The diagram below represents the . cell cycle I D C A G B E F H

The cell cycle has main parts. 2 I D C A G B E F H

What is the longer part of the cell cycle called? Interphase I D C A G B E F H

What is the shorter part of the cell cycle called? M phase I D C A G B E F H

What is the first part of interphase called? G1 I D C A G B E F H

What is the last part of interphase called? G2 I D C A G B E F H

What is the longest part of interphase called? S phase I Replication #27 in SG D C A G B E F H

Which event marks the beginning of the M phase? Chromosomes form I D C A G B E F H

Which event marks the beginning of interphase? DNA loosens I D C A G B E F H

During M phase, the cell . divides INTERPHASE M PHASE GROWTH DNA LOOSENS CYTOPLASM DIVIDES INTERPHASE M PHASE NUCLEUS DIVIDES DNA REPLICATION CHROMOSOMES FORM

First the divides, followed by the . nucleus cytoplasm GROWTH DNA LOOSENS CYTOPLASM DIVIDES INTERPHASE M PHASE NUCLEUS DIVIDES DNA REPLICATION CHROMOSOMES FORM

During interphase, the cell for division. prepares GROWTH DNA LOOSENS CYTOPLASM DIVIDES INTERPHASE M PHASE NUCLEUS DIVIDES DNA REPLICATION CHROMOSOMES FORM

Interphase is than M phase... longer GROWTH DNA LOOSENS CYTOPLASM DIVIDES INTERPHASE M PHASE NUCLEUS DIVIDES DNA REPLICATION CHROMOSOMES FORM

…because occurs during interphase. DNA replication

Interphase is divided into parts. 3 GROWTH DNA LOOSENS G1 CYTOPLASM DIVIDES INTERPHASE M PHASE NUCLEUS DIVIDES S DNA REPLICATION G2 CHROMOSOMES FORM

During , the cell made during . G2 checks for errors replication DNA MOLECULE REPLICATED DNA

During , the cell and . G1 grows makes new organelles

During phase, the DNA is by . replicated enzymes

IDENTIFYING CELLS

Cell B is in . M phase A C B D

M phase cells have . fully formed chromosomes A C B D

Cells A, C, and D are in . interphase A C B D

Interphase cells have . no chromosomes A C B D

Cell D is in phase, because it is . fully grown A C B D

Cells C are in , because they are ( .) G1 small just divided A C B D

Cell A is at the of G2, because the DNA is to . end starting condense SPOTTED NUCLEUS A C B D

Interphase or M phase? Interphase Defense: No chromosomes

Part of Interphase: S phase Defense: Fully grown

Interphase or M phase? Interphase Defense: No chromosomes

Part of Interphase: End of G2 Defense: DNA starting to condense (SPOTTED NUCLEUS)

Interphase or M phase? M phase Defense: Fully-formed chromosomes

Interphase or M phase? Interphase Defense: No chromosomes

Part of Interphase: G1 Defense: Small (just divided)

Why are most of these cells in interphase? Interphase takes longer than M phase Replication

List the cells in order according to the cell cycle, starting with the G1 cells. B, C, A A D B C