Cancer cell & Diffusion and Osmosis

Question 1

What is cancer?

Answer 1

Cancer cells don’t spend enough time in interphase, and it divides much faster and more frequently than a normal cell.

Uncheck cell growth results in tumours

Cells grow, and divide or control and cause a group of disease called cancer

Question 2

What is a tumour?

Answer 2

Uncontrolled growth may create a rapidly growing mass of cells, and form a lump or tumor.

Cancer cells can break off of a tumour and travel to other parts of the body. ex it can grow in a new location which means a new tumour will form. This is called secondary tumor-> metastasis

Question 3

What are the two cancer tumors?

Answer 3

Benign tumor (Bad)
Malignant Tumor (Worse)

Question 4

Benign tumor?

Answer 4

(Bad)
Cell division is unchecked and at a moderate rate

Doesn’t spread around body

Doesn’t invade surrounding cell, but may push nearby cells out of the way

Relatively harmless, unless found in a part of the body where presses against other cells eg brain

Question 5

Malignant tumor?

Answer 5

Cell division is unchecked and moves very quickly, so little time in interphase

damages and destroys by invading surrounding cells

Can spread to other body parts and may interfere with the function of other cells, sometimes resulting in death, if tumour isn’t destroyed.

Question 6

Mutations?

Answer 6

When there’s random changes in cell DNA

Can result in death of cell, or allow it to continue to grow and divide.

If cell is abnormal can be cancerous

Question 7

What are the causes of cancer?

Answer 7

Carcinogens, environmental factors, includes smoking, radiation, viruses chemicals, and organic solvents.

Question 8

What are the four main cancer treatments?

Answer 8

1) surgery: physically, remove cancerous tissue
2) chemotherapy: using drugs to slow/stop cancer cells from dividing.
3) radiation: cancer cells are easily damaged by radiation, causing cancerous, daughter cells to stop dividing.
4) biophotonics: using light energy to diagnose, monitor, treat living cells and organisms

Question 9

Diffusion?

Answer 9

Is the movement of molecules or other particles from an area of high concentration to low concentration, until they are evenly distributed. Movement of chemicals during cell activity and growth is called diffusion

Question 10

Osmosis?

Answer 10

Involves the diffusion of water molecules across a membrane in response to concentration differences. Water always moves towards high concentration areas. and when water enters and leaves cell.