Question

Строение питание и размножение амёбы​

Answer 1

Ответ:

клеточная мембрана,цитоплазма,ядро'псевдоподии'сократитительная вакуоль,травна вакуоль .Питание фагоцитоз,размножение деление пополам

Answer 2

Structure of Amoeba

Amoebas are single-celled organisms belonging to the phylum Amoebozoa. They have a simple and flexible structure that allows them to move and capture food. The structure of an amoeba includes the following components:

1. Cell Membrane: The outermost layer of the amoeba is the cell membrane, which acts as a protective barrier and regulates the movement of substances in and out of the cell.

2. Cytoplasm: The cytoplasm is a gel-like substance that fills the interior of the cell. It contains various organelles and structures necessary for the cell's functions.

3. Nucleus: Amoebas have a single nucleus that contains the genetic material (DNA) of the cell. The nucleus controls the cell's activities and is involved in reproduction.

4. Pseudopodia: Amoebas are known for their ability to form pseudopodia, which are temporary extensions of the cell membrane. Pseudopodia allow the amoeba to move and capture food by engulfing it.

5. Food Vacuoles: When an amoeba captures food, it forms a food vacuole by engulfing the food particle. The food vacuole then fuses with lysosomes, which contain digestive enzymes, to break down the food for nutrients.

6. Contractile Vacuole: Amoebas live in freshwater environments, and to maintain osmotic balance, they have a contractile vacuole. The contractile vacuole collects excess water from the cytoplasm and expels it out of the cell.

Nutrition of Amoeba

Amoebas are heterotrophic organisms, meaning they obtain their nutrition by consuming other organisms or organic matter. The process of nutrition in amoebas involves the following steps:

1. Feeding: Amoebas capture food by extending their pseudopodia around the food particle. Once the food is engulfed, it forms a food vacuole within the cell.

2. Digestion: Inside the food vacuole, the amoeba releases digestive enzymes from its lysosomes. These enzymes break down the food into smaller molecules that can be absorbed by the cell.

3. Absorption: The digested nutrients are absorbed through the cell membrane and transported into the cytoplasm. The nutrients are then used for energy production and other cellular processes.

4. Excretion: Waste materials resulting from digestion are eliminated from the cell through exocytosis or through the contractile vacuole, which expels excess water and waste products.

Reproduction of Amoeba

Amoebas reproduce through a process called binary fission, which is a form of asexual reproduction. The steps involved in the reproduction of amoebas are as follows:

1. Nuclear Division: The nucleus of the amoeba undergoes division, forming two identical nuclei.

2. Cytoplasmic Division: The cytoplasm of the amoeba also divides, resulting in the formation of two daughter cells.

3. Cytokinesis: The cell membrane pinches inward, separating the two daughter cells. Each daughter cell receives one nucleus and a portion of the cytoplasm.

Binary fission allows amoebas to reproduce rapidly and increase their population. Under favorable conditions, amoebas can reproduce frequently, leading to the formation of colonies or clusters of amoebas.

It's important to note that the information provided above is based on general knowledge about amoebas. For more specific and detailed information, it is recommended to refer to scientific literature or biology textbooks.