Tag: bio-chemistry

Quizzes (82) Questions (1918)

Questions Related to bio-chemistry

Multiple choice spectrophotometer, colorimeter and biosensor biochemical techniques 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
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

Multiple choice spectrophotometer, colorimeter and biosensor biochemical techniques bio-chemistry

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

  1. SEM

  2. Differential scanning calorimeter

  3. Real time PCR

  4. MALDI-TOF
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Differential scanning calorimetry (DSC) is the standard analytical technique used to measure the thermal behavior, such as heat capacity and phase transitions, of materials including water.

Multiple choice spectrophotometer, colorimeter and biosensor biochemical techniques bio-chemistry

Pure fractions of cellular components can be isolated by

  1. Chromatography

  2. Scanning electron microscopy

  3. X-ray diffraction

  4. Differential centrifugation

  5. Autoradiography
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Differential centrifugation is the primary laboratory technique used to isolate pure fractions of cellular components by exploiting differences in sedimentation rates.

Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

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
Reveal answer Fill a bubble to check yourself
A Correct answer
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".
Multiple choice bio-chemistry nervous system of man introduction to brain body fluid central nervous system

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
Reveal answer Fill a bubble to check yourself
A Correct answer
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.