant can be carried out.

It can be done with or without light.

Absorbs oxygen and releases carbon dioxide.

Decomposes organic matter and releases energy.

2) The link between photosynthesis and respiration.

Photosynthesis provides substances (organic matter and oxygen) for respiration, and respiration provides the raw materials for photosynthesis, both of which are interdependent and opposed.

1. Respiration: The total process of organic matter in the organism undergoes a series of oxidative decomposition in the cell, and finally produces carbon dioxide, water or other products, and releases energy, which is called respiration.

2. Photosynthesis: The process by which green plants use the light energy of the sun to assimilate carbon dioxide and water to make organic matter and release oxygen, which is called photosynthesis.

3. Difference: Respiration is carried out within the first chondrone, and photosynthesis is carried out within chloroplasts. One consumes oxygen, one emits oxygen, one consumes sugars, one emits sugars, one needs light, and one does not need light.

4. Connection: The reactants of respiration are the products of photosynthesis.

Photosynthesis: Photosynthesis usually refers to the process by which green plants (including algae) absorb light energy, synthesize carbon dioxide and water into energetic organic matter, and release oxygen at the same time. It mainly includes two stages: light reaction and dark reaction, which involves important reaction steps such as light absorption, electron transfer, photosynthetic phosphorylation, and carbon assimilation, which is of great significance for realizing the energy conversion in nature and maintaining the carbon-oxygen balance of the atmosphere. The process by which green plants use the sun's light energy to assimilate carbon dioxide (CO2) and water (H2O) to make organic matter and release oxygen is called photosynthesis.

The organic matter produced by photosynthesis is mainly carbohydrates and releases energy.

The difference between photosynthesis and respiration is:

1. The parts that occur are different, photosynthesis actually needs cells with chloroplasts to be carried out, while respiration is the ability of living cells in all parts to be carried out, because living cells need to have life activities, which requires energy to be able to support, and respiration is to be able to provide such energy.

2. The products are also different, the products of photosynthesis are actually organic matter and oxygen, but the products of respiration are carbon dioxide and water.

3. The transformation of energy is also different, photosynthesis is able to produce organic matter, which can convert light into energy storage, but respiration is the opposite, it is necessary to decompose organic matter, so as to provide energy for life. As for the relationship between the two, it is interdependent.

Difference Between Photosynthesis and Respiration in Plants:

Photosynthesis is when plants absorb solar energy through chloroplasts, convert carbon dioxide and water into organic matter, and convert solar energy into bioenergy for storage in organic matter.

Site of photosynthesis: plant cell chloroplast;

Conditions of photosynthesis: light, enzymes;

Raw materials for photosynthesis: water, carbon dioxide;

Yield of photosynthesis: organic matter such as sugars;

Energy change in photosynthesis: light energy is converted into chemical energy;

Site of respiration: mitochondria of animal and plant cells;

Conditions of respiration: enzymes;

Raw materials for respiration: organic matter such as sugars, oxygen;

Output of respiration: carbon dioxide, water, a lot of energy;

Energy change of respiration: stable chemical energy is transformed into active chemical energy;

Differences: photosynthesis is carried out in chloroplasts, respiration is carried out in the cytoplasmic matrix and mitochondria, the raw materials used are different, the raw materials for photosynthesis are carbon dioxide and water, while the raw materials for respiration are oxygen and sugar, photosynthesis can only be carried out in the presence of light, and it can only be carried out in cells with chloroplasts or pigments, while respiration is carried out in living cells. And the purpose of the generated ATP is not the same.

In the same way, both are capable of generating ATP, which requires the involvement of enzymes.

1. The nature is different.

Photosynthesis is usually the process by which green plants (including algae) absorb light energy and synthesize carbon dioxide and water into energetic organic matter while releasing oxygen. Respiration, on the other hand, refers to the process by which the body degrades molecules of organic nutrients from the environment or stored by cells themselves into smaller, simple end products through step-by-step reactions.

2. The place of occurrence is different.

Photosynthesis in plants occurs in chloroplasts in plant cells, whereas respiration in plants occurs in mitochondria, ribosomes, and cytoplasm in plant cells.

3. The products are different.

The products of plant photosynthesis are organic matter such as sugars and water, which converts light energy into stable chemical energy; Whereas, the respiration products of plants are carbon dioxide, water, and a lot of energy, which converts stable chemical energy into active chemical energy.

Extended Materials. The significance of photosynthesis in plants.

1. Turn solar energy into chemical energy.

While assimilating inorganic carbides, plants convert solar energy into chemical energy, which is stored in the organic compounds formed. The solar energy assimilated by photosynthesis is about 10 times the amount of energy required by humans every year. The chemical energy stored in organic matter, in addition to the use of the plant itself and all heterotrophs, is more important for the energy of human nutrition and activity**.

Hence it can be said that photosynthesis provides the main energy source today. Greenery is a giant energy conversion station.

2. Turn inorganic matter into organic matter.

The scale on which plants produce organic matter through photosynthesis is enormous. It is estimated that plants can absorb about the amount of CO2 per year and synthesize about the amount of organic matter. 40% of the carbon assimilated by autotrophic plants on Earth is assimilated by phytoplankton, and the remaining 60% is assimilated by terrestrial plants.

The food, oil, fiber, wood, sugar, fruits, etc., all needed by human beings come from photosynthesis, and without photosynthesis, human beings will have no food and various daily necessities. In other words, there can be no human survival and development without photosynthesis.

3. Maintain the carbon-oxygen balance of the atmosphere.

The reason why the atmosphere can maintain 21% oxygen content on a regular basis is mainly dependent on photosynthesis (about the amount of oxygen released during photosynthesis). On the one hand, photosynthesis provides the conditions for aerobic respiration, and on the other hand, the accumulation gradually forms the ozone (O3) layer of the atmospheric surface. The ozone layer absorbs the intense ultraviolet radiation from sunlight that is harmful to living organisms.

Although photosynthesis in plants removes a large amount of CO2 from the atmosphere, the concentration of CO2 in the atmosphere is still increasing, mainly due to urbanization and industrialization.