Cell Growth/division Test Flashcards
SA:V
As both increase, volume increases faster
2 main factors that control cell size
- information overload prevention
- exchange of materials
Advantages to asexual
- faster
* better in a stable environment, because if parent does well so does offspring
Disadvantages for asexual
In an unstable environment, if one does, probably all die
Advantages sexual:
- population can adapt because there is an increased genetic variation
- better in an unpredictable environment
Disadvantages for sexual
•slower
DNA is stored in _________ which are found in the __________ (___ only)
Chromosomes, nucleus, eukaryotes
Prokaryotes are found in _______
Cytoplasm
In prokaryotes…
One circular chromosome, just DNA
No proteins
In eukaryotes…
Linear chromosomes(1+)
In eukaryotes, DNA wound around ______ _______, coiled and coiled some more
Histone proteins
Prokaryotes undergo _____ ______
Binary fission
(Split in 2)
ASEXUAL
Interphase
G1, S, G2 <—- majority of time spent in cell cycle
M Phase
•includes mitosis and cytokinesis
Prophase
Longest phase, genetic material inside the nucleus condenses and the duplicated chromosomes become visible. Out side of the nucleus, spindles start to form
Metaphase
The centromeres of the duplicated chromosomes line up across the center of the cell. Spindle fibers connect the centromere of each chromosome to the 2 poles of the spindle.
Anaphase
Chromosomes desperate and move along spindle fibers to opposite ends of the cell
Telophase
Chromosomes, which were distinct and condensed, begin to spread out into a tangle of chromatin
