Start Meiosis -- Lecture 8 Flashcards
cytokinesis (what is it)
process of dividing 1 cell into 2
cytokinesis in animal cells:
animal cells use a ___
contractile ring
cytokinesis in animal cells:
___ use a contractile ring
animal cells
cytokinesis in animal cells:
contractile ring is composed of
actin microfilaments
myosin motor proteins
cytokinesis in animal cells:
in the contractile ring, ___ and ___ contract rapidly to pinch cell in 2, forming a cleavage furrow
actin microfilaments
myosin motor proteins
cytokinesis in animal cells:
in the ___, actin microfilaments and myosin motor proteins contract rapidly to pinch cell in 2, forming a cleavage furrow
contractile ring
cytokinesis in animal cells:
in the contractile ring, actin microfilaments and myosin motor proteins contract rapidly to pinch cell in 2, forming a ___
cleavage furrow
cytokinesis in plants:
vesicles (definition)
membrane-bound delivery vehicles
cytokinesis in plants (steps)
1) vesicles accumulate in middle of cell
2) vesicles bring the necessary material to form a temporary structure called a cell plate
3) cell plate goes thru a series of biochemical changes and becomes the cell wall
vesicles in middle –> cell plate –> cell wall
chromosome terminology:
In human cells: in G1: there are 46 one-chromatid ___
chromosomes
chromosome terminology:
In human cells: in G1: there are ___ one-chromatid chromosomes
46
chromosome terminology:
In human cells: in G1: there are 46 ___-chromatid chromosomes
one
chromosome terminology:
In ___ cells: in G1: there are 46 one-chromatid chromosomes
human
chromosome terminology:
the chromosomes are in ___: 1 from Mom, 1 from Dad
pairs
chromosome terminology:
each pair chromosomes are referred to as ___ or ___
homologs
homologous chromosomes
chromosome terminology:
homologous chromosomes are very similar but ___
slightly different