Cells and Cell Growth Flashcards
Hayflick Limit
experiments on limits to cell division
Elizabeth Blackburn
the role of telomeres in cell division
Mitosis:
the process of cell division where the contents of the cell are duplicated, then the cell is split into 2 offspring cells that are diploid (2N)
The phases of mitosis
IPMAT
Interphase
cell prepares to divide –by making new proteins, organelles, and chromosomes.
Prophase
chromosomes are visible, nuclear membrane breaks down, microtubules attach to chromosomes
Metaphase
chromosomes line up on equator of cell
Anaphase
sister chromatids are pulled apart by microtubules
Telophase
cell division occurs (cytokinesis); chromosomes uncoil, nuclear membrane reforms, microtubules disappear
Meiosis
the process of cell division where the contents of the cell are duplicated, then the cell contents divide, then the contents divide again resulting in 4 offspring cells that are haploid (1N)
Monomers
amino acids and nucleotides
Polymers
proteins, nucleic acids
Endosymbiotic Theory
Eukarya includes
Protists, Plants, Animals, Fungi
Archaea
ancient, prokaryotes, extremeophiles, no organelle or nucleus
Bacteria
cell wall made chitin, TB, Salmonella, E. coli
Autotroph
makes own food from sun
Heterotroph
ingests its food
Chemotroph
uses sulfur or ammonia as energy
Eukarya
animals, plants, fungi, protists,