HYS: CH1.1 - Cell Theory And CH1.2- Eukaryotic Cells Flashcards
Leeuwenhoek and Rudolph virchow
and cell theory
Before cells thought of as complete and inseparable into smaller parts
Anton can Leeuwenhoek first viewed cells under a microscope
Rudolph virchow shows disease cells arise from normal cells
Original cell theory and add ins
All living things are composed of cells
The cell is the basic functional unit of life
Cells arise only from preexisting cells
Add on
Cells carry genetic information in the form of DNA and is passed from parent to daughter cell
Are viruses considered living organisms?
Viruses have genetic material and but cannot reproduce on their own
Not considers living organisms
Prokaryotic vs eukaryotic cells
Prokaryotic cells
Single celled
No nucleus
Eukaryotic cells
Unicellular or multicellular
nucleus enclosed in membrane
Golgi, ER, ribosomes, cytoplasm, lysosome, nuclear membrane, cell membrane, centrioles, nucleolus inside nucleus, endocytotic vesicle
Cytosol allows for diffusion of molecules in and out of cell
Describe nucleus and nucleolus
Center of cell
Surrounded by nuclear envelope a double membrane
Nuclear pores allow for selective two way exchange of material between cytoplasm and nucleus
Genetic material in genes, linear DNA wrapped around proteins called histones, further wrapped in chromosomes
This makes DNA SEPARATE from RNA
Nucleolus is site of rRNA synthesis and takes up 1/4 size of nucleus, dark spot
Describe mitochondria
Outer membrane- Barrier for cytosol,
Inner membrane l- Cristae which have molecules and enzymes of ETC which increases surface area
Inter membrane space - between inner and outer membranes
Intermembrane space - space inside inner membrane
Have their own DNA and replicate independently of binary fission (cytoplasmic or extra nuclear inheritance which is independent of nucleus)
Originated when aerobic prokaryote and aerobic prokaryote resulted in symbiotic relationship
Inter membrane space of mitochondria and oxidative phosphorylation
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