Which category of protozoism do yeasts belong to Plants Algae Fungi Unicellular organisms

It's a fungus! It has a nucleus.

Fungi are single-celled organisms.

fungi and eukaryotic cells.

Hope it helps.

Fossils are the relics of ancient creatures buried in the strata. The most common fossils are formed from teeth and bones. After the death of ancient animals, the internal organs, muscles and other soft tissues of the corpse will quickly decay, and the teeth and bones can be preserved for a longer time because there is less organic matter and more inorganic matter.

If the body happens to be buried in sediment, cut off from the air, the process of decay slows down. There is slow-flowing groundwater in the sediment voids. On the one hand, the water dissolves the minerals in the rock and sediment, and on the other hand, the excess minerals in the water precipitate or become crystals, which gradually seep into the bones buried in the sediment and fill the space left by the decay of the organic matter of the teeth and bones.

If the conditions are right, the minerals that seep into the bones from the outside can effectively replace the original organic matter of the bones before they decay and disintegrate, and the teeth and bones are preserved as fossils. Because a large number of minerals in fossils are slowly replaced by extremely careful organic matter, the original shape of teeth and bones can be preserved intact, and even the shape of tissues that can be seen by electron microscopy can be preserved as they are. Over time, the weight of the bones increases, and the original teeth and bones become stones that still preserve the original shape and internal structure of the teeth and bones, a process called "petrification".

In addition to teeth and bones, the feces of some animals can also be fossilized. For example, some carnivores eat meat with broken bones, and there are many undigested broken bones in the feces, which are not easy to decay, so they can become fossils. Footprints can also become fossils.

People or animals step on the mud and sand, causing footprints. When the sediment dried, the footprints were filled with other substances. Both substances are preserved by the petrification of minerals that later seep in, but the properties of the two substances are different, the hardness is different, and the degree of weathering or destruction is also different.

When one substance is weathered or destroyed, the other appears as fossilized footprints.

Yeasts are single-celled fungi. Fungi are all eukaryotic organisms.

It is a fungus, facultative anaerobic.

Saccharomyces cerevisiae belongs to () microorganisms.

a.Aerobic buried reed type.

b.Anaerobic.

c.Facultative anaerobic.

d.Slightly anaerobic.

The answer is true: c

Yeast is a general term for a group of single-celled fungi that can ferment sugars. Yeast is a single-celled microorganism that belongs to the fungal class of higher microorganisms.

Like the cells of higher plants, it has the same enzymes and metabolic pathways as the nucleus, cell membrane, cell wall, mitochondria, and narryuzheng. Yeast is harmless and easy to grow holes, and yeast exists in the air, soil, water, and animals. Survive with or without oxygen.

Yeast is a facultative anaerobic organism, and no obligate anaerobic yeast has been found, and in the absence of oxygen, fermented yeast oblivions obtain energy by converting sugars into carbon dioxide and ethanol (alcohol). Yeast does not have chlorophyll in its body, cannot carry out photosynthesis, and does not belong to plants.

1. Yeast is a common single-celled fungus, which carries out aerobic respiration under aerobic conditions, buds and reproduction, and anaerobic respiration under anaerobic conditions to produce carbon dioxide and water, and the individual forms are globical, oval, oval, columnar and sausage-shaped, etc., and the reproductive mode of yeast is divided into two categories: asexual reproduction and sexual reproduction.

2. Yeast is a single-celled microorganism. It belongs to the fungal class of higher microorganisms. There is a nucleus, a membrane of Ranami, a cell wall, mitochondria, the same enzymes and metabolic pathways.

Yeast is harmless and easy to grow, and yeast is present in the air, in soil, in water, and in animals. Survive with or without oxygen.

3. Yeast is a facultative anaerobic organism, no obligate anaerobic yeast has been found, and when there is a lack of oxygen, fermented yeast obtains energy by converting sugars into carbon dioxide and ethanol (commonly known as alcohol).

4. Most yeasts can be isolated in sugar-rich environments, such as fruits (grapes, apples, peaches, etc.) or plant secretions (such as cactus juice). Some yeasts live inside insects. Yeasts are single-celled eukaryotic microorganisms that are usually spherical, oval, sausage-shaped, oval-shaped, lemon-shaped, or joint-shaped, and are much larger than the single-celled individuals of bacteria, generally 1 5 or 5 20 microns.

Yeasts are flagellated and cannot swim. Yeast has a typical eukaryotic cell structure, with cell wall, fine sensitive membrane, nucleus, cytoplasm, vacuole, mitochondria, etc., and some also have microsomes.

Bacteria, fungi and plant cells all have cell walls, but the components are different, the first two are mainly composed of peptidoglycan, and the latter are pectin and cellulose. Yeasts belong to fungi and have cell walls.

Vacuoles are mainly found in mature plant cells. In addition, some lower protozoa (e.g., the telescopic vesicles of paramecium) have a form equivalent to vacuoles; Certain fungal yeasts also have vacuoles. However, not all fungi have vacuoles, and not all plant cells have vacuoles (e.g., cells in the apical meristem do not have vacuoles), which should be analyzed on a case-by-case basis.

The following is an excerpt from a university textbook.

Protists have no special evolutionary or taxonomic meaning, and are not strictly a natural group, but are grouped together for convenience. The only common thing is unicellular.

Yeasts have a nucleus with a nuclear membrane and belong to eukaryotes. This is the biggest difference between eukaryotic cells and prokaryotic cells.

The difference is with the presence or absence of a nuclear membrane.

Bacteria are prokaryotic unicellular, but fungi are not necessarily. Fungi include prokaryotes (e.g., basidiomycetes), eukaryotes (e.g., yeasts), unicellular (e.g., yeasts), and multicellular (e.g., molds, basidiomycetes).

1 It is only an empirical general statement that fungi are multicellular organisms, and these classifications do not exist in nature, but are thought to be defined. Therefore, no one criterion can be used as a criterion for classification. Moreover, multicellular is not a criterion for fungi.

So, there is no contradiction that yeast is a fungus and a single-celled organism.

2 Streptomyces is a plant of actinomycetes in bacteria, which belongs to prokaryotes, not eukaryotes. You can refer to the Berger's manual.

Who said that fungi are multicellular organisms, there are unicellular ones.

Mold is a fungus, so it is a eukaryotic organism.

Slowly you'll understand, hehe.