10.3 Regulating the Cell Cycle. 2 Which of the cells depicted in the line graph below are most likely cancerous?

Slides:

Advertisements

Similar presentations

10.3 Workbook Corrections.

Advertisements

Mitosis & Cancer: When Making New Cells Goes Terribly Wrong!

What is Cancer? How it occurs and cell cycle regulation.

+ How is the cell cycle regulated? Sections 8.8 and 8.9.

10.3 Regulating the Cell Cycle

 Cell division out of control means cancer.  Programmed cell death is a necessary process in living organisms because it makes room for new cells.

Regulating the Cell Cycle

Cell Division Stimulants DNA overload Exchange of material- ratio of surface area to volume.

10-3: Regulating the cell cycle. Cardiac cells Small intestine Smooth muscle Nerve cell: brain Cardiac: cannot divide Smooth muscle: can divide Intestine:

Cell Cycle and Cancer.

Section 10.3 (Pg ): Regulating the Cell Cycle

Regulating the Cell Cycle Controls on Cell Division If we look at cells dividing in a petri dish we can see that they will divide until they cover.

Regulating the Cell Cycle Chapter Controls on Cell Division When there is an injury such as a cut in the skin or break in a bone, the cells at the.

Knowing When to Stop Suppose you had a paper cut on your finger. Although the cut may have bled and stung a little, after a few days, it will have disappeared,

Regulating the Cell Cycle and Cancer Ms. Cohen. How carefully do cells divide? Quite controlled Some cells divide at different rates –Cells that divide.

Section 6-2 The Cell Cycle. The Cell Cycle Describes the Life of a Eukaryotic Cell Cell division in eukaryotic cells is more complex than in prokaryotic.

The Cell Cycle and Cancer. The Cell Cycle Cells go through a series of stages through their life These series of stages is called the cell cycle Each.

Cell Growth and DivisionSection 3 Section 3: Regulation Preview Bellringer Key Ideas Controls Checkpoints Cancer Summary.

Unit 4 --Bellwork #3 1. Explain at least two ways in which mitosis and meiosis are different. 2. Why do sperm and egg have only 23 chromosomes? 3. The.

Cell Cycle Regulation. The Cell Cycle What can be learned from this experiment? There are different signals (proteins) present that aid in the progression.

5.3 Regulation of the Cell Cycle KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

Cell Cycle Control and Cancer What happens when things go wrong?

Homework: Chapter 10 Test in the Online Textbook. Due 1/19. Warm Up: Do you believe that your cells belong to you once they are outside of your body? Why.

Cell Cycle CANCER Apoptosis is programmed cell death. – a normal feature of healthy organisms – caused by a cell’s production of self-destructive enzymes.

CANCER  how does it happen?. Checkpoints  Where a cell Normally checks its self for a mutation as it goes through cell cycle.

Chapter 8 (Part 1): Mitosis Cell Cycle Regulation & Cancer (Part 1) Pgs Objective: I can describe and explain how cancer involves a.

Regulating The Cell Cycle. Warm Up – The Cell Cycle The cell spends 80% of the time in _______________ and 20% of the time in ________________ What are.

Ch.10-3 Regulating the Cell Cycle. POINT > Identify 3 reasons cells divide POINT > Describe the role of cyclins in cell division POINT > Identify other.

10-3 Regulating the Cell Cycle How is the cell regulated? How are cancer cells different from other cells?

Chapter 10 Section 3: Regulating the Cell Cycle.

Cell Division. Chromosomes  Are made of DNA  Each chromosome consists of sister chromatids attached at a centromere.

The Cell Cycle and Cancer The Cell Cycle Cytokinesis

Regulating the cell cycle

Regulating The Cell Cycle

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

10-3 Regulating the Cell Cycle

Regulation of the Cell Cycle & Cancer

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

Losing Control of the Cell cycle

Regulation of Cell Cycle

10-3 Regulating the Cell Cycle

Regulating the Cell Cycle and Cancer

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

The Cell Cycle Ch. 10.

Interest Grabber Answers

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

Chapter 10.3 Section 3 Regulating The Cell Cycle Objectives

Regulation Contact Inhibition Signals cells to stop dividing

1. Which letter represents mitosis and cytokinesis?

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

Cell Division Cell Cycle and Mitosis.

Chapter 6 Section 2 The Cell Cycle Objectives

Regulating the Cell Cycle

CH 10-3 REGULATING THE CELL CYCLE

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

10.3 Regulating the Cell Cycle

Controls of Cell Cycle.

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

Copyright Pearson Prentice Hall

Ch.10-3 Regulating the Cell Cycle

Cell Division and Mitosis

Regulation of the Cell Cycle

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

Regulating the Cell Cycle

KEY CONCEPT Cell cycle regulation is necessary for healthy growth.

Presentation transcript:

10.3 Regulating the Cell Cycle

2 Which of the cells depicted in the line graph below are most likely cancerous?

II. Control of Cell Cycle A. How do cells know when to divide? 1. Cells have proteins called cyclins that regulate timing of cell cycle B. Cell Cycle Regulators: 1. Internal Regulators a. Correct # of chromosomes b. Spindle fibers are attached to all chromosomes (phase?) 2. External Regulators a. cut that needs healing b. neighbors C. Cell cycle has checkpoints at which protein signals can: 1. Trigger the next phase, or 2. Delay next phase 3. Stop division (the most important checkpoint, G 1 )

Cancer: When control is lost Cancer a. Uncontrolled cell growth b. Disorder of cell division c. Cells keep on dividing, creating tumors d. Due to mutations in genes e. Causes of mutations can be chemicals, radiation & viruses f. Most cancers require many mutations before they begin