Cancer Genetics

Description: Cancer Genetics Quiz
Number of Questions: 15
Created by:
Tags: cancer genetics mutations oncogenes tumor suppressor genes
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Which of the following is a hallmark of cancer cells?

  1. Uncontrolled cell division

  2. Differentiation

  3. Apoptosis

  4. Contact inhibition


Correct Option: A
Explanation:

Cancer cells exhibit uncontrolled cell division, leading to the formation of tumors.

What type of genetic alteration can lead to the activation of oncogenes?

  1. Gene amplification

  2. Gene deletion

  3. Point mutation

  4. Translocation


Correct Option: C
Explanation:

Point mutations can activate oncogenes by introducing changes in the protein structure or function.

Which tumor suppressor gene is commonly mutated in colorectal cancer?

  1. BRCA1

  2. TP53

  3. APC

  4. RB1


Correct Option: C
Explanation:

APC (Adenomatous Polyposis Coli) is a tumor suppressor gene frequently mutated in colorectal cancer.

What is the role of DNA repair mechanisms in cancer prevention?

  1. Correcting errors during DNA replication

  2. Promoting cell division

  3. Inducing apoptosis

  4. Activating oncogenes


Correct Option: A
Explanation:

DNA repair mechanisms play a crucial role in preventing cancer by correcting errors that may lead to mutations.

Which of the following is an example of a hereditary cancer syndrome?

  1. Li-Fraumeni syndrome

  2. Down syndrome

  3. Turner syndrome

  4. Klinefelter syndrome


Correct Option: A
Explanation:

Li-Fraumeni syndrome is an inherited cancer predisposition syndrome associated with an increased risk of various types of cancer.

What is the primary function of tumor suppressor genes?

  1. Promoting cell division

  2. Inducing apoptosis

  3. Activating oncogenes

  4. Repairing DNA damage


Correct Option: B
Explanation:

Tumor suppressor genes play a critical role in preventing cancer by inducing apoptosis (programmed cell death) in damaged or abnormal cells.

Which of the following is a common type of chromosomal rearrangement observed in cancer cells?

  1. Translocation

  2. Inversion

  3. Deletion

  4. Duplication


Correct Option: A
Explanation:

Translocation, the exchange of genetic material between two chromosomes, is a common chromosomal rearrangement in cancer cells.

What is the term for the process by which normal cells transform into cancer cells?

  1. Carcinogenesis

  2. Metastasis

  3. Differentiation

  4. Apoptosis


Correct Option: A
Explanation:

Carcinogenesis refers to the process by which normal cells undergo a series of genetic and molecular changes, leading to the development of cancer.

Which of the following is a type of cancer that originates from uncontrolled cell division in the blood-forming tissues?

  1. Leukemia

  2. Sarcoma

  3. Carcinoma

  4. Lymphoma


Correct Option: A
Explanation:

Leukemia is a type of cancer that arises from the uncontrolled proliferation of blood cells in the bone marrow and lymphatic system.

What is the name of the protein encoded by the BRCA1 gene, which is associated with an increased risk of breast and ovarian cancer?

  1. p53

  2. BRCA2

  3. HER2

  4. ER


Correct Option:
Explanation:

The BRCA1 gene encodes a protein involved in DNA repair and maintaining genomic stability.

Which type of cancer is characterized by the uncontrolled growth of cells in the connective tissues, such as bone, cartilage, and muscle?

  1. Carcinoma

  2. Sarcoma

  3. Leukemia

  4. Lymphoma


Correct Option: B
Explanation:

Sarcomas are cancers that originate from the connective tissues of the body.

What is the term for the process by which cancer cells spread from the primary tumor to other parts of the body?

  1. Metastasis

  2. Carcinogenesis

  3. Differentiation

  4. Apoptosis


Correct Option: A
Explanation:

Metastasis is the process by which cancer cells spread from the primary tumor to other parts of the body through the bloodstream or lymphatic system.

Which of the following is an example of a targeted therapy used in cancer treatment?

  1. Chemotherapy

  2. Radiation therapy

  3. Immunotherapy

  4. Hormone therapy


Correct Option: D
Explanation:

Hormone therapy is a targeted therapy that involves the use of hormones to block the growth of hormone-sensitive cancers.

What is the name of the gene that encodes the p53 protein, a key tumor suppressor involved in cell cycle regulation and apoptosis?

  1. BRCA1

  2. TP53

  3. APC

  4. RB1


Correct Option: B
Explanation:

The TP53 gene encodes the p53 protein, which plays a crucial role in preventing cancer by regulating cell cycle progression and inducing apoptosis.

Which type of cancer is characterized by the uncontrolled growth of cells in the epithelial tissues, such as the skin, lungs, and digestive tract?

  1. Carcinoma

  2. Sarcoma

  3. Leukemia

  4. Lymphoma


Correct Option: A
Explanation:

Carcinomas are the most common type of cancer and arise from epithelial tissues.

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