(acrosome)
81Kin selection — From the time of antiquity field biologists have observed that some organisms tend to exhibit strategies that favor the reproductive success of their relatives, even at a cost to their own survival and/or reproduction. The classic example is a… …
82Centrosome — Schematic of typical animal cell, showing subcellular components. Organelles: (1) Nucleolus (2) Nucleus (3) Ribosomes (little dots) (4) Vesicle (5) Rough endoplasmic reticulum (ER) (6) Golgi apparatus (7) Cytoskeleton (8) Smooth ER (9)… …
83Cytoskeleton — The eukaryotic cytoskeleton. Actin filaments are shown in red, microtubules in green, and the nuclei are in blue. The cytoskeleton (also CSK) is a cellular scaffolding or skeleton contained within a cell s cytoplasm and is made out of protein.… …
84Cisterna — For other uses, see Cisterna (disambiguation). A cisterna (plural cisternae) comprises a flattened membrane disk that makes up the Golgi apparatus. A typical Golgi has anywhere from 3 to 7 cisternae stacked upon each other like a stack of dinner… …
85List of sexology topics — This is a list of topics related to sexology, human sexuality and marriage customs, and related topics such as human sexual anatomy, reproductive biology, andrology, gynaecology, obstetrics and, where relevant, anthropology. Note that this list… …
86Germ cell — Germ cells are progenitors of the gametes. These singled out cells move through the gut to the developing gonads and undergo mitotic proliferation followed by meiosis and differentiation into either eggs or sperm (mature gametes). Plants do not… …
87Eurasian Bullfinch — Bullfinch A pair in Germany (male is brighter red) Conservation status …
88Myofibril — 1. Axon 2. Neuromuscular junction 3. Muscle fiber 4. Myofibril Latin myofibrilla MeSH …
89Microtubule organizing center — The microtubule organizing center (MTOC) is a structure found in eukaryotic cells from which microtubules emerge. MTOCs have two main functions: the organization of eukaryotic flagella and cilia and the organization of the mitotic and meiotic… …
90Endosome — Electron micrograph of endosomes in human HeLa cells. Early endosomes (E labeled for EGFR, 5 minutes after internalisation, and transferrin), late endosomes/MVBs (M) and lysosomes (L) are visible. Bar, 500 nm. In biology, an endosome is a… …
