Chapter 12: Cell Cycle

Question 1

omnis cellula e cellula

Answer 1

every cell from a cell; Virchow

Question 2

cell division

Answer 2

reproduction of cells; used in renewal/repair of grown multicellular eukaryotes

Question 3

cell cycle

Answer 3

life of a cell from time its first formed during division until its own division

Question 4

most cell division results in ___

Answer 4

genetically identical daughter cells

Question 5

genome

Answer 5

genetic information/DNA; typical human DNA = 250,000x greater than cell’s diameter

Question 6

chromosomes

Answer 6

tightly coiled DNA; has 2 sister chromatids

Question 7

chromatin

Answer 7

DNA and proteins that are the building material of chromosomes; long and thin, single stranded, cell not dividing

Question 8

somatic cells

Answer 8

body cells, mitosis; each contain 46 chromosomes (2 sets of 23)

Question 9

gametes

Answer 9

reproductive cells; sperm and egg; 1 set, half as many chromosomes as somatic cells

Question 10

sister chromatids

Answer 10

joined copies of original chromosome; contain identical DNA molecule, attached by protein complexes called cohesions (aka sister chromatid cohesions)

Question 11

centromere

Answer 11

region of chromosomal DNA where chromatid is attached most closely to sister chromatid