Topic 2 Flashcards
2 Major cell structures
Nucleus
Cytoplasm
Principal molecular component of cell
Deoxyribonucleic acid
Contains a molecular code that identifies which protein the cell will make
DNA
Terms for a series of 3 base pairs
Codon
Act of a single cell or group of cells to reproduce & multiply in number
Cell proliferation
2 general types of human cell and their cell division type
Somatic - mitosis
Genetic - meiosis
Subphases of mitosis
PMAT
Prophase
metaphase
anaphase
telophase
THE PORTION OF THE CELL
BETWEEN MITOTIC PHASE IS
CALLED
Interphase
CHROMOSOME IS
TRANSFORMED FROM A
STRUCTURE WITH TWO
CHROMATIDS
ATTACHED TO A
CENTROMERE TO A
STRUCTURE WITH FOUR
CHROMATIDS
ATTACHED TO A
CENTROMERE (DNA replication)
synthesis phase
THE PROCESS WHEREBY GENETIC CELLS UNDERGO REDUCTION DIVISION
Meiosis
Meiosis begins with _ chromosomes & _daughter cells
46
2
EACH GRANDAUGHTER CELLS
CONTAINS _ chromosomes
23
DURING THE SECOND DIVISION
SOME ___
IS EXCHANGED AMONG
CHROMATIDS
CHROMOSOMAL MATERIAL
The process in second division where some chromosomal material is exchanged among chromatids
Crossing over
RESULTS IN CHANGES IN GENETIC
CONSTITUTION AND CHANGES IN INHERITABLE
TRAITS)
Crossing over
phases in interphase
G1
Sphase
g2
phase where replication of DNA occurs and prepares for division of cell
interphase
a phase where the chromosomes and condensed and becoming visible
prophase
phase where chromosomes are lining up in the center of the cell
metaphase
phase where sister chromatids seperate and pull at the opposite poles of the cell
anaphase
phase where daughter cells are produced
telophase
a cell division where there is no dna replication occuring
meiosis
