Ch. 11 Biology, Clinical Manifestations, and Tx of Cancer Flashcards
Which of the following is NOT a phase of progression of malignant tumors? Transformation Growth Local invasion Differentiation
Differentiation
Which of the following statements is TRUE? All neoplasms are cancerous. Cancer refers to a malignant tumor. Benign growths are cancerous. Malignant tumors have slow growth.
Cancer refers to a malignant tumor.
A person is diagnosed with a benign tumor. Which of the following is NOT associated with benign tumors?
They are well encapsulated.
They are well differentiated.
They retain no normal tissue.
They do not spread to regional lymph nodes.
They retain no normal tissue
A person has been diagnosed with a malignant tumor. Which of the following is a characteristic of this type of tumor?
It has a capsule.
It does not invade local tissues.
It is well differentiated.
It is able to spread far from the tissue of origin.
It is able to spread far from the tissue of origin.
An individual has been diagnosed with a cancer of the connective tissue. Which of the following is the name for this type of cancer? Sarcoma Leukemia Lymphoma Carcinoma
Sarcoma
An individual is diagnosed with a cancerous tumor that is very poorly differentiated. Which of the following terms describes these cells? Pleomorphic Anaplastic Immortal Independent
Anaplastic
A person has a tumor of the adrenal gland. Which of the following markers would be used to evaluate this tumor? PSA AFP Catecholamines DNA
Catecholamines
Which of the following genes in their normal state negatively regulate proliferation? Oncogenes Tumor-suppressor genes Proto-oncogenes Telomeres
Tumor-suppressor genes
Which of the following describes a mutation that occurs due to one or a few nucleotide base pairs? Point mutations Translocation Gene amplification Tumor-suppressor genes
Point mutations
A person has a viral infection and is worried about cancer being linked to this virus. Which of the following viruses is NOT linked to the development of cancer? Epstein-Barr virus Hepatitis B Hepatitis A Human papillomavirus
Hepatitis A
Which of the following is a TRUE statement regarding caretaker genes?
These genes encode proteins that repair damaged DNA.
Loss of function results in decreased mutation rates.
When these genes are expressed, DNA becomes less stable.
Mutations cause DNA base pair mismatches.
These genes encode proteins that repair damaged DNA
Which of the following is a TRUE statement regarding the staging of cancer?
Localized cancer is considered a high stage.
Benign tumors are stage 4.
Cancers that have spread regionally or distantly are stage 3 or 4.
Stage 1 has the worst prognosis.
Cancers that have spread regionally or distantly are stage 3 or 4
Which is NOT a type of gene misregulated in cancer?
Alterations in progrowth and antigrowth signals
Angiogenic factors
Telomerase activity
Mutation of oncogenes into normal genes
Mutation of oncogenes into normal genes
Which statement is TRUE about metastasis? Metastasis is highly efficient. Metastatic cells are heterogeneous. Metastatic cells suppress proteases. Metastatic cells undergo anoikis.
Metastatic cells are heterogeneous
Which statement characterizes radiation therapy?
It is used to kill cancer cells while minimizing damage to normal structures.
In order to kill cells with radiation, the cancer must not have good local delivery of oxygen.
Radiation blocks normal growth pathways in cells.
Radiation can cause reversible changes in normal tissues.
It is used to kill cancer cells while minimizing damage to normal structures