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BIOL 1101 Final

In-Class Notes, Cell Cycle and Mitosis

QuestionAnswer
What is a phosphorylated ERK enters the nucleus to control expression of genes in cell division & poliferation
What is Wnt & EGF do? activates a series of transcription factors that lead to the expression of Cyclin D
What cyclin corresponds to G1? cyclin D
What cyclin corresponds to S phase? cyclin E
What cyclin corresponds to G2? cyclin A
What cyclin corresponds to mitosis? cyclin B
What are the functions of activated CDKs? phosphorylate target proteins that activate DNA replication, mitosis, and cytokinesis
Which CDK does cyclin D correspond to? CDK4
Which CDK does cyclin E correspond to? CDK2
Which CDK does cyclin A correspond to? CDK2
Which CDK does cyclin B correspond to? CDK1
What occurs after the S-phase/at the end? two chromatids attached to each othr by protein bridge
When does condensation of DNA start? propahase
When does DNA replication start? in Sphase
What is spinale? web of microtubules that anchor at centrioles at poles of cell
What do spinale attach to and their function attach to chromosomes and direct their movement
What occurs at prometaphase nuclear envelope fragments, MTs enter nucleus, kinetochore established in each chromosome pair, microtubules attach to kinetochores, non-kinetochore MTs interact with opposite pole MTs
What occurs at metaphase? chromosomes align at metaphase and metaphase plate
What occurs at anaphase? kinetochore microtubules shorten and non-kinetochore microtubules lengthen, sister chromatids separate and move to opposite poles
What is an anaphase-promoting complex (APC)? ligase that targets mitotic cyclin and securin for degradation
What occurs at telophase? chromosomes reach cell poles, kinetochores disappear, non-kinetochore microtubules continue to elongate, nuclear membrane reforms, chromosomes decondense
What occurs at cytokinesis? microfilaments form around cell -> make cleavage furrow -> pinched an two cells form
What occurs in cytokinesis in plants? carbohydrate-rich vesicles -> form around center of cells -> vesicles fuse -> cell plate begins to form
Created by: goldengalleon
 

 



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