histology

The organism to be identified has a nucleus surrounded by a nuclear membrane. Genetic material is concentrated predominantly in the chromosomes that consist of DNA strands and protein molecules. These cells divide mitotically. Identify these organisms:

The action of microbial toxins on the cells caused significant damage of the glycocalyx. What function of the cell membrane will be significantly disordered?

An electron micrograph shows a cell-to-cell adhesion consisting, in each cell, of an attachment plaque. The intercellular space is filled with electron-dense substance including transmembrane fibrous structures. Specify this adhesion:

The harmful factors caused the acute disorder of the endocytosis and exocytosis in the liver and blood cells. What layer of the cell membrane was first injured?

A large number of cisterns flattened in the center and extended on the periphery and small vesicles with secretory granules were found in the biopsy hepatocytes during the electron microscopic study of the biliary pole. Name this organelle:

The vesicles with peroxide oxidation enzymes - catalase, peroxidase (0,05-1,5 microns in diameter) were revealed in the cytoplasm of hepatocytes during the histochemical investigation. What are these organelles?

An organelle that participates in glucosylation of proteins and lipids with the formation of glycosaminoglycans was detected in the histological preparation of the spinal ganglion in the pseudounipolar neurons after impregnation with silver salts. Name this organelle.

The researchers destroyed the structure of one of the cell parts during a scientific experiment. As a result the cell lost the ability to division. What structure was broken?

Ultramicroscopic examination of «dark» hepatocytes population in the cell cytoplasm detected a developed granular endoplasmic reticulum. What function has this organelle in these cells?

The patient was hospitalized in the hospital with poisoning. It was established that the detoxification processes were disordered in the liver. Which organelles of hepatocytes were injured?

The microtubules contain the protein:

The organelle that is the big polyprotease complex and consists of tubular and two regulatory parts that are located at both ends of organelle was representing on electronic photo. The function of this organelle is proteolysis. Name this organelle.

Significant reduction of the protein synthesis in hepatocytes resulted by the long-term effects of the toxic substances on the body. What organelles are most affected by intoxication?

Labeled aminoacids, alanine and tryptophane were introduced to a mouse in order to study localization of protein biosynthesis in its cells. Around what organelles will the accumulation of labeled amino acids be observed?

The secretory granules appear and disappear in the cytoplasm of the pancreatic cells during the secretory cycle. Which structural elements can these granules be related to?

At what component of the cell the lysosomes formation takes place?

A high content of hydrolytic enzymes in the cytoplasm was founded during the examination. Which organelle activity shows this fact?

In the tissue culture the nucleoluses were damaged by the radioactive irradiation. Recovery of what organelles in the cytoplasm becomes problematic?

The abnormal biopolymers were found in the body cells of the child (7 years) with congenital "storage diseases". Name this organelle.

The cell of the laboratory animal was overdosed with Roentgen rays. As a result albuminous fragments formed in the cytoplasm. What cell organelle will take part at their utilization?

The hysterectomy was made to a 67-year-old woman because of a tumor. At the histological investigation of this tumor the multipolar mitoses were found at the tumor cells (chromosome migration to more than two cellular poles). Which organelles disorder can this multipolar mitosis cause?

Low level of albumins and fibrinogen was detected in the patient's blood. Decreased activity of what organelle of the liver hepatocytes can cause it?

The cell was treated by a substance, which blocks the nucleotide phosphorylation process in the mitochondria. What process will be broken?

The organelles, which consist of cisterns that flattened in the center and extended on the periphery and small vesicles, were found at the electron microphotography of the nervous cells. What are these organelles?

The structure of the ribosome was disordered in the cell. What process is primarily affected?