Launch

Get out the following four assignments for your homework packet -Review Sheet from Monday -Enzyme Letter from Tuesday -Enzyme Worksheet from Tuesday -Cell cycle worksheet from Thursday

If time answer the following question:What are the three main stages of the cell cycle

and what happens in each?

MITOSISThe process a cell uses to copy its

DNA and create two identical daughter cells

Pre-Mitosis: INTERPHASE

This is where the cell spends most of its time

Cell grows, gain nutrients, copies DNA

DNA is “just chillin” in the nucleus

Interphase = In-between

Step 1: PROPHASE

DNA condenses into chromosomes

Chromosomes pair up with their exact copy

Nucleus breaks down

Prophase = Pairs

Step 2: METAPHASE

Chromosomes line up in the middle of the cell

Chromosomes are attached to fibers that stretch from the poles to the middle of the cell

Metaphase = Middle

Step 3: ANAPHASE

The stage when chromosomes separate

Each singular chromosome pulled to opposite sides of the cell by fibers in the cell

Anaphase = Apart

Step 4: TELOPHASE

Cell membrane pinches off to form two cells

Nuclear envelope reforms around DNA

Chromosomes uncondense

Telophase = Two Cells

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What stage is it?

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