Weegy: Hi there, what do you want to know about cell biology development? User: i want to know the development of cell,how Weegy: Okay, got it. [ The term cell growth is used in the contexts of cell development and cell division (reproduction) When used in the context of cell division, it refers to growth of cell populations, where one cell (the "mother cell") grows and divides to produce two "daughter cells". The cell growth can be detected by a variety of methods. The cell size growth can be visualized by Microscopy, using suitable stains. But the increase of cells number is usually more significative. It can be measured by manual counting of cells under microscopy observation, using the dye exclusion method (i.e. Trypan blue) to count only viable cells. Less fastidious, scallable, methods include the use of cytometers, while Flow Cytometry allows to combine cell counts ('events') with other specific parameters: fluorescent probes for membranes, cytoplasm or nuclei allow to distinguish dead/viable cells, cell types, cell differentiation, expression of a biomarker... Beside the increasing number of cells, one can be assessed regarding the metabolic activity growth. I.e. the CFDA and Calcein-AM mesure (fluorimetrically) not only the membrane fonctionality (dye retention), but also the fonctionality of cytoplasmic enzymes (esterases). The MTT assays (colorimetric) and the Resazurin assay (fluorimetric) dose the mitochondrial redox potentiel. Finally, all these assays may correlate well, or not depending on cell growth conditions and desired aspects (activity, proliferation). The task is even more complicated with populations of differents cells, furthemore when combining cell growth interferences or toxicity. ] (More)

Weegy: There are a lot of different kinds of cells. Different cells can have different purposes, different jobs, different shapes, and different characteristics. [ [ For example, plant cells have a cell wall and animal cells don't. Cells come in different shapes. They can be shaped like snowflakes, balls, cubes, saucers, rectangles, boxes, coils, or blobs of jelly. Animals cells are usually spherical or flat-sided. The amoeba, a one-celled organism that lives in water, has no regular shape. It is a jelly-like cell that changes shape to move around. Some muscle cells are long, thin, and pointed on both sides. Some nerve cells, with their long branches, look like trees. The sizes of cells can be very different. Most cells are 1/1,000 of an inch (0.0025 centimeter) in diameter. Around 500 average sized cells could fit on a period at the end of a sentence. The bacterial cell is one of the smallest of all the cells, and the yolk of a ostrich egg is the biggest of all cells. ] ] (More)

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Weegy: An insoluble protein in the stroma of erythrocytes. (More)

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