What is the cell membrane? In prokaryotic and eukaryotic cells, the cell membrane describes the envelope of the cell plasma. Thus, the cell membrane protects the cell from external influences. The basic structure of the cell membrane is the same for all cells. The basic structure is a double fat layer (lipid bilayer). This consists … What is the cell membrane? | Cell plasma in the human body
Definition Cell plasma or cytoplasm is the complete content of the cell with the exception of cell organelles. Cytoplasm is an organic fluid that forms the basic substance of every cell. Besides water, cytoplasm consists mainly of proteins, nutrients and enzymes that are essential for the cell’s function. Function of the cell plasma The cytoplasm … Cell plasma in the human body
What functions do the chromosomes have? The chromosome, as the organizational unit of our genetic material, serves primarily to ensure an even distribution of the duplicated genetic material to the daughter cells during cell division. For this purpose, it is worthwhile to take a closer look at the mechanisms of cell division or the cell … What functions do the chromosomes have? | Chromosomes
What is the normal set of chromosomes in humans? Human cells have 22 sex-independent chromosome pairs (autosomes) and two sex chromosomes (gonosomes), so a total of 46 chromosomes make up one set of chromosomes. Autosomes are usually present in pairs. The chromosomes of a pair are similar in shape and sequence of the genes and … What is the normal set of chromosomes in humans? | Chromosomes
What is a chromosomal aberration? The structural chromosomal aberration basically corresponds to the definition of chromosomal mutation (see above). If the amount of genetic material remains the same and is only distributed differently, this is called a balanced aberration. This is often done by translocation, i.e. the transfer of a chromosome segment to another chromosome. … What is a chromosomal aberration? | Chromosomes
What is a chromosome analysis? Chromosomal analysis is a cytogenetic method used to detect numerical or structural chromosomal aberrations. Such an analysis would be used, for example, in cases of immediate suspicion of a chromosomal syndrome, i.e. malformations (dysmorphies) or mental retardation (retardation), but also in infertility, regular miscarriages (abortions) and also certain types of … What is a chromosome analysis? | Chromosomes
Definition Chromatin is the structure in which the DNA, i.e. the genetic information, is packed. Chromatin consists on the one hand of DNA and on the other hand of various proteins. The function of chromatin is the tight packaging of the DNA. This packaging is necessary because the DNA as such would be much too … Chromatin
What are the chromatin filaments? Chromatin filaments are the structures consisting of DNA and the proteins of chromatin. The DNA as such is a very long structure. The DNA consists of building blocks that are arranged in a certain order and thus store the genetic information. As the DNA is wrapped around the histones, a … What are the chromatin filaments? | Chromatin
Definition – What are chromosomes? The genetic material of a cell is stored in the form of DNA (deoxyribonucleic acid) and its bases (adenine, thymine, guanine and cytosine). In all eukaryotic cells (animals, plants, fungi) this is present in the cell nucleus in the form of chromosomes. A chromosome consists of a single, coherent DNA … Chromosomes
Introduction The cell nucleus is the largest organelle of eukaryotic cells and is located in the cytoplasm, separated by a double membrane (nuclear envelope). As a carrier of genetic information, the cell nucleus contains the genetic information in the form of chromosomes (DNA strand) and thus plays an essential role in heredity. Most mammalian cells … Functions of the cell nucleus
Definition Every body cell has certain functional units, so-called cell organelles. They are the small organs of the cell and, like the large organs, have assigned areas of responsibility. Mitochondria and ribosomes belong to the cell organelles. The function of the cell organelles is different; some produce building material, others provide for order and clean … Mitochondria
Different types of mitochondria Three different types of mitochondria are known: the sacculus type, the cristal type and the tubule type. The classification is made on the basis of the indentations of the inner membrane in the interior of the mitochondria. Depending on how these indents look, the type can be determined. These folds serve … Different types of mitochondria | Mitochondria
