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GBio CH 4 mitosis

mitosis and the cell cycle

What are the phases of mitosis? prophase, metaphase, anaphase, telophase (technically interphase isn't part of mitosis it is the stage before mitosis)
What are the two stages of the cell cycle? interphase and mitosis
Which phase occurs when the nucleus disappears and DNA condenses into chromosomes? prophase
Which phase occurs when the chromosomes get pulled apart into their chromatids? anaphase
Which phase occurs when the spindle fibers cause the chromosomes to line up in the middle of the cell? metaphase
which part of the cell cycle occurs when the cell duplicates its DNA? interphase
which phase occurs when the dividing cell splits into two cells with the same number of chromosomes as the parent cell? telophase
what is it called when the cytoplasm pinches off at the end of telophase? cytokinesis
what part of the chromosome do you count to tell how many chromosomes there are in the cell? the center
what is DNA called when it coils into the shape of an "x" chromosome
what is DNA called when DNA is coiled in the nucleus and doesn't have a specific shape? chromatin
A duplicated chromosome has _____ arms. 2
what is one arm of a duplicated chromosome called? chromatid
why do cells do mitosis? to grow new cells, replace worn out cells, or to repair wounds
what kind of cells in the body are always dividing? skin cells
what kind of cells no longer divide? nerve and muscle cells
How many chromosomes does as normal human cell have? 46
when a normal human cell goes through interphase and mitosis how many cells will be made? one cell will split into two
mitosis creates cells that are genetically _________ to the parent cell identical
if a human cell has 46 chromosomes how many chromosomes will be in the cell that it creates during mitosis? 46 chromosomes
In which type of cell does this occur: the cytoplasm is divided by a cell plate? plant cells only
how many pairs of chromosomes do humans have? 23
do almost all human cells have exactly the same amount of DNA in them? yes
what is asexual reproduction? a new organism is produced from one organism. the hereditary material in the offspring is identical to the parent.
organisms with eukaryotic cells asexually reproduce by.... cell division
organisms like bacteria (prokaryotes) reproduce by... binary fission (a type of asexual reproduction)
what is binary fission? the DNA (NOT in a nucleus) gets copied and then divided into two identical organisms.
what is budding? a type of asexual reproduction where a new organism grows from the body of the parent organism
what is regeneration? using cell division to regrow body parts
Created by: ruth.baker