Biology 2.3.5

Question 1

Cells in the Body Divide by ___ to Produce ___ Cells. This is Essential for Growth, & to Replace Cells that are Lost or Damaged.

Answer 1

Mitosis, More.

Question 2

How are Tumours Caused?

Answer 2

Tumours are Caused as a Result of Changes in the DNA of Cells that lead to Uncontrolled & Abnormal Growth & Division.

Question 3

True or False: all Tumours are Considered Cancerous.

Answer 3

False.

Question 4

Not all Tumours are Considered ___.

Answer 4

Cancerous.

Question 5

What are the 2 Types of Tumours? (2)

Answer 5

-Benign.

-Malignant.

Question 6

What are ‘Benign Tumours’?

Answer 6

Benign Tumours are Growths of Abnormal Cells which are Contained in 1 Area, usually within a Membrane.

Question 7

What are ‘Malignant Tumours’?

Answer 7

Malignant Tumour Cells are Cancers- the Cells Invade Neighbouring Tissues, & Spread to Different parts of the Body via the Blood & Lymphatic System, where they form Secondary Tumours.

Question 8

Why are Malignant Tumours Dangerous?

Answer 8

Because they can Spread & Form Secondary Tumours that can Disrupt the Function of Organs. This can lead to Death.