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Biology Lab 6

QuestionAnswer
Prokaryote Undergo Binary Fission, asexual reproduction, quick process due to having no nucleus, less chromosomes, etc.
Eukaryotic Cell Cycle; why? For growth, development, reproduction, and to repair/replace cells, longer procedure due to having a nucleus, more chromosomes, organelles, etc., identical process-daughter cells are identical to parent cell
1. Interphase Growth, preparation; nothing is dividing
1a. Gap 1 Growth; the cell increases in size and synthesizes proteins(necessary for DNA replication), organelles, and cytoplasm
1b. Synthesis DNA replication, chromosomes are duplicated – cells now have 2 full sets of DNA, if the parent cell has 23 chromosomes, then the daughter cells will have 23 chromosomes
1c. Gap 2 Checkpoint; checkpoint to check if G1 and S phase were completed correctly, any errors in DNA can lead to cell death or mutations
2. Mitosis Nuclear division
2a. Prophase Nuclear envelope and nucleolus no longer visible, chromatin condenses into visible chromosomes, spindle fibers form
2b. Metaphase Chromosomes are lined up across middle of the cell
2c. anaphase Sister chromatids are pulled apart and dragged to opposite sides of the cell (A away)
2d. telophase Two polar sets of DNA nuclear envelope re-forms around each set (Animal cells look for indentations) (Plant cells looks for a line in the middle), DNA is more condensed in this phase than in anaphase
cytokinesis Cytoplasmic division, occurs at same time as telophase but not a apart of mitosis; the cytoplasm divides and daughter cell forms
Cleavage furrow (cytokinesis) a shallow groove or indentation that forms in the plasma membrane of animal and some algal cells during the final stage of cell division called cytokinesis
Cell Plate Formation (cytokinesis) a shallow groove or indentation that forms in the plasma membrane of animal and some algal cells during the final stage of cell division called cytokinesis.
identify stage from picture
Created by: bethanygumpel
 

 



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