IB Biology Topic D2.1.17 Differences Between Tumours Revision Notes (HL)

IB Biology Topic D2.1.17 Differences Between Tumours Revision Notes (HL) | RevisionDojo

Written by official IB examiners

Tumours Differ in How Fast They Grow and Whether They Spread

Definition

Tumour

A tumour is an abnormal mass of cells resulting from uncontrolled cell division.

A tumour is a mass of cells that grows abnormally because cell division is no longer properly controlled.
Tumours are not all the same, and the differences between them decide how dangerous they are.
They differ in their growth rate, their ability to spread, and whether they cause cancer.

Note

This article covers how tumours differ, not what triggers them.
The mutations that cause cancer are covered separately in D2.1.16.

Benign Tumours Stay Put and Are Not Life-Threatening

Benign tumours grow slowly.
They stay localised at one site and do not invade nearby tissue.
They do not spread to other parts of the body.
They are often held in place by a capsule of fibrous tissue.
They are usually not life-threatening and can often be removed by surgery.
1. They can still cause harm if they press on a vital organ or nerve.

Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

Unlock the rest of this chapter with a free account

Tumours Differ in How Fast They Grow and Whether They Spread

Definition

Tumour

A tumour is an abnormal mass of cells resulting from uncontrolled cell division.

A tumour is a mass of cells that grows abnormally because cell division is no longer properly controlled.
Tumours are not all the same, and the differences between them decide how dangerous they are.
They differ in their growth rate, their ability to spread, and whether they cause cancer.

Note

This article covers how tumours differ, not what triggers them.
The mutations that cause cancer are covered separately in D2.1.16.

Benign Tumours Stay Put and Are Not Life-Threatening

Benign tumours grow slowly.
They stay localised at one site and do not invade nearby tissue.
They do not spread to other parts of the body.
They are often held in place by a capsule of fibrous tissue.
They are usually not life-threatening and can often be removed by surgery.
1. They can still cause harm if they press on a vital organ or nerve.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic D2.1.17: Differences Between Tumours Notes

Tumours Differ in How Fast They Grow and Whether They Spread

Benign Tumours Stay Put and Are Not Life-Threatening

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Tumours Differ in How Fast They Grow and Whether They Spread

Benign Tumours Stay Put and Are Not Life-Threatening

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics