the life of a cell named bob. growing up – the cell cycle

12
The life of a cell named Bob

Upload: kerry-webster

Post on 22-Dec-2015

218 views

Category:

Documents


1 download

TRANSCRIPT

The life of a cell named Bob

Growing up – The cell Cycle

The cell Cycle

• G1 Phase: During this period cells do most of there growing. The cell grows and makes new proteins and organelles.

• S Phase: Chromosomes (DNA) are replicated.• Once DNA replication is complete cell enters

next cycle• G2 phase: Shortest of the phases. Organelles

and molecules necessary for cell division are produced.

• M phase: Cell is now ready to divide

Cell Division- Mitosis and Cytokinesis

• What is the purpose of mitosis?• Mitosis is the process of forming identical daughter cells by

replicating and dividing the original chromosomes, in effect making a cellular xerox. Mitosis deals only with the segregation of the chromosomes and organelles into daughter cells.

• Cytokinesis is the actual division of the cells cytoplasm.• We divide Mitosis into how many phases?• 4• Prophase• Metaphase• Anaphase• Telophase

Prophase

• What happens in this phase?

Prophase -Cartoon

Metaphase

• What is happening in this phase?

Metaphase cartoon

Anaphase

• What happens in this phase?

Anaphase - Cartoon

Telophase

• Explain what happens in telophase?

Telophase