Do plant cells have mitochondria? Thank you, teacher!

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Mitochondria is a structure that is shared in both animals and plants and acts as energy converters in both animals and plants. It decomposes organic matter into energy and supplies cells for life activities. Mitochondria are the "must-haves" for respiration in the plant body.

Plants use mitochondria to break down organic matter that stores energy into carbon dioxide and water, and at the same time release energy for organisms to carry out life activities. Mitochondria are the main sites of aerobic respiration and are the power factories that provide power. Mitochondria are generally granular or rod-shaped, but vary depending on the species and physiological state of the organism, and can be ring-shaped, dumbbell-shaped, thread-shaped, branch-shaped, or other shapes.

The main chemical components are proteins and lipids.

Some. With the exception of Entamoeba histolytica, Giardia basketii, and several microsporidia, most eukaryotic cells.

More or less possess mitochondria.

However, the mitochondria they possess vary in size, number, and appearance.

Plant cells have mitochondria.

Mitochondria are a type of organelle that is coated by two layers of membranes that are present in most cells.

It is the structure in the cell that produces energy, and it is the main place for the cell to carry out aerobic respiration, and it is called the "power house". Its diameter is around microns.

Mitochondria possess their own genetic material and genetic system, but their genome size is limited and is a semi-autonomous organelle. In addition to powering cells, mitochondria are involved in things like cell differentiation, cell messaging, and apoptosis.

and has the ability to regulate cell growth and cell cycle.

capacity. Mitochondria can be divided into four functional regions: outer mitochondrial membrane (OMM), mitochondrial membrane interspace, inner mitochondrial membrane (IMM) and mitochondrial matrix. The membranes on the outer side of the mitochondria are parallel to each other and are typical unit membranes.

Among them, the outer mitochondrial membrane is smoother and plays the role of organelle boundary membrane; The inner mitochondrial membrane folds inward to form a mitochondrial crest, which bears more biochemical reactions. These two membranes divide the mitochondria into two compartments, and between the two layers of mitochondrial membranes is the mitochondrial membrane space, which is surrounded by the mitochondrial matrix.

composition

The chemical components of mitochondria mainly include water, proteins, and lipids.

In addition, it also contains a small amount of small molecules such as coenzymes and nucleic acids. Protein makes up 65%-70% of mitochondrial dry weight.

Proteins in mitochondria are both soluble and insoluble. Soluble proteins are mainly enzymes located in the mitochondrial matrix and peripheral proteins of membranes; Insoluble proteins make up the body of the membrane, some of which are mosaic proteins, and some are enzymes. Lipids in mitochondria.

It is mainly distributed in two layers of membrane, accounting for 20%-30% of the dry weight.

More than 3 4 of the total lipids. The amount of phospholipids in the mitochondrial membrane of different tissues of the same species is relatively stable. Rich in cardiolipin and low in cholesterol.

It is the obvious difference in the composition of mitochondria from the rest of the membrane structure of the cell.

Plant cells have mitochondria.

The root cells of plants do not have chloroplasts.

Because the roots are buried in the ground and cannot receive light, chloroplasts cannot play a role, and are converted into mitochondria, mitochondria and ribosomes.

Yes, there must be, mitochondria provide energy to cells, and ribosomes synthesize proteins.

The plant cell is the basic unit of structure and function of plant life activities, consisting of protoplasts and cell walls.

It consists of two parts. Protoplasts are a general term for everything in the cell wall, mainly composed of the cytoplasm and nucleus.

composition, there are also several different fine erector organelles in the cytoplasm or nucleus.

In addition, there are cell fluids and post-inclusions, etc.

Plant cells are generally small, and in higher plants, they are usually 10-100 m in diameter. Plant cells come in a variety of morphologies, with the common ones being round, oval, polyhedral, cylindrical, and spindle-shaped. They are made up of protoplasts and cell walls.

Mitochondria in plant cells are the main site of aerobic respiration, and can provide respiration for various life activities of plant bodies.

More than 95% of the energy released in the organism comes from ATP produced by aerobic respiration.

