Tag: cancer - causes, signs and diagnosis

Questions Related to cancer - causes, signs and diagnosis

Paclitaxel is a drug that stabilizes microtubules, preventing their breakdown.
Why would this drug be useful for cancer therapy?

cancer - causes, signs and diagnosis human health and diseases zoology

  1. The cell membrane is made largely of microtubules and cannot divide when they are stabilized.

  2. Breakdown of microtubules stimulates the start of cell division.

  3. Presence of microtubules increases density-dependent inhibition of cancer cells.

  4. Movement and breakdown of the cytoskeleton are essential to completion of mitosis.

Show answer
Correct Option: D
Explanation:

Paclitaxel is a drug used in the treatment of cancer. It is a cytoskeletal drug that prevents the disssembly of microtubles that are formed during cell division,that is it stabilizes the microtubules, therefore the chromosome separation does not occur during Anaphase. If this phase is prolonged then the cell either undergoes apoptosis or it reverts back to G$ _0$ phase.

So, the correct answer is 'Movement and breakdown of the cytoskeleton are essential to completion of mitosis'




Which of the following is not used to treat cancer?

cancer - causes, signs and diagnosis human health and diseases zoology

  1. $^{131}$I

  2. $^{60}$Co

  3. Taxol

  4. Streptokinase

Show answer
Correct Option: D
Explanation:
  • Streptokinase (SK) is a thrombolytic medication and enzyme. 
  • As a medication, it is used to break down clots in some cases of myocardial infarction (heart attack), pulmonary embolism, and arterial thromboembolism.
  • Hence Streptokinase is not used to treat cancer.
  • So, the correct answer is 'Streptokinase'.

Drugs vincristin and vinblastin used in cancer therapy are obtained 

cancer - causes, signs and diagnosis human health and diseases zoology

  1. Rauwolfia serpentina

  2. Atropa serpentina

  3. Catharanthus roseus

  4. Withania sommifera

Show answer
Correct Option: C
Explanation:

Catharanthus roseus, commonly known as the rosy periwinkle is a species of flowering plant belonging to family Apocynaceae. It is native and endemic to Madagascar but grown elsewhere as an ornamental and medicinal plant. It is a source of the drugs vincristine and vinblastine which are used in the treatment of cancer. 

So, the correct answer is 'Catharanthus roseus'.

Which of the following is used in the treatment of cancer

cancer - causes, signs and diagnosis human health and diseases zoology

  1. Interferon gamma

  2. Interferon alpha

  3. Inrerferon beta

  4. Reo-pro

Show answer
Correct Option: B
Explanation:
  • Interferon alpha is a biological therapy drug.
  •  It may be used to treat kidney cancer, melanoma, carcinoid tumours and some types of lymphoma and leukaemia. Interferon alpha is often called interferon.
  •  It is usually is used in the treatment of cancer given as an injection under the skin (subcutaneously). 
  • Hence, Interferon alpha is used in the treatment of cancer.
  • So, the correct answer is 'Interferon alpha'.

Which of the following is used for treatment of thyroid cancer?

cancer - causes, signs and diagnosis human health and diseases zoology

  1. U-238

  2. Ra-224

  3. C-14

  4. I-131

Show answer
Correct Option: D
Explanation:

Iodine-131 (I-131) is an important radioisotope of iodine. Iodine-131, in higher doses, is used for ablation (surgical removal) of remnant thyroid tissue following a complete thyroidectomy (removal of the thyroid gland) to treat thyroid cancer. I-131 is also used in nuclear energy, medical diagnostic and treatment procedures, and natural gas production.

So, the correct answer is 'I-131'.

'Superbug' a biotechnological feat is useful in the _____________.

cancer - causes, signs and diagnosis human health and diseases zoology

  1. Treatment of Cancer

  2. Cleaning oil Spillage

  3. Espionage

  4. Biodegradation of plastics

Show answer
Correct Option: A

A recently discovered anti-cancer drug is obtained from ____________.

cancer - causes, signs and diagnosis human health and diseases zoology

  1. Taxus

  2. Tagetes

  3. Tamaric

  4. Thea

Show answer
Correct Option: A

Treatment of cancer can be done by 

cancer - causes, signs and diagnosis human health and diseases zoology

  1. Radiation therapy

  2. Surgery

  3. Immunotherapy

  4. All the above

Show answer
Correct Option: D
Explanation:

Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. Treatment of cancer includes - 

  • Radiation therapy - It involves the use of ionizing radiation in an attempt to either cure or improve symptoms. It works by damaging the DNA of cancerous tissue.
  • Surgery - It is the primary method of treatment for most isolated, solid cancers and may play a role in prolongation of survival. In localized cancer, surgery typically attempts to remove the entire mass of tissue.
  • Immunotherapy - It plays a role in stimulating or helping the immune system to fight cancer.
So, the correct answer is 'All the above'.

Which of the following will be curable in next two decades?

cancer - causes, signs and diagnosis human health and diseases zoology

  1. Cancer

  2. Poliomyelitis

  3. Tuberculosis

  4. None of the above

Show answer
Correct Option: A
Explanation:

There are already vaccines available for Polio and tuberculosis.
In next two decades, cancer will be curable.
Thus, the correct answer is option (A), 'Cancer'.

Cancer treatment is a difficult process. Which of the following is a reason for it?

cancer - causes, signs and diagnosis human health and diseases zoology

  1. Cancer call can undergo uncontrolled division.

  2. Cancer cells adapt and evolve in response to treatment.

  3. Cancer cells become unresponsive to growth signals.

  4. All of these

Show answer
Correct Option: A
Explanation:
Cancer cells divide uncontrollably and exhibit properties such as loss of contact inhibition and loss of anchorage dependence which can also make them break away from the original site and travel to distant places in the body where they can begin forming a new cancer. This property is called as metastasis. Hence, treatment of cancer is a difficult process. Cancer cells become unresponsive to anti-growth signals which makes them grow uncontrollably.
So, the correct answer is, 'Cancer cell can undergo uncontroled division'.