WebIt is in practical terms a ratio of demand to supply of nutrients. The demand will be proportional to volume, because the larger a cell is, the more nutrients, energy and organic materials it will need. The supply will depend on the surface area as it is through the membrane that the cell exchanges materials with the environment. If the ratio volume to … Web20 de mai. de 2024 · In eukaryotic cells they can also be found free in cytoplasm and mainly adhered to the external membrane of the karyotheca and of the ... Which are the more abundant ribosomes in secretory cells - the free cytoplasmic ribosomes or those associated with the rough endoplasmic reticulum? asked May 20, 2024 in Biology by …
Prokaryotic and eukaryotic cells (video) Khan Academy
Web4 de abr. de 2024 · Ribosomes can be found attached to the endoplasmic reticulum or free within the cytoplasm. ttsz/iStock/Getty Images Plus. There are two places where ribosomes commonly exist within a eukaryotic … WebThe big subunit contains 5S RNA and also 120 nucleotides, 4700 nucleotides and also 28S RNA, 5.8S RNA as well as 160 nucleotides subunits and 46 proteins. Eukaryotic cells … as物理35和36有什么区别
Cell size (video) Khan Academy
WebProkaryotic cells are more complicated than eukaryotic cells. 3. Only eukaryotic cells have membrane-bound organelles. 4. Bacteria and protists like amoeba are made of … Web18 de dez. de 2016 · Like eukaryotic cells, prokaryotic cells have cytoplasm, a gel-like substance that makes up the “filling” of the cell, and a cytoskeleton that holds components of the cell in place. Both prokaryotic cells and eukaryotic cells have ribosomes, which are organelles that produce proteins, and vacuoles, small spaces in cells that store nutrients … Web3 de abr. de 2012 · However, prokaryotic and eukaryotic ribosomes differ from several features. Prokaryotic ribosomes are 70S particles composing of 30S and 50S subunits. On the other hand, eukaryotic ribosomes are 80S particles composing of 40S and 60S subunits. We can consider this as a key difference between prokaryotic and … as用法归纳与总结