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Bright-field illumination is useful for samples that have an intrinsic color, for example mitochondria or the observation of cytoplasmic streaming in Chara cells. Comparison of transillumination techniques used to generate contrast in a sample of tissue paper (1.559 μm/pixel)
A photographic micrograph is a photomicrograph, and one taken with an electron microscope is an electron micrograph. A micrograph contains extensive details of microstructure. A wealth of information can be obtained from a simple micrograph like behavior of the material under different conditions, the phases found in the system, failure ...
A mitochondrion (pl. mitochondria) is an organelle found in the cells of most eukaryotes, such as animals, plants and fungi. Mitochondria have a double membrane structure and use aerobic respiration to generate adenosine triphosphate (ATP), which is used throughout the cell as a source of chemical energy. [2]
Mitochondrial DNA is a small portion of the DNA contained in a eukaryotic cell; most of the DNA is in the cell nucleus, and, in plants and algae, the DNA also is found in plastids, such as chloroplasts. [3] Human mitochondrial DNA was the first significant part of the human genome to be sequenced. [4]
Septa are usually perforated by pores large enough for ribosomes, mitochondria, and sometimes nuclei to flow between cells. The major structural polymer in fungal cell walls is typically chitin, in contrast to plants and oomycetes that have cellulosic cell walls. Some fungi have aseptate hyphae, meaning their hyphae are not partitioned by septa.
Oxyphil cells have a cytoplasm filled with many, large mitochondria. Oxyphil cells have abundant cytoplasmic glycogen and ribosomes that are interspersed between the mitochondria. The endoplasmic reticulum, Golgi apparatuses, and secretory granules are poorly developed in oxyphil cells of normal parathyroid glands [2]
The human mitochondrial genome is the entirety of hereditary information contained in human mitochondria. Mitochondria are small structures in cells that generate energy for the cell to use, and are hence referred to as the "powerhouses" of the cell. Mitochondrial DNA (mtDNA) is not transmitted through nuclear DNA (nDNA).
Then they are transported across the inner mitochondrial membrane into the matrix and converted into the acetyl CoA to enter the citric acid cycle. [7] [8] Apoptotic components released from the intermembrane space of a mitochondrion. The respiratory chain in the inner mitochondrial membrane carries out oxidative phosphorylation.