Where do Cells Come From?http://www.youtube.com/watch?v=t3JO1f1wJZ8

In the 16th and 17th Centuries people believed in… Spontaneous Generation; that life would come from non-living matter. No Scientific evidence.

We will be looking at cells in the process of

reproducing to determine where cells originate (come from).

Cell Theory – cells come from other

cells.

What would happen to a species if it could no

longer reproduce?

Where do cells come from?

All Organisms begin as one cell. Every cell contains organelles that have specific functions to carry on all of life’s processes. If reproducing is required for a species to continue, then cells must reproduce.

How do cells reproduce?In unicellular organisms, the cell divides to make new versions of itself.

IN MULTICELLULAR ORGANISMS, THE CELLS

DIVIDE AND THEN SPECIALIZE TO BECOME DIFFERENT STRUCTURES SUCH AS HEART, BRAIN,

LUNGS, ETC.

heart bone blood

Everyday your skin cells die and replace themselves by

reproducing new ones. They do this by division called

MITOSIS.Mitosis occurs in multiple stages or

phases.

We will observe Onion Root slides to observe

the cells that are going through

different stages of the reproductive process

called mitosis.

Search, patience, locate, focus, LOOK!

Now, we will begin writing your Scientific Investigation for this lab in your notebook.Turn to page 361 in your Textbook.

And begin writing your Title followed by the eight (8) steps for Scientific Investigation.

/ /2014 Spec Ed Modification (cut & paste)

Title:__________________________________________

1) Problem:

2) Hypothesis:

3) Procedure:

4) Materials:

5) Data: 1.

6) Results:

7) Conclusion: (answer all questions from Problem)

8) Application: