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BSc (Hons) Biology Quiz sobre Cancer & Autoimmune Disease: Quiz the Fifth, criado por Sami-Jaine em 09-05-2013.

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Cancer & Autoimmune Disease: Quiz the Fifth

Cancer & Autoimmune Disease: Quiz the Fifth

Questão 1 de 10

1

Which of the following are considered the "rules of direct causal association"

Selecione uma ou mais das seguintes:

  • not all patients with the type of cancer in question have to have previously been infected with the virus

  • every cancer of this type carries the virus' genetic information in every malignant cell

  • The virus itself, or individual virus genes can often "transform" the growth of normal cells in cell culture

  • all patients with the type of cancer in question have previously infected with the virus

Explicação

Questão 2 de 10

1

Which of the following contribute to the breakdown of tolerance?

Selecione uma das seguintes:

  • Failure to delete auto-reactive lymphocytes (peripheral and central tolerance failure)

  • Molecular mimicry

  • Abnormal presentation of self antigens

  • Epitope spreading

  • Polyclonal lymphocyte activation

  • All of the above

  • None of the above. This is a trick question.

Explicação

Questão 3 de 10

1

Cigarette smoke is an irritant to the respiratory epithelium. It paralyses the sensitive cilia on the columnar cells and so the cells are (reversibly) replaced by the more robust squamous cells. This is an example of...

Selecione uma das seguintes:

  • metaplasia

  • atrophy

  • dysplasia

Explicação

Questão 4 de 10

1

Dysplasia is the (reversible) state where a cell can change in which of the following ways...

Selecione uma ou mais das seguintes:

  • cell type

  • size

  • shape

  • organisation

  • colour

Explicação

Questão 5 de 10

1

Dysplasia is considered...

Selecione uma das seguintes:

  • cancerous

  • benign

  • precancerous

Explicação

Questão 6 de 10

1

Which of the following are true?

Selecione uma ou mais das seguintes:

  • Carcinomas are tumours of the epithelium

  • Lymphomas, leukaemias and myelomas are haematological tumours

  • Benign tumours can be fatal

  • Sarcomas are tumours of muscle, cartilage, bone etc

  • Benign tumours are still functional tissues

Explicação

Questão 7 de 10

1

cancers arise in single cells. this makes them clonal in origin.
because all the cells in the cancer arose from the proliferation of this one cell, cancers are said to be

Selecione uma das seguintes:

  • monoclonal

  • polyclonal

Explicação

Questão 8 de 10

1

Is a malignant cell able to perform specialist tasks?

Selecione uma das seguintes:

  • Yes

  • No

Explicação

Questão 9 de 10

1

Distant growths originating from one tumour are called metastases?

Selecione uma das seguintes:

  • Yes

  • No

Explicação

Questão 10 de 10

1

Which of the following have an influence upon cancer development

Selecione uma ou mais das seguintes:

  • Geographical location

  • Dietary fats, vitamins an fibres

  • Smoking, sex hormones, age, family history

Explicação

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