Biology: Tumour Formation and Malignancy

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RapturousSulfur
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7 Questions

What happens to cells when a tumour forms?

They divide and multiply uncontrollably

What evidence in Figure 1 suggests that the lung tumour is malignant?

Irregular shape and invasive growth

Why might a person with certain types of cancer experience symptoms like tiredness, frequent infections, and uncontrollable bleeding?

Low numbers of blood components causing poor immunity and abnormal bleeding

What is the purpose of a blood transfusion?

To increase the number of red blood cells in the patient

Why is it dangerous for a patient with blood group A to receive red blood cells from a donor with blood group B?

The antibodies in blood group A will attack the red blood cells from blood group B

Why can blood group O red blood cells be given to patients with any blood group?

Blood group O has no antibodies that would attack other blood groups

Which risk associated with blood transfusions has the lowest probability of occurring?

Hepatitis C infection

Study Notes

Tumour Formation

  • When a tumour forms, cells divide uncontrollably and accumulate, leading to a mass of abnormal cells.

Identifying Malignant Tumours

  • Figure 1 suggests the lung tumour is malignant due to the presence of abnormal cell shapes, sizes, and nuclei.

Cancer Symptoms

  • Cancer can cause symptoms like tiredness, frequent infections, and uncontrollable bleeding due to the suppression of the immune system and destruction of healthy blood cells.

Blood Transfusions

  • The purpose of a blood transfusion is to transfer blood or blood products from a donor to a patient to replace blood lost due to surgery, injury, or disease.

Blood Group Compatibility

  • It is dangerous for a patient with blood group A to receive red blood cells from a donor with blood group B because the patient's immune system will react to the foreign antigens, leading to a severe reaction.

Universal Donors

  • Blood group O red blood cells can be given to patients with any blood group because they lack A and B antigens, reducing the risk of an immune response.

Blood Transfusion Risks

  • The risk with the lowest probability of occurring during blood transfusions is a viral transmission, such as HIV or hepatitis.

This quiz focuses on understanding tumour formation and malignancy, with a specific emphasis on identifying evidence of malignancy in a given scenario. The questions prompt the test-taker to describe the cellular changes in tumour formation and analyze Figure 1 to identify malignant characteristics in a lung tumour.

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