Important concept
G1 phase: Metabolic changes prepare the cell for
division. At a certain point - the restriction point - the cell is committed to
division and moves into the S phase.
S phase: DNA synthesis replicates the genetic
material. Each chromosome now consists of two sister chromatids.
G2 phase: Metabolic changes assemble the
cytoplasmic materials necessary for mitosis and cytokinesis.
M phase: A nuclear division (mitosis) followed
by a cell division (cytokinesis).
The period between mitotic
divisions - that is, G1, S and G2 - is known as interphase.
Which
step of the cell cycle do cells spends a majority of their time?
a) Interphase
b) Cytokinesis
c) Mitosis
d) Interphase
Which of the following is not a part of interphase?
a) G2
b) M
c) G1
d) S
What is the first phase of Mitosis?
a) Prophase
b) Metaphase
c) Anaphase
d) Telophase
…………is a process where a single cell divides into two identical daughter cells (cell division).
a) Mitosis
b) Meiosis
c) both a and b
d) none of these
Mitosis
occurs in:
a) somatic cell only
b) reproductive cell only
c) both a and b
d) none of these
