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Biology Test

Description: This test is based on certain topics from bilogy which are highly beneficial for learning aspiranats.
Number of Questions: 15
Created by:
Tags: Lung surfactant Dipalmitoyllecithin Respiratory Distress Syndrome etc Respiratory Disorders Disorders of Respiratory System Tools of Genetic Engineeering Genetics and Evolution Tools of Genetic Engineering AID and Cancer -- Causes and Control AIDS Cancer
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Dipalmitoyl-lecithin (DPL) is a prominent lung surfactant, the deficiency of which causes respiratory distress syndrome. Chemically DPL is

  1. cerebroside

  2. ganglioside

  3. phospholipid

  4. lipoprotein


Correct Option: C
Explanation:

Phospholipids are phosphorus-containing lipids, such as lecithin and cephalin that are composed mainly of fatty acids, and a phosphate group. Chemically DPL is phospholipid. Phospholipid is the main component of biological membranes.

Mrs. Bansal is pregnant and has undergone the medical test for estimating L: S ratio of amniotic fluid. The significance of this estimation lies in evaluating

  1. fetal heart rate

  2. fetal lung maturity

  3. fetal maturity

  4. fetal head size


Correct Option: B
Explanation:

The L : S ratio was the first test to assess fetal lung maturity. Sufficient amniotic fluid is required for accurate assessment of fetal lung maturity. It is regarded as the best single assessment of fetal lung maturity.

Aman is suffering from progressive prostate cancer. Which of the following symptoms is rarely associated with this type of cancer?

  1. Symptomatic anaemia

  2. Haematemesis

  3. Acute urinary retention

  4. Sexual dysfunction


Correct Option: B
Explanation:

Haematemesis is vomiting of blood, either bright or altered blood due to the action of acid on the blood. It is not seen in the sufferers of progressive prostate cancer.

Which of the following is not a side effect of hormone treatment?

  1. Osteoporosis

  2. Hot flashes

  3. Loss of libido

  4. Myelosuppression


Correct Option: D
Explanation:

Myelosuppression is a medical condition where the bone marrow activity is decreased, resulting in fewer red blood cells. It is a major side effect of chemotherapy.

Which of the following statements regarding the treatment of hormone refractory prostate cancer in males is correct?

  1. Docetaxel and prednisolone have been shown to increase median survival of the prostrate patients by 3 to 4 months .

  2. Mitoxantrone has been observed to increase median survival of the patient approximately by 1 to 2 months.

  3. Withdrawing anti-androgen treatment gives no benefits to the sufferers of prostate cancer .

  4. Intravenous radio-isotope therapy has been observed to increase median survival of the patient by 6 to 8months .


Correct Option: A
Explanation:

It is correct. In the treatment of hormone refractory prostate cancer, docetaxel and prednisolone have been shown to increase median survival of the prostrate patients by 3 to 4 months .

Risk factors for ovarian cancer in females include

  1. young age

  2. nulliparity

  3. multiple pregnancies

  4. prolonged use of oral contraceptives


Correct Option: B
Explanation:

Nulliparity is defined as the state of not bearing offspring. The risk factors for ovarian cancer include increased age and nulliparity of the females.

In metastatic epithelial ovarian cancer

  1. ascites usually responds well to diuretics

  2. frequent bowel obstruction is managed using subcutaneous medication

  3. opioid analgesics should be avoided

  4. lymphoedema is rare


Correct Option: B
Explanation:

Bowel obstruction is an obstruction of the intestines, preventing the normal transit of the products of digestion. It is common and is usually managed medically using subcutaneous medication given via a syringe driver.

Which of the following can be excluded from the category of effective treatment of breathlessness associated with lung cancer?

  1. Nebulised opioid

  2. Pleurodesis

  3. Endobronchial stenting

  4. Regular doses of short-acting oral morphine


Correct Option: A
Explanation:

Breathlessness is a common problem for those with lung cancer. Nebulised opioids have been found to be no more effective than inhaled saline.

Which of the following statements regarding the management of prostate cancer limited to the prostate gland only is correct?

  1. Active surveillance is a genuine approach.

  2. Prostatectomy has been observed to be superior over radiotherapy.

  3. Radiotherapy causes impotence in about 75% of patients.

  4. Prostatectomy leads to long term incontinence in about 25 to 30% of patients.


Correct Option: A
Explanation:

In management of prostate cancer which is confined to the prostate gland, active surveillance is a genuine approach, as are prostatectomy and radiotherapy.

Which of the following statements regarding the treatment of relapsed epithelial ovarian cancer in females is correct?

  1. Platinum chemotherapy is most suitable for patients who relapse less than 6 months after completion of the therapy.

  2. The response rate to platinum chemotherapy is approximately 50 to 60% in those who relapse more than 2 years after completion of platinum based first line chemotherapy.

  3. Most patients are cured with further chemotherapy.

  4. Many of the sufferers can be cured with further surgery .


Correct Option: B
Explanation:

This is a correct statement . The response rate to platinum chemotherapy is approximately 50 to 60% in those who relapse more than 2 years after completion of platinum based first line chemotherapy.

Which of the following symptoms is not noticed during ovarian cancer in females?

  1. Abdominal pain and bloating

  2. Loss of appetite

  3. Back pain

  4. Chest pain


Correct Option: D
Explanation:

Chest pain can happen in adults for a variety of reasons. Chest pain is associtaed mainly with heart attack, angina, heartburn, pulmonary embolism etc but it is not observed in ovarian cancers.

Mesothelioma is an aggressive cancer that destroys the membranes of the lungs. Which of the following statements is true regarding mesothelioma?

  1. Incidence of mesothelioma is decreasing as a consequence of the ban on use of asbestos.

  2. It is more common in females.

  3. All deaths due to mesothelioma should be reported to the coroner.

  4. Radical surgery is the best treatment of this disease.


Correct Option: C
Explanation:

As mesothelioma is often associated to the exposure to asbestos, if a person dies from it then it is the duty of a coroner to find out if the death was due to the deceased being exposed to asbestos in a workplace or in the surroundings.

Which of the following is true about prostrate cancer in men?

  1. The lifetime risk of developing it is 10%.

  2. It is the most common cause of cancer death in males.

  3. Its incidence rate is falling.

  4. It regards for approximately 30% of all cancers in men


Correct Option: D
Explanation:

It is the correct statement .The lifetime risk of developing prostate cancer is 30%, and it accounts for approximately 30% of all cancers in men.

Which of the following statements regarding the complications of prostate bone metastases in males is correct?

  1. Most pathological fractures occur as the result of trauma.

  2. In a sufferer the spinal cord compression is frequently managed by surgery.

  3. Prophylactic orthopaedic intervention is essential for bone abrasions at high risk of fracture.

  4. Bisphosphonates are unable to reduce the number of cancer-associated skeletal events in the body.


Correct Option: C
Explanation:

It is a correct statement. A prophylactic orthopaedic intervention is essential for bone abrasions at high risk of fracture.

In metastatic prostate cancer

  1. the median survival is about 24 months

  2. hormone therapy produces responses in around 70% of men with bone metastases.

  3. the median response duration of hormone therapy is 3 to 6 months.

  4. chemotherapy is the most commonly used systemic treatment of prostrate cancer.


Correct Option: B
Explanation:

Hormone therapy is one of the major modulus of medical treatment for cancer. It is the most commonly used systemic treatment and produces responses in around 70% of males who have bone metastases.

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