The root cells of plants do not have chloroplasts, because the roots are buried in the ground at the regular stage, cannot receive light, chloroplasts can not play a role, and are converted into mitochondria, mitochondria and ribosomes must be there, mitochondria provide energy for the cell, and ribosomes synthesize proteins.

No, for example, sieve cells, duct cells, they just play the role of transport, but they are actually dead cells.

This is true in the high school range, all plant cells have mitochondria.

Mitochondria function as energy converters in the plant body. It decomposes organic matter into energy and supplies cells for life activities.

The sieve tube cells mentioned upstairs have mitochondria, and mature sieve cells do not have a nucleus, vacuolar membrane, microfilaments, microtubules, Golgi apparatus, and ribosomes, but have plasma membranes, mitochondria, plastisomes, and smooth endoplasmic reticulum.

It is true that the catheter is dead cell, but it is not required for high school exams.

The root cells of plants do not have chloroplasts.

This is because the roots are buried in the ground during the perennial period.

Unable to receive light Chloroplasts do not function.

Converted into mitochondria.

There are no chloroplasts.

The apical meristem cells do not have large vacuoles.

Because the cells are still developing, the organelles are not fully developed, and the vacuoles are not yet formed.

So there is no **large vacuole.

In fact, the growing cells of plants do not have large vacuoles.

But apical meristem cells are the most obvious.

From the following four aspects, I hope it can help you to do Dan!

1. Chloroplasts are the site of photosynthesis. Under light light, plants convert inorganic matter (CO2 and water) into organic matter through chloroplasts, while fixing light energy into stable chemical energy. Intermediate stage aside) does not produce energy that plants can directly use.

2. Mitochondria are the main sites of aerobic respiration. Through mitochondria, the cell completely divides the organic matter in the cell into Husen-free organic matter (CO2, water, etc.), and at the same time converts the stable chemical energy in the organic matter into active chemical energy (in the form of ATP), which can be directly used by cell life activities.

3. From the perspective of energy, biology is an energy dissipation system. The display of life phenomena and life activities (including growth, development, etc.) can only be realized on the premise of consuming energy.

4. Not all plant cells have leaves to disturb the green body. Chloroplasts are only found in those green parts that can photosynthesize. Most of the cells in plants do not have chloroplasts.

Mitochondria are the primary sites of aerobic respiration. At the same time, it can provide energy released by respiration for various life activities of the plant body.

It can be said that more than 95% of the energy in living organisms comes from ATP produced by aerobic respiration.

Secondly, there is also a small amount of DNA in the mitochondria, which can also be transcribed and translated, so it is called a semi-autonomous organelle.

In the life activities of animals, more carbohydrates need to be consumed to provide energy for limb movements, nerves and brain activities, while plants do not need to do this, and mitochondria are organelles in cells that are responsible for breaking down sugars to provide energy, so the number of mitochondria in animal cells is more.

The chloroplasts of plants don't actually produce energy, chloroplasts are just places where sugars are made.

Therefore, the presence of chloroplasts in plants is not the reason for their lack of mitochondria, the presence of chloroplasts in plants can only cause them to "eat less".

It doesn't seem to be any different. At least functionally and morphologically there is no difference. It's just that, on average, there are fewer mitochondria in plant cells and more in animal cells.

But there are some differences in the DNA in the mitochondria of animals and plants. Generally speaking, the mitochondrial DNA in animal cells is relatively short, there are almost no introns, and the genes are often duplicated. Plant cells have longer mitochondrial DNA, more introns, and fewer gene duplications.

= Not all plant cells have chloroplasts, only mature mesophyll cells will have chloroplasts.

Chloroplasts can photosynthesize under light, produce small amounts of ATP, and synthesize organic matter, i.e., convert light energy into stable chemical energy. It is the process of sequestering carbon that allows plants to grow.

Chloroplast photosynthesis produces very little ATP and is mostly used in dark reactions, so mitochondria need to produce ATP to support their life activities.

Therefore, it can only be said that some cells of plants have both chloroplasts and mitochondria.