Tell me, what is your definition of chlorophyll?

To put it simply, chlorophyll is a pigment that can photosynthesize, and it plays the main role in the leaves, making them green.

On the surface, chlorophyll is something that can carry out photosynthesis, and in the autumn chlorophyll will gradually become very weak, because at that time lutein comes out to work.

Chlorophyll has a role in every leaf because it is something that can photosynthesize and keep the leaf alive.

Chlorophyll in living leaves can allow the leaves to photosynthesize without photodecomposition, so it is good to make the leaves always fresh and green.

If our life is compared to a leaf, then chlorophyll is a part of our youth, at that time we can squander unscrupulously, but in middle age, chlorophyll will lose its effect.

I think it's the one that adds color to our lives, and we can see that the leaves are green, so chlorophyll plays a very important role.

Fundamentally, I think chlorophyll can provide a certain quality assurance problem for people's lives, and without the support of chlorophyll, then the leaves will not oxidize, and our earth will not have oxygen.

Chlorophyll plays a protective role in our lives, and if we lose it, maybe we don't have any meaning and can't see green things.

In short, it is very useful, chlorophyll plays a very important role in human life, but we are actually very easy to ignore it, because we don't know its origin very well.

Chlorophyll is not very stable, and light, acids, alkalis, oxygen, oxidants, etc., will decompose it. Under acidic conditions, the chlorophyll molecule easily loses the magnesium in the porphyrin ring and becomes demagnesium chlorophyll.

Chlorophyll, the main pigment for photosynthesis in plants, is a family of lipid-containing pigments located in the thylakoid membrane. Chlorophyll absorbs most of the red and violet light but reflects green light, so chlorophyll is green, and it plays a central role in the light absorption of photosynthesis. Chlorophyll is a magnesium porphyrin compound, including chlorophyll a, b, c, d, f, prochlorophyll and bacterial chlorophyll.

There are two main types of chlorophyll in chloroplasts of higher plants: chlorophyll a and chlorophyll b. They are insoluble in water while soluble in organic solvents such as ethanol, acetone, ether, chloroform, etc. Chlorophyll a molecular formula:

c55h72o5n4mg；Chlorophyll b molecular formula: C55H70O6N4MG In color, chlorophyll a is blue-green, while chlorophyll b is yellowish-green.

Photosynthesis refers to the process in which green plants convert light energy into chemical energy with carbon dioxide and water through chloroplasts, store it in organic matter, and release oxygen. The first step in photosynthesis is the absorption of light energy by chlorophyll and ionization of chlorophyll. The chemical energy produced is temporarily stored in adenosine triphosphate (ATP) and eventually converts carbon dioxide and water into carbohydrates and oxygen.

The various colors of pigmented vegetables are made up of pigments. Chlorophyll is the pigment that forms green, and it is produced in response to sunlight. Spinach and rape contain more chlorophyll.

Chlorophyll is an unstable substance that is insoluble in water and soluble in alcohol. Chlorophyll is easily destroyed by acids and turns dark green or yellow-green. Vegetables such as carrots, tomatoes, and red peppers have yellow, red, and orange pigments.

The reason why other green vegetables also contain yellow, red, orange and other colors is that these vegetables are rich in carotene, lycin and lutein.

The various colors of pigmented vegetables are made up of pigments. Chlorophyll is the pigment that forms green, and it is produced in response to sunlight. Spinach and rape contain more chlorophyll.

Chlorophyll is an unstable substance that is insoluble in water and soluble in alcohol. Chlorophyll is easily destroyed by acids and turns dark green or yellow-green. Carrots, tomatoes, red peppers and other vegetable branches imitate the stuffiness of the medium, with yellow, red, orange and other pigments.

Other green vegetables also contain yellow, red, orange and other colors because these vegetables are rich in carotene, lycopenin and lutein.

What are the characteristics of chlorophyll? In fact, she generally photosynthesizes plants in chloroplasts.

The green color of vegetables is made up of chlorophyll. Chlorophyll is unstable in nature, insoluble in Shuifanqing, soluble in ethanol, ether and other organic solvents. Chlorophyll is not easily destroyed in alkaline environments, but it is easily destroyed in acidic conditions.

Chlorophyll is not heat- or light-tolerant. When green vegetables are blanched in boiling water for a short time, the green color deepens, because the air in the cell wall is removed, making the cells more transparent.

However, when left in boiling water for a long time, it will turn brownish-green, because the hydrogen in the water replaces the magnesium in the chlorophyll. The magnesium in chlorophyll can also be replaced by divalent ions such as copper and zinc, and the color of chlorophyll after substitution is more stable. This method is often used in vegetable processing to protect the green.

The vast majority of plants have chlorophyll, but some plants do not have chlorophyll. For example, some saprophytic and parasitic plants do not have chlorophyll and do not photosynthesize. For example, dodder seeds, saprophytic plants gastrodia, etc.

Generally, only the green parts of green plants have chlorophyll, and the non-green parts do not have chlorophyll. Others, such as roots buried in the soil and silver-edged geraniums, have no chlorophyll. So the answer is:

There is a plant called Cuscuta that does not have chlorophyll.

People will get darker, I am allergic to the sun, and I just can't eat chlorophyll-rich dishes.

Chlorophyll can only transfer electrons Chlorophyll does not contain iron and has nothing to do with hematopoiesis People do not need chlorophyll, chlorophyll has no VC, only mg, and the pH of the human body has nothing to do with chlorophyll Chlorophyll has no role in the manufacture of enzymes and the maintenance of their activity Chlorophyll is unstable, and in the process of processing and storage, chlorophyll is often affected by light and oxygen, and is photolyzed into a series of small molecule substances and faded. The photolysate products are lactic acid, citric acid, succinic acid, maleic acid and a small amount of alanine When the pH value of the system drops to 4, the speed of chlorophyll magnesium demagnesium reaction is more obvious, and with the increase of acidity, the more destructive, and the pH of human gastric acid is about chlorophyll has no nutritional value to people, and there are no clinical experiments to prove its efficacy Distinguish between right and wrong, and combat pseudoscience.

The description of chlorophyll is correct except for the big oak?

a.Chlorophyll is a porphyrin derivative containing mg++.

b.Chlorophyll is insoluble in water and soluble in organic solvents.

c.Chlorophyll is present free in the somatic cells of plants.

d.There is a conjugated system formed by alternating single and double bonds in the chlorophyll molecule.

e.The chlorophyll molecule is a terpenoid compound cover.

Correct answer: c