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cell theory and cell structure (microscope (compound microscope (A…
cell theory and cell structure
prokaryotic cells
microscope
compound microscope
A compound microscope is a microscope which uses a lens close to the object being viewed to collect light (called the objective lens) which focuses a real image of the object inside the microscope
dissecting microscope
dissecting microscope is an optical microscope variant designed for low magnification observation of a sample, typically using light reflected from the surface of an object rather than transmitted through it.
scanning electron microscope
A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning it with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the sample's surface topography and composition.
transmission electron microscope
a form of electron microscope in which an image is derived from electrons that have passed through the specimen, in particular one in which the whole image is formed at once rather than by scanning.
eukaryotic cells
A eukaryote is any organism whose cells contain a nucleus and other organelles enclosed within membranes. Eukaryotes belong to the taxon Eukarya or Eukaryota.
isotonic- is the concentration of two solutions is the same
organelle-any of a number of organized or specialized structures within a living cell.
hypertonic-having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid.
prokaryote-a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles. Prokaryotes include the bacteria and cyanobacteria.
hypotonic-having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid.
animal cell-a eukaryotic cell in which all the organelles are contained in membranes.
eukaryote-an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus
cell membrane-the semipermeable membrane surrounding the cytoplasm of a cell.
plant cell-eukaryotic cells that differ in several key aspects from the cells of other eukaryotic organisms.
nucleus-a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.