BIOL 1010 Lecture Notes - Lecture 7: Lipid Bilayer, Flagellum, Archaea
Document Summary
Lomoar cpsd| 987298: penicillin prevents formation of protective walls. Prokaryotes have a sticky outer coat called a capsule around the cell wall. Some prokaryotes have surface projections, short projections help attach to substrates. Prokaryotic cells: a type of cell lacking a membrane-enclosed nucleus. & other membrane-enclosed organelles; found only in the domains. Eukaryotic cells: a type of cell that has a membrane-enclosed nucleus & other membrane-enclose organelles. Bacteria & archaea are composed of eukaryotic cells. Plasma membrane: the membrane at the boundary of every cell that acts as a selective barrier to the passage of ions & molecules into and out of the cell; consists of a phospholipid bilayer with embedded proteins. Ribosomes: a cell structure consisting of rna & protein organized into 2 subunits & functioning as the site of protein synthesis in the cytoplasm. Eukaryotic cells, the ribosomal subunits are constructed in the nucleolus.