Tag: bio-chemistry

Questions Related to bio-chemistry

Heavier and lighter isotropic forms of an element can be separated by which technique?

  1. Electrophoresis

  2. Density gradient centrifugation

  3. Buoyant density centrifugatio

  4. Chromatography


Correct Option: C
Explanation:

Buoyant density centrifugation 

It is also called isopycnie centrifugation or equilibrium density - gradient centrifugation which uses the concept of Buoyancy to separate molecules in solutions by their difference in density.

Name the equipment used in measuring thermal behaviour of water _______________.

  1. SEM

  2. Differential scanning calorimeter

  3. Real time PCR

  4. MALDI-TOF


Correct Option: B

Pure fractions of cellular components can be isolated by

  1. Chromatography

  2. Scanning electron microscopy

  3. X-ray diffraction

  4. Differential centrifugation

  5. Autoradiography


Correct Option: D

The space between the layers of the brain is filled with fluid is called ...........

  1. Cerebrospinal fluid

  2. Pleural fluid

  3. Synovial fluid

  4. Aqueous humour


Correct Option: A
Explanation:
A. Cerebrospinal fluid is a clear liquid produced within spaces in the brain called ventricles. Like saliva, it is filtrate of blood. It is also found inside the subarachnoid space of the meninges which surrounds both the brain and spinal cord.
B. Pleural fluid is a thin translucent fluid that fills the cavity between the parietal(outer) and visceral(inner) pleural layers surrounding the lungs.
C. Synovial fluid also called synovia is a vicious, non- Newtonian fluid found in the cavities of synovial joints.
D. Aqueous is a thin, watery fluid located in the anterior and posterior chambers of the eye.
So, the correct answer is "Cerebrospinal fluid".

The function of choroid plexus and ependymal cells is?

  1. To produce lymph

  2. To produce blood

  3. To produce cerebrospinal fluid

  4. To produce endolymph


Correct Option: A

The amount of cerebrospinal fluid in an adult healthy human being is about.

  1. $200$ml

  2. $120$ml

  3. $60$ml

  4. $300$ml


Correct Option: A

The function of cerebrospinal fluid does not include

  1. Protection of brain and spinal cord by containing antibody

  2. Protection of delicate brain and spinal cord from shock

  3. As a medium for excretion of waste product

  4. Buoyancy to brain


Correct Option: A
Explanation:

The primary function of CSF is to cushion the brain within the skull and serve as a shock absorber for the central nervous system. CSF also circulates nutrients and chemicals filtered from the blood and removes waste products from the brain.

Cerebrospinal fluid occurs

  1. Between arachnoid and duramater

  2. Beneath piamater

  3. Between arachnoid and piamater

  4. Between duramater and cranium


Correct Option: C

Choroid plexus produces 

  1. Lymph

  2. Endolymph

  3. Cerebrospinal fluid

  4. All the above


Correct Option: C

Fluid found between piamater and arachnoid is

  1. Subdural fluid

  2. Cerebrospinal fluid

  3. Tissue fluid

  4. Lymph


Correct Option: B