What structures in the paramecium are involved in ingesting and digesting food

Oral groove: feeding.

Telescopic bubble and collection tube: Collects metabolic waste and excess water and excretes it from the body.

Anus: Expels food debris.

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Expansion bubble - drains water waste, anus - discharges food debris, gutter - ingests food,

Food vacuoles – digestion and absorption, cilia – perform locomotion, large nuclei vs small nuclei – are involved in reproductive genetics.

The food vacuole of paramecium is produced by the endocytosis of paramecium, and upon entering the cell, it will fuse with primary lysosomes to form secondary lysosomes. Paramecium feeds on bacteria or other protozoa.

Expansion and contraction of the mouth groove food bubble anus.

Paramecium are single-celled protozoa that live in freshwater. There is a structure on the body called the mouth groove, and food can enter the cells with water from the mouth groove to complete the process of feeding.

Paramecium is a small, cylindrical protozoan that is made up of only one cell and is a single-celled protozoa. Hermaphrodites, the most common being the tail paramecium, with a body length of only 180-280 microns, it and the amoeba have the shortest lifespan, measured in hours, and the lifespan is about one day and night. It is called paramecium because its body shape looks like an upside-down straw sole from a flat perspective.

Paramecium is a single-celled protozoa, and the external food is concave inward through the cell membrane to form food vacuoles, that is, it is ingested by endocytosis and then digested intracellularly.

Paramecium caudatum (paramecium) feeds mainly on bacteria, but there are also other small organisms such as flagellates, yeast, and organic detritus. It has been observed that a paramecium can ingest more than 1,500 bacteria in an hour, which shows the astonishing speed. After being ingested by paramecium, how is it digested and converted into energy for metabolism and nutrients for growth and reproduction?

Over the years, researchers have made detailed observations on the feeding and digestion processes of paramecium, and further conducted ultrastructural and biochemical studies on lysosomes and food vacuoles related to the digestion process, and have some preliminary understanding of this problem.

The number of food vacuoles in the cytoplasm of the paramecium and this gutter is quickly associated with ingestion of food and digestion of food.

Oral groove: Relies on the oscillation of cilia to ingest food and enter cells to form food vacuoles.

Food vacuoles: In the cytoplasm, the flow of cytoplasm gradually decreases, nutrients are absorbed, and food residues are excreted by the cell lob.

Hello, paramecium is a single-celled organism, ingesting food, entering the body from the mouth groove, forming food vacuoles in the cytoplasm, being digested into the required nutrients in the nucleus (macronucleus), and then excreting excess food residues from the cell tank, telescopic bubbles and collection tubes can collect metabolic wastes and excess water, and excrete from the body.

Food vacuoles and grooves in the cytoplasm of paramecium are involved in food ingestion and digestion of food.

Oral groove: Relies on the oscillation of cilia to ingest food and enter cells to form food vacuoles.

Food vacuoles: In the cytoplasm, as the flow of cytoplasm gradually decreases, nutrients are absorbed, and food debris is excreted from the anus.

The paramecium's food enters the body from the mouth groove, forming a food vacuole. Food vacuoles flow with the cytoplasm and the food in them is gradually digested by enzymes. Finally, food residues, which cannot be digested, are excreted from the anus.

It can be seen that the structure and function of each part of paramecium are as follows:

Oral groove: feeding.

Food bubbles: Digest food.

Epimembrane: respiration (absorption of oxygen in water, excretion of carbon dioxide) macronucleus: nutrient metabolism.

Small nucleus: reproduction.

Expansion bubble and collection tube: collects metabolic waste and excess water, and excretes the extracorporeal anus: excretes food debris.

Cilia: Movement.

So the answer is: food bubbles; anus;

Answer C test point: This question mainly examines the structure of paramecium and the living of the shirt, test analysis: paramecium is a single-celled animal, from this cell can complete various life and wisdom activities, paramecium relies on the expansion bubble to discharge excess water in the body to the outside of the body, with the surface membrane for respiration, food bubble is used for the digestion and absorption of nutrients, food from the mouth groove into the body.

Comments: This question is a basic question, which can be combined with the graphics of paramecium to help understand and master.