Explore topic-wise MCQs in Biotechnology.

This section includes 813 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.

251.

The cell most sensitive to RT -

A. Lymphocyte
B. Neutrophill
C. Platelett
D. Basophill
Answer» B. Neutrophill
252.

In X-ray right border of mediastinum is formed by all except:

A. Right atrium
B. SVC
C. Right branchiocephalic vein
D. Right ventricle
Answer» E.
253.

Inferior Rib notching is seen in:

A. Rickets
B. SLE
C. Coarctation of aorta
D. Marfan's syndrome
Answer» D. Marfan's syndrome
254.

A post operative patient developed septicemia and was empirically started on combination chemotherapy by a new resident doctor.However,when the patient didnot respond even after 10 days of antibiotics treatment,the review of the charts was done.It was found that the resident doctor had started the combination of antibiotics which was metually antagonistic in action.Which one of the following is the most likely combination that was given?

A. Cephalexin and Gentamicin
B. Vancomycin and Amikacin
C. Ciprofloxacin and Piperacillin
D. Ampicillin and Chloramphenicol
Answer» E.
255.

All of the following are advantages of using Raloxifen over estrogen in post menopasual women except:

A. Avoids Endometrial hyperplasia
B. Reduces fracture rates
C. No increase in incidence of breast carcinoma
D. Reduces incidence of venous thrombosis
Answer» E.
256.

Soap Bubble appearance in X-ray is seen in -

A. Cystic lymphagiectasis
B. Meconium ileus
C. Multiple cystic kidney
D. Neuroblastoma
Answer» C. Multiple cystic kidney
257.

Which one of the following is a recognized X-Ray feature of rheumatoid arthritis?

A. Sacroilitis
B. Juxta-articular osteosclerosis
C. Peri-articular calcification
D. Bone erosions
Answer» E.
258.

Least narcotic -

A. Heroine
B. Papaverine
C. Morphine
D. Codeine
Answer» C. Morphine
259.

Drug of choice for Zollinger - Ellison syndrome-

A. Proton lump inhibitors
B. Antihistaminics
C. Antacids
D. Dopamine agonists
Answer» B. Antihistaminics
260.

Emergency radiotherapy is given in -

A. Superior vena cava syndrome
B. Pericardial temponade
C. Spinal cord compression
D. All of the above
Answer» E.
261.

Tropomyosim:

A. Covers myosin and prevents attachments of actin and myosin
B. Helps in the fusion of actin and myosin
C. Causes Ca2+ release
D. Slides over myosin
Answer» B. Helps in the fusion of actin and myosin
262.

All are true about Mammography except -

A. Use low energy X rays
B. Screening and diagnostic tool
C. High positive predictive value
D. Specificity of mammography is 90%
Answer» D. Specificity of mammography is 90%
263.

Perimetry is a test to assess the -

A. Visual acuity
B. Intraocular pressure
C. Visual field
D. Depth of the anterior chamber
Answer» D. Depth of the anterior chamber
264.

Coagulation necrosis is seen in A/E -

A. M.I.
B. T.B.
C. Thermal
D. Zenker's degeneration
Answer» E.
265.

Which of the following tumors arise in the epiphysis -

A. Osteogenic sarcoma
B. Conventional chondrosarcoma
C. Osteoblastoma
D. Osteoclastoma
Answer» E.
266.

A patient presented in casualty with a history of student palpitation, sensation of impending doom and constriction in his chest.This lasted for about 10-15 minutes after which became all right.The diagnosis is likely to be -

A. Generalized Anxiety Disoeder
B. Pannic attack
C. Phobia
D. Personality disorder
Answer» C. Phobia
267.

'Marchiafava-Bignami' syndrome is:

A. Also called hospital addiction
B. Congenital
C. Related to alcoholism
D. Related to opium withdrawal
Answer» D. Related to opium withdrawal
268.

Which of the following is not compartible with a diagnosis of juvenile myelomonocytic leukemia -

A. Peripheral blood monocytosis, more than 1 x 109/L
B. Increased hemoglobin F levels for age
C. Presence of bcr/abl fusion gene
D. GM - CSF hypersensitivity of myeloid progenitors in vitro
Answer» D. GM - CSF hypersensitivity of myeloid progenitors in vitro
269.

Cellular and flagellar movement is carried out by all of the following except:

A. Tubulin.
B. Myosin.
C. Intermediate filaments.
D. Actin.
Answer» D. Actin.
270.

Babu a 19 yrs old male has a small circumscribed sclerotic swelling over diaphysis of femur;likely diagnosis is :

A. Ewings sarcoma
B. Osteoid osteoma
C. Osteoclastoma
D. Osteosarcoma
Answer» C. Osteoclastoma
271.

Best method to diagnose bronchiectasis is

A. X-ray
B. Bronchography
C. MRI
D. HRCT
Answer» C. MRI
272.

Blood pressure is defined as the product of -

A. Pulse pressure x pulse rate
B. Cardiac output x peripheral resistance
C. Systolic pressure x pulse
D. Diastolic pressure x pulse rate
Answer» C. Systolic pressure x pulse
273.

Complications of Tubercular Meningitis in children include all except

A. Ophthalmoplegia
B. Parkinsonism
C. Quadriplegia
D. Decerebrate rigitidy
Answer» C. Quadriplegia
274.

Investigation of choice for acute SAH is ?

A. DSA
B. X ray
C. CT scan
D. MRI
Answer» D. MRI
275.

Investigation of choice for a lesion of the temporal bone is:

A. USG
B. X-ray
C. MRI
D. CT
Answer» E.
276.

Subdural haematoma most commonly results from -

A. Rupture of cerebral AVM
B. Rupture of intracranial aneurysm
C. Hemophilia
D. Injury to cortical bridging veins
Answer» E.
277.

An increase in which of the following parameters will shift the O2 dissociation curve to the left:

A. 2,3 DPG concentration
B. Oxygen affinity of hemoglobin
C. Temperature
D. Partial pressure of CO2
Answer» C. Temperature
278.

Increased suicidal tendency is associated with -

A. Serotonin
B. Noradrenaline
C. GABA
D. Dopamine
Answer» B. Noradrenaline
279.

All are seen right side of cardiac shadow in X-ray chest PA view except -

A. Rt. atrium
B. Superior venacava
C. Inferior venacava
D. Ascending Aorta
Answer» E.
280.

Most Radiosensitive ovarian tumor is -

A. Dysgerminoma
B. Serus cystadenoma
C. Teratoma
D. Dermoid cyst
Answer» B. Serus cystadenoma
281.

Which of the following statement is true regarding basal metabolic rate -

A. It is not affected by dietary changes
B. Decreased by 50% in strarvation
C. Increased in strarvation
D. It is not influenced by hormonal changes
Answer» C. Increased in strarvation
282.

Hypocalcemia due to calcitonin is by -

A. Decreased bone resorption
B. Increased excretion in kidney -
C. Decreased renal reabsorption
D. Decreased intestinal absorption
Answer» B. Increased excretion in kidney -
283.

Left atrial enlargement on chest radiograph appears as -

A. Straightening of left heart border
B. Double density on right side
C. Displacement of left main bronchus
D. All of the above
Answer» E.
284.

True about nitric oxide -

A. Free radical
B. Vasodilator
C. Catalyst
D. All of the above
Answer» E.
285.

Heberden's nodes are found in -

A. PIP joints in osteoarthritis
B. DIP joints in osteoarthritis
C. PIP joints in rheumatoid arthritis
D. Both A and B
Answer» C. PIP joints in rheumatoid arthritis
286.

Hypocalcemia due to calcitonin is by :

A. Decreased intestinal absorption
B. Decreased renal reabsorption
C. Decreased bone resorption
D. Increased excretion in kidney
Answer» D. Increased excretion in kidney
287.

True statement about ions composition in body -

A. Phosphoru and Mg++ are major ions intercellularly
B. Na+, Cl- principal ions in E.C.F.
C. Kidney tightly regulates Na+,K+,Cl- composition
D. All of the above
Answer» E.
288.

Principle used in radiotherapy is

A. Ionization of molecules
B. Cytoplasmic coagulation
C. Necrosis of tissue
D. DNA damage
Answer» B. Cytoplasmic coagulation
289.

Characteristic of subdural hematoma is -

A. Concavo convex Hyperdense
B. Convex Hyperdensity
C. Concavo convex Hypodense
D. Biconvex hyperdense
Answer» B. Convex Hyperdensity
290.

The blood within the vessels does not clot normally because:

A. Sodium citrate in plasma chelates calcium ions
B. Vascular endothelium is smooth and coated with glycocalyx
C. Vitamin K antagonists are present in plasma
D. Thrombin has a positive feedback on plasminogen.
Answer» C. Vitamin K antagonists are present in plasma
291.

Which one of the following imaging modalities is most sensitive for evaluation of extra-adrenal pheochromocytoma

A. Ultrasound
B. CT
C. MRI
D. MIBG scan
Answer» D. MIBG scan
292.

Chondrocalcinosis is seen with -

A. Osteoarthritis
B. Gout
C. Septic arthritis
D. Pseudogout
Answer» E.
293.

Reabsorption of glucose in the kidney takes place in

A. Proximal tubule
B. Distal tubule
C. Loop of Henle
D. Collecting duct
Answer» B. Distal tubule
294.

Several hormones regulate the tubular reabsorption of water and electrolytes at different sites in the nephron. which of the following combination is correct -

A. Aldosterone in collecting ducts
B. Angiotensin in distal tubule
C. ANP in loop of Henle
D. ADH in proximal tubule
Answer» B. Angiotensin in distal tubule
295.

Neuroendocrinal tumors (NET) can be best detected by:

A. PET scan
B. HRCT scan
C. MRI
D. Radionuclide scan
Answer» E.
296.

Which of the following is an aminoneuro-transmitter-

A. GABA
B. Acetylcholine
C. Epinephrine
D. Lignocaine
Answer» B. Acetylcholine
297.

Which of the following indicates radiograph contrast induced nephropathy -

A. Increased creatinine levels
B. Decreased urine output
C. Increased bilirubin
D. Decreased bilirubin
Answer» B. Decreased urine output
298.

Radiological features of scleroderma are A/E -

A. Erosion of tip of phalynx
B. Lung nodules
C. Diffuse periosteal reaction
D. Esophageal dysmotality
Answer» D. Esophageal dysmotality
299.

During cardiac imaging the phase of minimum motion of heart is:

A. Late diastole
B. Mid diastole
C. Late systole
D. Mid systole
Answer» C. Late systole
300.

Chest X-ray picture in CCF -

A. Superior mediastinal widening
B. Multinodular parenchymal lesion
C. Cardiomegaly
D. Thick interlobar septum
Answer» D. Thick interlobar septum