In eukaryotic cells steroid hormone response elements are found in the

Eukaryotic cells are often described by comparision with prokaryotic cells. There are many differences between these types of cells, the simplest distinction being that as pro karyotic cells are more prim ative than eukaryotic cells, eukaryotic cells are generally larger and much more sophisticated than prokaryotic cells due to the presence of a complex series of membranes that divide a typical eukaryotic cell into compartments and also due to the many different types of specialized organelles present in most eukaryotic cells. These features result in most eukaryotic cells being complex structures that have many self-controlled systems, . for generating energy, moving materials around, and even self-destruction in appropriate circumstances.
See compare prokaryotic vs eukaryotic cells for more about the differences between eukaryotic and prokaryotic cells.

In nonphotosynthetic cells, the principal fuels for ATP synthesis are fatty acids and glucose . The complete aerobic degradation of glucose to CO 2 and H 2 O is coupled to synthesis of as many as 36 molecules of ATP (Chapter 2). In eukaryotic cells, the initial stages of glucose degradation occur in the cytosol , where two ATP molecules per glucose molecule are generated. The terminal stages, including those involving phosphorylation coupled to final oxidation by oxygen, are carried out by enzymes in the mitochondrial matrix and cristae (Chapter 16). As many as 34 ATP molecules per glucose molecule are generated in mitochondria , although this value can vary because much of the energy released in mitochondrial oxidation can be used for other purposes (., heat generation and the transport of molecules into or out of the mitochondrion), making less energy available for ATP synthesis. Similarly, virtually all the ATP formed during the oxidation of fatty acids to CO 2 is generated in the mitochondrion. Thus the mitochondrion can be regarded as the “power plant” of the cell.

Many eukaryotes have long slender motile cytoplasmic projections, called flagella , or similar structures called cilia . Flagella and cilia are sometimes referred to as undulipodia , [23] and are variously involved in movement, feeding, and sensation. They are composed mainly of tubulin . These are entirely distinct from prokaryotic flagellae. They are supported by a bundle of microtubules arising from a centriole , characteristically arranged as nine doublets surrounding two singlets. Flagella also may have hairs, or mastigonemes , and scales connecting membranes and internal rods. Their interior is continuous with the cell's cytoplasm .

Smooth Endoplasmic Reticulum : Throughout the eukaryotic cell, especially those responsible for the production of hormones and other secretory products, is a vast network of membrane-bound vesicles and tubules called the endoplasmic reticulum, or ER for short. The ER is a continuation of the outer nuclear membrane and its varied functions suggest the complexity of the eukaryotic cell.
The smooth endoplasmic reticulum is so named because it appears smooth by electron microscopy. Smooth ER plays different functions depending on the specific cell type including lipid and steroid hormone synthesis, breakdown of lipid-soluble toxins in liver cells, and control of calcium release in muscle cell contraction.

In eukaryotic cells steroid hormone response elements are found in the

in eukaryotic cells steroid hormone response elements are found in the

Smooth Endoplasmic Reticulum : Throughout the eukaryotic cell, especially those responsible for the production of hormones and other secretory products, is a vast network of membrane-bound vesicles and tubules called the endoplasmic reticulum, or ER for short. The ER is a continuation of the outer nuclear membrane and its varied functions suggest the complexity of the eukaryotic cell.
The smooth endoplasmic reticulum is so named because it appears smooth by electron microscopy. Smooth ER plays different functions depending on the specific cell type including lipid and steroid hormone synthesis, breakdown of lipid-soluble toxins in liver cells, and control of calcium release in muscle cell contraction.

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