Phase contrast microscope takes advantage of
Select an option to see the answer and solution.
Biotechnology Engineering · all questionsBasic Principles of Biotechnology
Basic Principles of Biotechnology
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
57
Questions
3/3
Page
Pick an option on a question to see the right answer and solution.
Measurement of KLa in a bioreactor can be carried out by sodium sulfite oxidation method, that is, based on the oxidation of sodium sulfite to sodium sulfate in the presence of a catalyst (Cu++ or Co++). In a typical experiment, a laboratory fermenter was filled with 5 liter of 0.5 M sodium sulfite solution containing 0.003 M Cu++ ions and the air was sparged in. After 10 min, the air flow was stopped and a 10 mL sample was taken and titrated. The concentration of sodium sulfite in the sample was found to be 0.20 M. The oxygen uptake rate for this aerated system will work out to be
Select an option to see the answer and solution.
In a well aerated and agitated microbial culture, the 'supply' of oxygen is equal to 'demand' (uptake) of the growing culture. The KLa for such a system will be (KLa = volumetric mass transfer coefficient, C* = dissolved oxygen concentration in liquid in equilibrium with gaseous oxygen, C = instantaneous value of dissolved oxygen concentration, 'r' = specific oxygen uptake rate per unit weight of cells, X = dry weight of the cells per unit volume)
Select an option to see the answer and solution.
Glycogen is a branched polymer of glucose It has
Select an option to see the answer and solution.
Shear stress versus shear rate behavior of four different types of fluids (I, II, III and IV) are shown in the figure below.
Which one of the following options is correct?
Which one of the following options is correct?
Select an option to see the answer and solution.
If the frequency of males affected with an X-linked recessive condition in a human population is 0.10 (one in ten), what will be the expected frequency of affected females?
Select an option to see the answer and solution.
Power number also called Newton's number, is defined as a dimensionless parameter relating to
Select an option to see the answer and solution.
In the meiosis type cell division, chromatids segregates during
Select an option to see the answer and solution.
Binding of mannose 6-Phosphate to protein lead to its localization to
Select an option to see the answer and solution.
In mammalian cells, RNA editing
P. Can change the coding capacity of a gene after transcription
Q. Creates a stop codon in the middle of the apo-B mRNA in intestinal cells but not in liver cells
R. Usually makes many changes in each mRNA
S. Can change specific nucleotides by deamination
P. Can change the coding capacity of a gene after transcription
Q. Creates a stop codon in the middle of the apo-B mRNA in intestinal cells but not in liver cells
R. Usually makes many changes in each mRNA
S. Can change specific nucleotides by deamination
Select an option to see the answer and solution.
All histones undergo post-translational modification of specific amino acids. These modifications
P. Alter the charge of the histone molecule
Q. Are permanent
R. Occur on the N-terminal tail of the histones, which are thought to extend out from the core
S. Occur at specific times during the cell cycle
P. Alter the charge of the histone molecule
Q. Are permanent
R. Occur on the N-terminal tail of the histones, which are thought to extend out from the core
S. Occur at specific times during the cell cycle
Select an option to see the answer and solution.
The concept of random fluctuations gene frequency as an evolutionary force was originally proposed by
Select an option to see the answer and solution.
In a bioreactor baffles are incorporated to
Select an option to see the answer and solution.
Cytochrome P450 family of enzymes causes detoxification mainly by
Select an option to see the answer and solution.
Telomerase activity was monitored in the following cell types. The highest amount of telomerase activity was found in the combination of
Select an option to see the answer and solution.
A protein which spans that lipid bilayer
Select an option to see the answer and solution.
Which of the following equation represent the reciprocal of Michaelis-Menten equation
Select an option to see the answer and solution.