Electron micrographs Mitochondria

FIGURE 21.1 (a) All electron micrograph of a mitochondrion, (b) A drawing of a mitochondrion with components labelled, (a, B. King/BPS)... 

Figure 5-16 (A) Electron micrograph of the network of catenated DNA circles in the mitochondrion of the trypanosome Crithidia fasciculata. (B) and (C) The same network after treatment with a topoisomerase from bacteriophage T4 that catalyzes a decatenation to form individual covalently closed circles (Chapter 27). Five times as much enzyme was added in (C) as in (B). Two sizes of circles are present. Most are "minicircles", each containing about 2300 bp but a smaller number of larger 35-kb "maxicircles" are also present. One of these is marked by the arrow. From Marini, Miller, and Englund.183...

Electron micrograph of a thin section of a liver mitochondrion. Courtesy of Dr. Daniel S. Friend... 

Figure 4. Electron micrograph of longitudinal sections of Chlamydomonas reinhardtii Dang. A. Control cell B. Cell treated 1 h with 1.0-1.5 g/ml nonylphenol C. Chloroplast d. dichtyosome f. flagella m. mitochondrion mi. microtubules n. nucleus p. pyrenoid pi. plasmalemma.

Figure 17.1. Mitochondrion. The double membrane of the mitochondrion is evident in this electron micrograph. The numerous invaginations of the inner mitochondrial membrane are called cristae. The oxidative decarboxylation of pyruvate and the sequence of reactions in the citric acid cycle take place within the matrix. [(Left) Omikron/Photo Researchers.]...

Figure 18.1. Electron Micrograph of a Mitochondrion. [Courtesy of Dr. George Palade.]...

Figure 18.2 Electron micrograph (A) and diagram (B) of a mitochondrion. [(A) Courtesy of George Pa lade. (B) After Biology of the Cell by Stephen L. Wolfe. 1972 by Wadsworth Publishing Company, Inc., Belmont, California 94002. Adapted by permission of the publisher]... 

Figure 3. (Upper Panel). Scanning electron micrograph of an H. rufescens spermatozoon. The sperm head, from mitochondrion (M) to tip of the acrosome vesicle (granule AV) is 7 pm. The width of the nucleus (N) is 1 pm. (Lower Panel). Transmission electron micrograph of the acrosomal vesicle showing it attached to the nucleus (NF) by the rod of actin filaments (AF). The darker material labelled 1 shows the location of the 18K protein and 2 shows the location of lysin (from Lewis et al., 1980).

A FIGURE 5-26 Electron micrograph of a mitochondrion. Most ATP production in nonphotosynthetic cells takes place in mitochondria. The inner membrane, which surrounds the matrix space, has many infoldings, called cristae. Small calcium-containing matrix granules also are evident. [From D. W. Fawcett, 1981, The Cell, 2d ed., Saunders, p. 421.]... 

These initial studies indicate that the 6 kb molecule is the mitochondrial genome. If borne out, it would be the most compact mitochondrial genome described to date. The subcellular location of the 35 kb molecule remains a mystery. One possibility is that it is within the spherical body , a double-membrane enclosed organelle which is closely apposed to the mitochondrion in electron micrographs (68). The function of the spherical body is unknown. 

Fig. 10.18. Mitochondrion. Electron micrograph (top) three-dimensional drawing (bottom).

FIGURE 19.2 The structure of a mitochondrion. (For an electron micrograph of mito-... 

FIGURE 20.12 Electron micrograph of projections into the matrix space of a mitochondrion. 

Figure 8.5. The mitochondrion, the energy factory of the cell. (Top) Electron micrographs (A),(B),and (C) of the inner mitochondrial membrane studded with stalks and headpieces that are the extramembrane components of ATP synthase with the remainder contained within the inner membrane. (Bottom) Drawing of a mitochondrion with an outer membrane and a folded inner mitochondrial membrane enclos-...

A schematic representation of the mitochondrion and of vesicles derived from it, as well as electron micrographs showing the stalk and... 

Figure 8.7. Reconstructions from electron micrographs of Complex I (NADHmbiquinone oxidore-ductase) of the electron transport chain of the inner membrane of the mitochondrion. (A) A more detailed L-shaped structure obtained at high ionic strength. (B,C) Structures obtained at high ionic...

Fig. 16.2 Diagram of an electron micrograph of a section through a resting cell of bakers yeast Saccharomyces certvisiae). ER, endoplasmic reticulum M, mitochondrion N, nucleus Nm, nuclear membrane Nn, nucleolus Pi, invagination PI, plasmalemma V, vacuole Vp, polymetaphosphate granule W, cell wall Ws, bud scar L, lipid granule (sphaerosome).

Fig. 3.18. Cell of a hypothetical oil seed producing storage proteins and sequestering them within a vacuole. P polyribosomes, D dictyosome, V storage vacuole, M mitochondrion, CW cell wall, GV membrane-bound vesicles. L plastid, S oil body, PD plasmodesma N nucleus, Nu nucleolus, ER endoplasmic reticulum. Kindly provided by J.C. and M.W. Dieckert. See also Dieckert and Dieckert, 1972 [5] scheme devised from electron micrographs presented in this paper...

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