130. Which one of the statements is TRUE regarding chemical synapses in the nervoussystem? (a) Allow diffusion of chemical substances form the presynaptic neuron into thepostsynaptic neuron, (b) Allow transmission […]
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DBT BET JRF 2019 Previous Year Questions and Video solution
How Cystic Fibrosis Affects Ion Transport: The Role of CFTR Mutation
151. The ion transport that will be the most affected following mutation in Cystic fibrosis transmembrane conductance regulator (CFTR) gene is: (1) Sodium (2) Potassium (3) Chloride (4) Calcium Detailed […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
The First Organic Acid Produced Industrially: A Historical Perspective
The first organic acid to be produced industrially is 1. aspartic acid 2. gibberellic acid 3. acetic acid 4. lactic acid Detailed Explanation: Correct Answer: 3. Acetic acid Introduction […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Chemical Transmitters in the Basal Ganglia: Understanding Their Roles
129. Chemical transmitters in basal ganglia include all the following, EXCEPT: (a) Dopamine, (b) GABA, (c) Glutamate, (d) Glycine Understanding Chemical Transmitters in the Basal Ganglia Introduction The basal ganglia, […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Calculating Specific Activity of Enzymes: A Step-by-Step Guide
150. One microgram of a pure enzyme (MW: 92,000) catalyzed a reaction at a rate of 0.50 µmoles/min under optimum conditions. The specific activity of the enzyme [(µmoles/min)/mg protein] is: […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Mass Spectrometry: The Ionization of Proteins for Separation and Detection
Which of the following methods first ionizes a protein before separation and detection? 1. mass spectrometry 2. nuclear magnetic resonance 3. reverse phase chromatography 4. fluorescence spectroscopy Detailed Explanation: Correct […]
DBT BET JRF 2021 Previous Year Questions and Video solution
How the Hypothalamus Protects the Body Against Hypoglycemia
128. The hypothalamus protects the body against hypoglycemia by: (a) Increasing epinephrine release, (b) Increasing glucagon release, (c) Increasing thyroxin release, (d) Inhibiting insulin release Introduction Hypoglycemia, or low blood […]
DBT BET JRF 2019 Previous Year Questions and Video solution
Matching Physical and Chemical Properties with Separation Techniques in Bioprocessing
149. Match the physical/chemical property with the corresponding unit operations used for separation: a) Density difference (i) Distillation b) Partition coefficient (ii) Filtration c) Relative volatility (iii)Liquid-liquid extraction d) Particle […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Mechanism of Cyclosporine in Preventing Transplant Rejection
Cyclosporine, as immunosuppressive drug, given to avoid transplant rejection acts by 1. complement inhibition 2. B cell inhibition 3. T cell inhibition 4. NK cell inhibition Detailed Explanation: Correct Answer: […]
DBT BET JRF 2021 Previous Year Questions and Video solution
Understanding Interneurons: Their Role in the Nervous System
127. Interneurons: (a) Influence the rate of discharge from the alpha motor neurons, (b) Participate in ascending sensory pathways, (c) Provide communication between dendrites of the efferent neurons, (d) Provide […]
