Cell growth and Divison ch 11/ch 12.4 Flashcards
cell division
when a cell divides into two new daughter cells
asexual reproduction
process of reproduction involving one parent resulting in a genetically identical offspring
sexual reproduction
process of reproduction involving two parents resulting in the first cell of a new organism
out of three cubes varying in sizes which one would have the greatest ratio of cell membrane surface area relative to the volume of its cytoplasm?
the smallest cube
cell’s carry genetic info in packages of DNA called ..
chromosomes
Most _____ only have one circular strand of DNA
prokaryotes
In eukaryotic cells, the genetic structure consists of DNA and a tightly wound protein, which together form a substance called _______
chromatin
the beadlike structures formed by DNA wrapped around ________ proteins are called nucleosomes
histone
_________ make possible the precise separation of DNA during cell division
chromosomes
what is the name of the type of cell division that occurs in the prokaryotic cell cycle?
binary fission
What happens during interphase?
a period in the cell cycle when the cell grows.
In eukaryotic cells what happens in G1 phase that differs from G2 phase?
In G1 the cell is growing whereas in G2 the cell begins to move into place.
chromosome
threadlike structure within the nucleus that contains genetic information that is passed down from one gen to the next.
chromatin
substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones
cell cycle
series of events where a cell grows, prepares for division, and divides into two daughter cells
mitosis
part of eukaryotic cell division where the nucleus divides as well.
cytokinesis
division of cytoplasm to create two new daughter cells
prophase
the first and longest phase in mitosis in which the genetic material inside the nucleus condenses and the nucleus becomes visible
chromatid
one of two “sister” duplicated chromosome parts
centromere
region of a chromosome where the two chromatids attach
centriole
structure in animal cell that helps divide and organize cell division
metaphase
phase of mitosis where all chromosomes line up in the center of the cell
anaphase
phase of mitosis in which the chromosomes separate and move to opposite ends of the cell.
telophase
phase of mitosis in which the distinct individual chromosomes begin to spread out into a tangle of chromatin