3.8.2.3 Gene Expression and Cancer (Unit 8 Gene Expression) Flashcards
Epigenetics has been associated with what type of disease
cancer
All tumours are cancerous - true or false?
false
What is a tumour?
Mass of cell caused by uncontrolled cell division
Cancer is…?
abnormal mass of cells that invades neighbouring tissues or can break away forming secondary tumours
Two types of tumours are?
benign and malignant
Which tumour is cancerous?
malignant
Which tumour does not invade neighbouring cells?
benign
How do cancers spread?
blood stream or via lymphatic system
Name the two genes that control cell division
Proto-oncogenes and tumour suppressor genes
What is the function of a proto-oncogene?
stimulate cell division
what is the function of a tumour suppressor gene?
slow down cell division
what would happen if there was a mutation in a proto-oncogene?
turn into oncogene - uncontrolled cell division
what would happen if there was a mutation in a tumour suppressor gene?
uncontrolled cell division
Mutations in genes that control cell division cause…
cancer
Which type of tumour grows more slowly?
benign
How might tumour cells look compared to normal cells?
different shape
larger/darker nucleus
divide more rapidly