loose combination of DNA and proteins present in interphase
100
What happens during prophase?
DNA and proteins condenses into tightly coiled chromosomes.
200
What did Anton Van Leeuwenhoek study?
He studied new methods to making lenses to examine cloth
200
What is a Chromatid made up of?
one half of a duplicated chromosome
200
What occurs during metaphase?
Spindle fibers attach to each chromosome and they align the chromosome along the cell equator in the middle of cell
300
What kind of microscope did Matthias Schleiden use to observe cells?
A compound microscope
300
What is a Centrosome and where is it found?
Centrosomes are organelles found near the nucleus.
300
What is the Anaphase?
Chromatids separate from each other and fibers begin to shorten, which pulls the sister chromatids away from each other and towards opposite sides of the cell.
400
What did Theodor Schwann conclude about plants and animals?
That they are made up of cells
400
What do centrioles aid?
They aid mitosis
400
During telophase what occurs?
Complete set of identical chromosomes is positioned at each pole of the cell and nuclear membrane start to form,
chromosomes begin to uncoil, and spindle fibers fall apart.
500
What did Rudolf Virchow conclude about cell formation?
That they came from preexisting cells.
500
What is mitosis?
Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus.
500
What happens during the interphase of mitosis?
(Daily double)
Three stages occur, Gap 1 - growth and development, Synthesis - cell makes a copy of its nuclear DNA, and Gap 2 - Additional growth occurs.