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Features of the structure of an animal cell On the surface of many animal cells, for example, various epithelia, there are very small thin outgrowths of the cytoplasm, covered with a plasma membrane - microvilli. The largest number of microvilli is found on the surface of intestinal cells. Animal cage

Features of the structure of the animal cell The cell wall has a complex structure. It consists of an outer layer and a plasma membrane. Cells of animals and plants differ in the structure of their outer layer. The outer layer of the surface of animal cells is very thin and elastic. Consists of a variety of polysaccharides and proteins. The surface layer of animal cells is called glycocalyx. The structure of the shell of an animal cell

Features of the structure of an animal cell Each cell is separated from the environment by a plasma membrane, 7-10 nanometers thick. But unlike plant cells, animal cells do not have a protective layer - a cellulose cell wall, which is released by the outer surface of the plant cell membrane. The structure of the membrane of an animal cell 1. Plasma membrane

Features of the structure of an animal cell 1. Cell center In animal cells near the nucleus there is an organoid called the cell center. The main part of the cell center is made up of two small bodies - centrioles, located in a small area of \u200b\u200bdense cytoplasm. Centrioli Cell Center

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Completed by the teacher of biology MBOU "SOSH" pst. Chinyavoryk S.S. Kuzmina

General information 1 The bodies of all living organisms are composed of cells. Most animals have many cells in their bodies.

General information 2 There are organisms whose body consists of only one cell - these are bacteria, unicellular algae, fungi, protozoa.

General information 3 The science of CYTOLOGY deals with the study of the structure, development and activity of cells.

Background 4 Most animal cells are very small. Animal cell shapes are very different. Muscle cells Blood cells Skin cells The shape and size of animal cells depend on the function of the cell

cytoplasm mitochondria ribosome chromosomes Endoplasmic reticulum Golgi apparatus nucleolus Cell membrane lysosome centriole nucleus Digestive vacuole Diagram of the structure of an animal cell

ORGANOIDS STRUCTURE FUNCTIONS Endoplasmic reticulum Ribosomes Mitochondria Golgi apparatus Lysosomes §6, page 26

Plant cell Animal cell Difference Similarity §6, page 26 Homework

Tissue is a group of cells similar in structure and function and an intercellular substance secreted by these cells.

Epithelial (integumentary) tissue Connective tissue Muscle tissue Nervous tissue Tissue

Epithelial tissue They form the integuments of animals, line the cavities of the body and internal organs; They consist of one or more layers of tightly adjacent cells and contain almost no intercellular substance;

Connective tissue Consists of a small number of cells scattered in the mass of intercellular substance; It is a part of the skeleton, supports the body, creates support, protects the internal organs.

Muscle tissue Consists of elongated cells that receive irritation from the nervous system and respond to it with irritation; Thanks to the contraction and relaxation of skeletal muscles, the animals move.

Nervous tissue Forms the nervous system, which consists of nerve cells - neurons; The neurons are stellate, with long and short processes. Neurons perceive irritation and transmit arousal to muscles, skin, other tissues and organs.

Tissue Function Tissue Types Epithelial Connective Muscular Nervous ----------

Homework §6-7, on pages 26-29, preparing for the test on the topics "Cell" and "Tissue"

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Slide 1

The cell membrane is located under the cell wall. Functions: limits the contents of the cell; protects the cage; regulates the exchange of substances with the external environment.

Cytoplasm is a viscous fluid that fills the cell; neighboring cells are connected to each other through the cytoplasm. Functions: accumulation of cellular waste products; storing nutrients.

The nucleus contains chromosomes; covered with a shell. Functions: participates in the storage and transmission of hereditary information to offspring; regulates all processes in the cell.

The nucleolus is the accumulation of nuclear matter in the nucleus. Functions: participates in the formation of ribosomes.

Ribosomes are round and small in size; located in the cytoplasm freely or attached to the endoplasmic reticulum. Functions: formation (synthesis) of proteins.

The endoplasmic reticulum (EPS) consists of tubules that form a reticulum; has its own shell. Functions: formation of organic substances (proteins, fats and carbohydrates); transport of substances in the cell.

The Golgi apparatus consists of tubules, cavities and vesicles; covered with its own shell. Functions: formation of complex organic substances; the formation of lysosomes.

Lysosomes are small bubbles; contains enzymes; have their own shell. Functions: breakdown of organic substances (proteins, fats, carbohydrates).

Mitochondria are oval in shape; covered with a double shell; the inner shell forms folds. Functions: formation and accumulation of energy ("power stations" of the cell).

The cell center consists of two cylindrical parts Functions: participation in cell division

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The structure of the animal cell

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Slide 1

The structure of the animal cell

Cell membrane. located under the cell wall.

• limits the contents of the cell;
• protects the cage;
• regulates the exchange of substances with the external environment.

Cytoplasm is a viscous fluid that fills the cell; neighboring cells are connected to each other through the cytoplasm.

• accumulation of waste products of the cell;
• storing nutrients.

Core. contains chromosomes; covered with a shell.

• participates in the storage and transmission of hereditary information to offspring;
• regulates all processes in the cell.

The nucleolus is the accumulation of nuclear matter in the nucleus.

Functions: participates in the formation of ribosomes.

Ribosomes are round and small in size; located in the cytoplasm freely or attached to the endoplasmic reticulum.

Functions: formation (synthesis) of proteins.

The endoplasmic reticulum (EPS) consists of tubules that form a reticulum; has its own shell.

• the formation of organic substances (proteins, fats and carbohydrates);
• transport of substances in the cell.

The Golgi apparatus consists of tubules, cavities and vesicles; covered with its own shell.

• the formation of complex organic substances;
• the formation of lysosomes.

Lysosomes are small bubbles; contains enzymes; have their own shell.

Functions: breakdown of organic substances (proteins, fats, carbohydrates).

Mitochondria are oval in shape; covered with a double shell; the inner shell forms folds.

Functions: formation and accumulation of energy ("power stations" of the cell).

The cell center consists of two cylindrical parts

Functions: participation in cell division