BIO 105 1st Edition Lecture 5CellsPrevious Lecture:Macromolecules and AtomLecture Outline:I. Know the definition of a cellII. Know the function of each cell structureLecture: Cell- smallest unit of life that can survive on its own or has potential to do so Structure of Cells Plasma Membrane- outermost membrane- give shape to cell- things can pass across this membrane Nucleus- Region where DNA is stored, cellular control center (brain of the cell) Cytoplasm- everything between plasma membrane and region of DNA Cell Membraneso Phospholipid bilayer- has phosphate head and two fatty acid tails Endoplasmic Reticulum- manufacturing center for proteinso Rough ER: ribosome covered, manufactures membranes, assembles proteinso Smooth ER: no ribosomes, build lipids, controls toxins in body Golgi Apparatus- finishes, sorts, and ships cell products (like the post office) Vesicles- delivery cart, different vesicles depending on its’ duty Mitochondria- powerhouse of the cell, ATP- producing powerhouse Chloroplasts- convert sunlight energy to ATP through photosynthesis (only in plants) Cell- to- Cell Junctions Adhering junctions- hold down (tight junction)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Gap junctions- free
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