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19 Cards in this Set
- Front
- Back
Cell Theory::
What are the three basic facts? |
1) cell is basic structure
2) all organisms are composed of one or more cells 3) cell only arise from pre-existing cells |
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What are some other common characteristics of all cells? (7)
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-reproducings
-DNA is hereditary info - transcribe and translate - use proteins as catalysts -acquire and use energy -regulate gene expression -plasma memberane |
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What are the two classes of cells?
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prokaryotes and eukaryotes
(no nucleus and other organelles for prokaryotes) |
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Procaryotes (3) characteristics
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1) no live as single celled (or live together, in chains or clusters)
2) most diverse and inventive 3) lots of habitats (hot springs, etc, aerobic and anaerobic)(conditions similar to earth before oxygen rich environment) |
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Evolution of Procaryotes
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mitochondria was aerobic bacteria
that was taken up by an anaerobic cell |
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The two domains of the procaryotes are??
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eubacteria and archaea
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describe
eubacteria and archaea: |
eubacteria - in the soil, give illness
archaea:: in hostile environments (in stomaches with no oxygen) (conditions similar to earth before oxygen) |
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Describe all the organelles (short verison, (8)
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1) nucelus - contains DNA
2) mitchondria - powerhouse 3) chloroplasts - only in plants, photo. 4) ER::site of making membrane and exporting protein stuff 5) golgi::modifies stuff from ER and send its off 6) Peroxisomes::place for dangerous interactions 7) Cytocol: gel like stuff 8) cytoskeleton::movement and shape of cell 9) lysosomes::breaks down macromolecule |
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Describe::
Endocytosis Exocytosis (1) |
pinching off of membrane to capture stuff for import or export
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What is some (2) evidence for endosymbiotic hypothesis?
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1) mitochondria have own DNA
2) mitochondria are similar size to bacteria |
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DETAILS FOR ORGANELLES::
nucleus (2) |
1) DNA storage locker (stored as chromosomes)
2) nuclear memberane (two layers) |
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DETAILS FOR ORGANELLES::
mitochondria (5) |
1) Two memberanes (inner one is folds)
2) have own DNA 3) Divide own their own 4) harness energy by oxidation from food molecules 5)oxygen needed for getting max amount of energy |
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DETAILS FOR ORGANELLES::
Chloroplasts (4) |
1) in plants only
2) two memberanes, and another for internal stacks 3) chloropyll makes it green 4) site of photosynthesis |
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DETAILS FOR ORGANELLES::
Endoplasmic Reiculum *ER (4) |
1)site of creation of protein for cell membrane and for export
2) irregular maze enclosed by a membrane 3) contain Ribsomes (used for protein making) |
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DETAILS FOR ORGANELLES::
Golgi apparatus (2) |
1)modifes molecules from ER
2) then transports to final loation |
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DETAILS FOR ORGANELLES::
Lysosomes (1) |
used for intracelluar digestion
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DETAILS FOR ORGANELLES::
Peroxisomes (1) |
contained env. for dangerous reactions (hydrogen peroxide)
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what is a light microscope?
electron? |
beam of light pointed to illuminate stuff
use of beam of electrons (better details) |
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what is a transmission and scanning eletron?
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trans - used for think sections of tissue
scanning - scatter eletrons used for surface details of cells |