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BIOL 1020 Zanzot Exam 3 With Complete Solutions 100% Correct
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BIOL 1020 Zanzot Exam 3 With Complete Solutions100% Correct
cell division - ANSWER continuity of life based on reproduction of cells
ablility of organism to live longer as means of individual cells reproduction
genesis
genome - ANSWER all DNA in a cell
can contain single DNA (prokaryotes) or multiple eukaryotes
chromosome - ANSWER DNA molecules packaged into this
chromatin - ANSWER uncondensed DNA
somatic cells - ANSWER non reproductive cells
2n
gametes - ANSWER reproductive cells
n
n= - ANSWER 23
once sister chromatids separate they are called - ANSWER chromosomes
mitosis - ANSWER division of genetic material in nucleus
cytokinesis - ANSWER division of cytoplasm
phases of cell cycle - ANSWER Interphase (G1, S, G2)
Mitosis (PMAT)
interphase - ANSWER cell growth and copies chromosomes for preparation for cell
division
where cell spends most of its time
,prophase - ANSWER centrosomes migrate apart, connected with miotic spindle
2 sister chromatids of one chromosome
prometaphase - ANSWER fragments of nuclear envelope
sister chromatids begin moving towards center
metaphase - ANSWER chromosomes lined up at metaphase plate
anaphase - ANSWER sister chromatids separate
kinetochores separate, push/pull motion
cell elongates
telophase - ANSWER nucleus starts to reform
cleavage furrow (or cell plate in plants)
miotic spindle - ANSWER structure composed of microtubules that guides the
movement of chromosomes
aster - ANSWER cluster of short microtubules, emanates from each chromosome
prokaryotes undergo - ANSWER binary fission
binary fission - ANSWER chromosome initiates replication
copy is manufactured at origin of replication
each copy travels to opposite poles of the cell
cell replication is completed and there are two daughter cells
, mitosis likely evolved from - ANSWER binary fission
cell cycle control system seems to be present in the - ANSWER cytoplasm
2 types of regulatory proteins in cell cycle - ANSWER cyclins and cyclin-dependent
kinases Cdks
cyclin and cdks are - ANSWER complementary proteins
as one goes up, the other goes up
maturation promoting factor (MPF)-ANSWER cyclin-cdk complex that stimulates a cell to
pass through the G2 checkpoint into metaphase
when MPF builds up-ANSWER it gives the green light for mitosis to proceed
anchorage dependence-ANSWER to divide the cell needs to be anchored to something
common in most cells
density dependence-ANSWER stunts growth of cells due to lack of growth when too
many cells within a given area
pdgf platlette derived growth factor ANSWER stimulates mitosis
cancer cells ANSWER dont respond normally to bodys control mechanisms
may make their own growth factor, have external growth factor, or have an abnormal
cell cycle control system
transformation ANSWER when cell starts dividing unchecked
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