Chapter One Flashcards
What can be seen under microscope
Cell sizes,movement, shape changes, cell division, and cell staining
Light microscope magnification
Up to 1000x
Resolution of light microscope
.2nm
Magnification of transmission of electron microscope
1 million
Resolution of transmission electron microscope
2 no
Special about scanning electron microscope
Coats specimen with heavy metal
Magnification with scanning microscope
1 million
Resolution of scanning electron microscope
2nm
Characteristics of bacteria
One celled organism, circular DNA in cytoplasm, ribosomes, cells walls, have movement tails, quickly reproduce, shape can be rod shaped, spherical or spiral
Inner membrane of organelles is where what occurs
Cellular respiration
Function of chloroplasts
Photosynthesis
What is the cytosol
Cytoplasm with out organelles
Function of cytosol
Site for chemical reactions
What is the most organelle present in the cytosol
Ribosomes
Function of cytoskeleton
Structural support and shape
Cytoskeleton contains
Actin filaments, microtubules, intermediate filaments
Cytoskeleton assists with
Intracellular and extracellular movement
What makes up a model organism
Reproduce quickly, genetically manipulated, genetic properties have been preserved
Why E.coli used as model organism
Grows well in lab, most well understood
Why yeast as model organism
Robust and reproduce easily, immobile, can be genetically modified
Why arabidobsis Thailana used as model organism
Grown inside, produce offspring every 8 to 10 weeks, know complete genome
Why drosophila used as model organism
9 days from egg to adult, changed gene seen in phenotype
Why caenorhabiditis used as model organism
Life cycle is a few days, 70% of human protein similar to worm
Why zebra fish model organism
Developmental models, transparency helps studies
Why is a mouse a model organism
Bred with similar genetic mutations
Why humans as model organisms
Medical databases, report their own genetic pecuilarities
