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GATE BT-2017 Answer Key | Solutions Discussion
#9
Question was assertion and reasoning
Assertions: Gram -ve bacteria stained by saffranin
Reason: Gram -ve bacteria has LPS.
#10
(02-05-2017, 09:55 PM)RONIT SHARMA Wrote: Q: Which amino acid has three ionizable sites?
A. Glycine
B. Leucine
C. Valine
D. Lysine

Ans: Lysine (I guess)


Following is a list of pKa values for the a-carboxylic acid group, the a-amino group, and any ionizable side chains (the ionizable groups in the same order).


Alanine
2.35
9.87

Arginine
2.01
9.04
12.48


Asparagine
2.02
8.80

Aspartic Acid
2.10
9.82
3.86


Cysteine
2.05
10.25
8.00


Glutamic Acid
2.10
9.47
4.07


Glutamine
2.17
9.13

Glycine
2.35
9.78

Histidine
1.77
9.18
6.10


Isoleucine
2.32
9.76

Leucine
2.33
9.74

Lysine

2.18
8.95
10.53


Methionine
2.28
9.21

Phenylalanine
2.58
9.24

Proline
2.00
10.60

Serine
2.21
9.15

Threonine
2.09
9.10

Tryptophan
2.38
9.39

Tyrosine
2.20
9.11
10.07


Valine
2.29
9.72

Lysine is the correct one.
Sunil Nagpal
MS(Research) Scholar, IIT Delhi (Alumnus)
Advisor for the Biotech Students portal (BiotechStudents.com)
Computational Researcher in BioSciences at a leading MNC


Suggested Reads:
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Careers in Biotechnology | A list of various Options
Biotechnology Competitive Exams in India
#11
(02-05-2017, 10:01 PM)RONIT SHARMA Wrote: Question was assertion and reasoning
Assertions:  Gram -ve bacteria stained by saffranin
Reason: Gram -ve bacteria has LPS.

In my opinion, reasoning is correct for the assertion
Sunil Nagpal
MS(Research) Scholar, IIT Delhi (Alumnus)
Advisor for the Biotech Students portal (BiotechStudents.com)
Computational Researcher in BioSciences at a leading MNC


Suggested Reads:
Top Biotech Companies | Top places to work
Indian Biotech Companies and Job Openings
Aiming a PhD in Top Grad School? | These are the Important Points to Consider
Careers in Biotechnology | A list of various Options
Biotechnology Competitive Exams in India
#12
Q. Enzyme conc. is doubled in reaction following MM kinetics. Assume [So]>>Km. Find correct statement.
Options: I don't remember but one of ans was: There is no effect on Km and Vm and I market it.
  

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GATE BT-2017 Answer Key | Solutions Discussion32