Ch. 10 Flashcards
What is made of strands of DNA and proteins (histones)
also tightly coiled during cell division
Chromosomes
In prokaryotes a single chromosome is attached to what?
plasma membrane
Some prokaryotes have small circular strands of DNA called what?
Plasmids
tf
Each chromosome contains different genetic information that has to be passed on to new cells
True
What two things need to happen in order for genetic information to be passed o new each cell?
1.Chromosomes need to be copied and
2.The copies divided
What are the two main phases of the cell cycle
- Interphase
- Miotic phase
What miotic phase do most cells spend their time in?
Interphase
Name of the period when chromosomal pairs are separated.
Mitosis
Name of period when cells divide
cytokinesis
what are used to sort chromosomes and pull them apart?
Protein fibers
What are the 4 stages of mitosis
- Prophase
- Metaphase
- Anaphase
- Telophase
What is the term for identical copies of the same chromosome?
Sister chromatids
What is the name of the location in which the sister chromatid are attached?
Centromere
Name of the of the long strands of proteins in prophase
Miotic spindle
Where are the centers that produce the miotic spindle?
Microtubule organizing centers (MTOCs)
In which phase does the nuclear membrane break down?
Prophase
In what stage does the miotic attach to the sister chromatid pairs?
Prophase
tf:
longer protein fibers can pull with more force
True
In what phase of mitosis do the chromosomes line up in the middle of the cell?
Metaphase
in what miotic phase are the sister chromatids pulled apart and moved to opposite sides of the cell?
Anaphase
In which miotic phase are two new nuclear membranes formed and the chromosomes become unwound
Telophase
What is the result of mitosis without cell division?
Multinucleate cells.
