a process of cell division that forms two new nuclei, each of which has the same number of chromosomes
100
How many chromosomes are in each daughter cell at the end of telophase I? At the end of telophase II?
Telophase I - 2 chromosomes in each homologous cells(diploid cells)
Telophase II - 2 chromatids in each (4) cells (haploid cells)
100
Fluctuation in population growth can correlate to changes in all of the following except
Weather
100
Name two locations where primary succession can happen
On rocks, lava, or sand dunes
100
What is the difference between a parasite and parasitoid?
Parasites live off another organism's tissue; parasitoid lays its eggs on host larvae-obtaining nourishment from host
200
What are the phases of mitosis?
Prophase,metaphase,anaphase,telephase
200
How do cells at the completion of meiosis compare with cells that have replicated their DNA and are just about to begin meiosis?
They have half the number of chromosomes and one-fourth the amount of DNA
200
What is the difference between mutualism and commensalisms?
Mutualism - both species benefit
Commensalisms - one species benefits, while other species is neither helped nor harmed
200
What is Chromatin?
The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing, it exists as a mass of very long, thin fibers that are not visible with a light microscope
200
How do plants use meiosis and mitosis?
Plants use meiosis to produce haploid cells that then reproduce by mitosis to make multicellular structures
300
What happens during prophase?
Protein fibers cross cell to form mitotic spindle
300
During meiosis I, A cell divides to produce two daughter cells that are genetically different
True or False
True
300
What is the term for fluctuations in population size in response to vamping effects of limiting factors?
Population Cycles
300
What is the term for species coexisting in spite of competition for resources?
Resource partitioning
300
What are K-related species?
one whose population size remains relatively constant
400
What happens to the centrioles during prophase
move to the opposite poles of the cell
400
After telophase I of meiosis, the chromosomal makeup of each daughter cell is
haploid, and the chromosomes are each composed of two chromatids
400
In what condition does a habitat have to be in for secondary succession to occur?
The habitat is entirely or partially destroyed by some kind of wide scale event
400
How do the daughter cells at the end of mitosis and cytokinesis compare with their parent cell when it was in G1 of the cell cycle?
The daughter cells have the same number of chromosomes and the same amount of DNA
400
When does primary succession occur?
this occurs on substrates that never previously supported living things
500
What happens during metaphase?
Chromosomes align
along middle of cell
500
How do cells at the completion of meiosis compare with cells that have replicated their DNA and are just about to begin meiosis?
They have half the amount of cytoplasm and twice the amount of DNA
500
Name a reason that allowed for the exponential growth of human population
Increase in food supply; reduction in disease; reduction in human wastes; expansion of habitat
500
During meiosis, what step is Anaphase I and what happens during that phase?
What is The third phase of meiosis I. the replicated homologous chromosomes are separated (the tetrad is split) and pulled to opposite sides of the cell.