Review Mitosis/Meiosis; Cell Growth & Regulation

WARM UP (left side) 5/9/16
1. The repeating sequence of cellular growth and division is called the ____ _____.
2. Mitosis results in two genetically _______ cells.
3. Mitosis occurs in what type of cells?
4. Meiosis results in four genetically _______ cells.
5. Meiosis occurs in what type of cells?

Then make sure you have this down for processing:

Announcements:
-Midterm Progress Reports due tomorrow
-This Wednesday 5/11 Mental Health Awareness Assembly; all freshman will attend with their 6th period class
-We will finish this Unit by next Thursday, 5/19
-Unit study guide on Monday 5/23; test/notebooks on 5/25
-Science News: Transit of Mercury today

10.3 Regulation of Cell Growth & Division: Your body grows when more cells are added to the tissues and organs that make up the body. To stay healthy, cells continue to divide as needed to replace or renew tissues. 

Learning Objective: I can describe how the cell cycle is regulated and the consequences of uncontrolled cell growth. 

Controls
-Cell growth and division depend on internal protein signals and external environmental signals.

Checkpoints
-Feedback signals at key checkpoints in the cell cycle can delay or trigger the next phase of the cell cycle. 

Cancer
-Damage to a cell's DNA can cause a cell to respond improperly to signals and checkpoints, resulting in an uncontrolled cell cycle.

-Uncontrolled cell growth and division can result in masses of cells that invade and destroy healthy tissues, known as cancer. 

-A defective cell divides and produces more defective cells, and can eventually form a mass called a tumor. A tumor can be tested in a process called a biopsy. A benign tumor does not spread to other parts of the body and can often be removed by surgery. A malignant tumor invades and destroys nearby healthy tissues and organs.

-Cancer treatments: drugs, chemotherapy, surgery, or radiation therapy.

-Cancer prevention: don't use tobacco, eat a healthy diet, maintain healthy weight, be physically active, protect yourself from the sun, & get regular medical care.

-Each year globally, about 14 million people learn they have cancer, and 8 million people die from the disease. Research suggests that one-third of cancer deaths can be prevented, but sometimes services and technologies are not widely available, especially in low and middle-income countries.

-This year about 564,800 Americans are expected to die of cancer

Watch PBS - Cancer: The Emperor of All Maladies  
 Intro(5 min)

Left side processing: Write at least 4 sentences about your personal connection with cancer. If you don't know anyone affected, talk about strategies for preventing cancer yourself.