Bio 353 exam 4 flash
- Arizona State University - Tempe
- Cell Biology
- Cell Biology 353
- Bio 353 exam 4 flash
2. Function as 'fences' helping to separate areas of the plasma membrane to stop certain proteins and lipids from getting into the basil Lamina, keeps the polarity of epithelial cells.
2. Allows neighboring cells to share signaling information.
glycoproteins by the nature, quantity and arrangement of their sugar side chains. They have a small protein part and can contain as much as 95% carbohydrates by weight in the form of long, unbranched chains (~80 sugars long).
Filopida, microvilli, lamelillopedia.
stress fibers, contractile ring, adhesion belts, and muscle contraction
v.Monitors/responds to external (nutrients, signaling molecules)
Tightening of contractile ring belt produces cleavage furrow. This belt is a bundle of actin microfilaments, myosin II, and other associated proteins
Reformation of the interphase cytoplasmic microtubules
M phase ends, cells enters G1 phase
II.Sister chromatids held together by cohesin
III.Mitotic spindle starts to assemble
V.Kinetochores form on centromere region
II Chromosomes are aligned at the equator of the spindle, midway between the spindle poles forming the metaphase plate
Kinetochore microtubules depolymerize
Interpolar microtubules elongate further and continue to push spindle poles apart
Nuclear envelope reforms
Condensed chromatin expands
Contractile ring forms, identifying the plane of division
Cohesins form protein rings that surround the sister chromatids keeping them united•
Kinetochores attach chromosomes to the mitotic spindleV
Activated APC indirectly triggers the cleavage of the cohesins that hold sister chromatids together
of the cell cycle
accumulates and binds to DNA
There it stimulates the transcription
of the gene that encodes the Cdk
inhibitor protein ____ which then binds to G1/S-Cdk
and S-Cdk and inactivates them, so
that the cell cycle arrests in G1
both extracellular (hormones, growth factors, nitric oxide) and
intracellular (cell's response to stress) signals that induce apoptosis
of large channel
• Cytochrome c binds to an adaptor and ATP which then cleaves
procaspase resulting in caspase
3.channel forming or gap junctions
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