+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
Cell division plays importnat roles in the ___ and ___ of tissues in multicellular organisms, as well as the ___ of all organisms
|
Growth; repair; reproduction
|
|
In order for a cell to divide, what 4 events must occur?
|
1. Reproductive signal to initiate cell division. May originate from inside or outside the cell2. Replication of DNA3. Segregation of DNA to 2 new cells4. Synthesizing needed enzymes and organelles, and new material added to the plasma membrane
|
|
The process of separating the 2 new cells in cell division is:
|
Cytokinesis
|
|
What is the process of cell division for prokaryotes?
|
Binary fission
|
|
What are the external factors for the initiation of cell division in prokaryotes?
|
Environmental conditions and nutrient concentrations
|
|
What is a chromosome?
|
DNA molecule containing genetic info
|
|
When a cell divides, ___ of its chromosomes must be replicated, and __ copy/copies of each chromosome must find its way into the 2 new cells
|
All; one
|
|
JHow many chromosomes do prokaryotes usually have?
|
1
|
|
___ chromosomes are characteristic of most prokaryotes as well as some viruses, and are also found in the ___ and ___ of eukaryotic cells
|
Circular; chloroplasts; mitochondria
|
|
What regions of the prokaryotic chromosomes play functional roles in cell production?
|
-Ori: Replication of circular chromosome starts-Ter: Site where replication ends
|
|
What type of metabolism is active while the DNA replicates in prokaryotes?
|
Anabolic metabolism, cell grows
|
|
In rapidly dividing prokaryotes, ___ occupies the entire time between cell division
|
DNA replication
|
|
For prokaryotic division, replication begins near the ___ of the cell, and as it proceeds the ___ regions move toward ___ of the cell
|
Center; ori; opposite ends
|
|
The prokaryotic ___ may be involved in DNA segregation by actively moving the DNA along or passively acting as a "railroad track" along which the DNA moves
|
Cytoskeleton
|
|
What kind of a process is DNA sequences adjacent to the ori binding proteins that are essential for segregation in prokaryotic cells and how is it?
|
Active process because the binding proteins hydrolyze ATP
|
