1st QTR L4 & L5 GR7

• An English Botanist developed/invented a crude two to three-lens Microscope


  Robert Hooke
• he discovered the Cell Wall Book of small drawings “Micrographia”


  Robert Hooke
• Discovered the "animalcules" know today as the protozoans, in rain and pond water


  Antonie Van Leewenhoek
• He was the first to discover: Bacteria, protozoans, nematodes, rotifers, and many other microorganism

  Antonie Van Leewenhoek
• Discovered the dark-stained structure at the center of every cell; which is called the NUCLEUS


  Robert Brown
• Nucleus is the center of the Cell


  true
• Observed that all animals are also made up of CELLS


  Theodor Schwann
• what cell did Theodor Schwann discovered

  animal cell
• Conclude that cells can self-reproduce


  Rudolf Carl Virchow
• Cells can only arise from the division of a previously existing cell


  true
• All organisms are composed of one or more cells


  true
• The cell is the basic unit of life


  cell/true
• All cells arise only from a pre-existing cells


  true
• Humans are made up of Cells

  true
• how many cells are humans made up?

  70 and 100 trillion cells
• facilitate Reproduction

  cell
• Cells work together to carry out different functions that are essential to our body

  true
• Commonly used tool in Biology


  Microscope
• Used to examine objects, tissues, and cells that are too small

  microscope
• this type of micro. uses sunlight or artificial light


  compound microscope
• A light microscope that uses more than one lens to enlarge an object

  compound microscope
• Also known as the Dissecting Microscope

  stereomicroscope
• It has a lower magnification than a compound light microscope

  stereomicroscope
• Used to examine highly transparent objects such as unstained cells


  phase-contrast microscope
• 3D images of live, unstained specimens


  phase-contrast microscope
• Uses beams of electrons to create an image of a specimen up to 250 000 times on its original size


  electron microscope
• It glows in the dark


  light fluorescent microscope
• illuminates objects stained with fluorescent dyes

  light fluorescent microscope
• • Used to determined in 3D structure of the cell, but without cutting the specimens


  confocal scanning microscope
• what are the 2 major parts of cell?

  nucleus and cytoplasm
• the command center of the cell


  nucleus
• contains most parts of the cell


  cytoplasm
• Also known as the Plasma Membrane or Plasmalemma


  cell membrane
• A double layered membrane that encloses the cell


  cell membrane
• it is a fluid-like mosaic model

  cell membrane
• It is the boundary between cell and the external environment


  cell membrane
• allows the entry of water


  cell membrane
• an additional boundary outside the cell membrane

  cell wall
• It is made up of cellulose; that supports and protects the cell from the damage

  cell wall
• Act as the brain of the cell

  nucleus