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All posts related to Gate

Darkrai
Shared from GATE Mock Test - 1 (Biotechnology) on Jan 15, 2022 9:48 PM

A culture medium is undergoing sterilisation at 121°C. At the beginning, the microbial concentration of the culture was 106 cells/ml and after 1 hour, the concentration decreases to 104 cells/ml.

Determine the time in which 90% of the original microbial population would have died.

 
4.606 minutes
13 minutes
2.303 minutes
Data insufficient
Please type your answer before submitting.
Darkrai

This answer is wrong

Anindita Dutta
Shared from GATE Mock Test - 2 (Life Sciences) on Feb 11, 2021 9:21 PM

If one arginine has a molecular mass of 174 Daltons, what would be the molecular mass of a circular polymer of 38 arginines?

 
6612 Dalton
5928 Dalton
5966 Dalton
5982 Dalton
Please type your answer before submitting.
Anindita Dutta

The answer shown here is wrong as in case of circular peptide no water molecule is released and all 38 bonds form.

Pritam Das
Shared from GATE Mock Test - 1 (Chemical Engg.) on Feb 05, 2021 12:58 PM

A unity feedback control system has a forward path transfer function equal to . The unit step response of this system, starting from rest, will have its maximum value at a time equal to

 
0 s
0.56 s
5.6 s
infinity
Please type your answer before submitting.
Pritam Das

The laplace transform of the input is not multiplied with the transfer function here. but it should be.

Hitanshu Sekhar
Shared from Molecular Biology and Genetics - 2 on Feb 02, 2021 11:46 PM

If one gamete in five carries a recessive allele, what must be the frequency of the homozygous recessive genotype in a population at Hardy–Weinberg equilibrium?

 
4%
16%
20%
60%
Please type your answer before submitting.
Hitanshu Sekhar

Explain how?

Hitanshu Sekhar
Shared from Process Biotechnology - 2 on Jan 31, 2021 2:04 PM

For the production of Human Recombinant insulin, E.coli cultures is growing on the medium contains Glucose and Lactose. The gene responsible for the production of insulin is cloned into the organism using Lac promoter.

Both glucose and lactose are present in the medium but glucose is completely utilized and Lac inducer is added to the medium, then the organism ______________.

 
can produce insulin
can not produce insulin
cannot survive
no effect
Please type your answer before submitting.
Hitanshu Sekhar

I am not able to understand the explanation of this question. Kindly help.