Gender Roles in “the Odyssey”, by Homer
Eukaryotic organelles Margaret Walsh South University Online
Eukaryotic organelles Living things have evolved into three categories of closely related organisms, called "domains": Archaea, Bacteria, and Eukaryota. Life as we see it each day — including plants and animals — belongs to the third domain, Eukaryota. Eukaryotic cells are a more complex opposed to prokaryotes (simpler based cells), and the DNA is linear and found within a nucleus. Organelles are small structures within cells that perform specialized functions. They are found within the cytoplasm (a semiliquid substance that composes the foundation of a cell) Just as the name indicates, you can think of organelles as small organs. There are a dozen different types of organelles commonly found in eukaryotic cells. Some structures of organelles are membrane bound. The Plasma Membrane is a membrane boundary of a cell, and sorts cell transport and is the outermost cell surface. It separates the cell from the external environment. The plasma membrane is made mostly of proteins and lipids, especially phospholipids. The lipids occur in two layers (a bilayer). Proteins embedded in the bilayer appear to float within the lipid, so the membrane is constantly in flux. The membrane is therefore referred to as a fluid mosaic structure. Within the fluid mosaic structure, proteins carry out most of the membrane 's functions (prokaryote and eukaryote cell structure, 2000.). The nucleus of eukaryotic cells is composed primarily of protein and deoxyribonucleic acid, or DNA. The DNA is organized into linear units called chromosomes. Functional segments of the chromosomes are referred to as genes. Approximately 100,000 genes are located in the nucleus of all human cells. Within the nucleus are two or more dense organelles
Eukaryotic organelles Living things have evolved into three categories of closely related organisms, called "domains": Archaea, Bacteria, and Eukaryota. Life as we see it each day — including plants and animals — belongs to the third domain, Eukaryota. Eukaryotic cells are a more complex opposed to prokaryotes (simpler based cells), and the DNA is linear and found within a nucleus. Organelles are small structures within cells that perform specialized functions. They are found within the cytoplasm (a semiliquid substance that composes the foundation of a cell) Just as the name indicates, you can think of organelles as small organs. There are a dozen different types of organelles commonly found in eukaryotic cells. Some structures of organelles are membrane bound. The Plasma Membrane is a membrane boundary of a cell, and sorts cell transport and is the outermost cell surface. It separates the cell from the external environment. The plasma membrane is made mostly of proteins and lipids, especially phospholipids. The lipids occur in two layers (a bilayer). Proteins embedded in the bilayer appear to float within the lipid, so the membrane is constantly in flux. The membrane is therefore referred to as a fluid mosaic structure. Within the fluid mosaic structure, proteins carry out most of the membrane 's functions (prokaryote and eukaryote cell structure, 2000.). The nucleus of eukaryotic cells is composed primarily of protein and deoxyribonucleic acid, or DNA. The DNA is organized into linear units called chromosomes. Functional segments of the chromosomes are referred to as genes. Approximately 100,000 genes are located in the nucleus of all human cells. Within the nucleus are two or more dense organelles
References: Caldwell, R. (2013). Understanding evolution. Retrieved from http://evolution.berkeley.edu/evolibrary/article/_0_0/endosymbiosis_03 Cooper, G. (1997). The cell: A molecular approach. Retrieved from http://bioweb.wku.edu/courses/Biol220CAR/12ECell Membrane structure and function. (2009, 09 02). Retrieved from http://bioticpotentials.blogs.rice.edu/?p=9 Unknown. (2012). Corbar.edu. In Retrieved from http://defiant.corban.edu/jjohnson/pages/humanat/02cell/nonmemborg2.html