After I read this quote, I was like if such a great author can feel this way, it was ok for me to feel the same!

MY VIVA #1
Hi,
During the last practical exams I shared my experience. I shared certain questions with answers which the examiner asked me during the practicals.even i share what i learn Even this time, I'm going to share a few questions and answers with you. Here we go,
This time I had exam (Practicals), number - microbial genetics and yesterday enzymology in biochemistry and - Molecular biology.
Let us start with the Biochemistry and molecular Biotechnology lab.
1.microbial genetics
What I know about streaking :
Purpose of streaking :
Why to Streak?
1) To get isolated colonies. ( mostly bacteria )
2) To check the presence of microbes in a sample ( sometimes)
Types:
1) Quadrant streaking: The plate is divided into 4 quadrants and streaking is done.
2) Continuous streaking: Continuous streak made from top to bottom.
After this 2nd experment is of procedure of transformation
I.e. simple
Bacterial Transformation:
1. Pipette 200ul sample cells into each of 3 ice cold Eppendorf tubes. Label the tubes Control, 1 ng, and 10 ng (1 ng is 10 -3 ug, or 10 -9 milligrams). The unknown plasmid is at a concentration of 1 ng/ul. Add 1 ng of your unknown plasmid to one tube and 10 ng to the other. Place the tubes on ice for 30 min.
2. Put the tubes at 42oC for exactly 90 seconds. Return the cells to ice for 1-2 minutes.
3. Pipette the transformation mixtures onto labeled plates containing ampicillin and spread them around using a sterilized, bent glass rod spreader.
4. Place upside down in the 37oC incubator in room 305 overnight.
5. 16 - 20 hours later, count the number of colonies on the plate with well-isolated colonies. Put parafilm around the edge of a plate and put it in a refrigerator for later use. Check the control plate to see that no colonies grew on it.
And the viva voce, that was very simple :) I scored 10/10 :)
Okay, let us see some of the questions that examiner asked me.
1) Question: Which gene responsible for antibiotic resistance
Answer: some plsmid have Ability to make host cell resistance to one or more antibiotic and these also transfer the resistance to cell lack R factor i.e. resistance
Sub questi
2) Question: What is plasmid and give some examples
Answer: Plasmid is extracellular DNA in prokaryotic oraganism and some are artificially synthesis plasmid also its genetic material ,
There are several types of plasmid
F plasmid - fertility plasmid
R plasmid - resistance plasmid
col plasmid
Promiscuous plasmid
Virulence plasmid
3) Tell me role of STET buffer ??
sir actually it contains Sucrose which helps in maintaining osmotic pressure; Triton X which helps in cleaving the cell wall; EDTA which acts as a chelating agent; Tris HCl is used as buffer.
nice tell me ur roll no ?
sir it's 69 😊😊
Bye meet with new subject .....
Hi, I am Cooking for my little one my cute one and love them lot and I love u also
SO what's your favorite dish ?
Everyone has his favorite dish like plants love urea phosphorus and minerals my garden need manure for my garden
I'm a bit different; I never grow roses,lilies, sunflowers in my garden; But, just cute little microscopic flowers
microbes!!! Each and every person will have their own favorite dish.
Mine is Tandur and butter masala. What's your's?
What do these little cells require for growing well?
But, what do my microbes need? What's their favorite?
Got an answer!!! Got an answer!
They love Agar!!! Starting with basics of preparing nutrient agar in my lab tomorrow.
I use to ask some questions to my professor and some i search online
Oooooo... My microbes are nonveggy. They love beef extracts, so i must add some to my nutrient agar!
Got some questions :
1) At what temperature does agar liquefy and solidify???
It's very simple to answer this,
Solidifies at 32 to 40 degree C.
Liquefies at 80 degree C.
2) What role does agar serve as a nutrient ???
Most microbes can't destroy and feed up agar, it just gives a background for holding the nutrients and the microbes. They give support to the cell wall of certain algae! It's a polymer made of galactose units.
3) Why agar instead of gelatin ?
Gelatin liquefies at even less temperature in the range of 35 to 40 degree C. But, Agar melts at 80 degree Moreover, only few microbes can degrade it , hence it can provide a better solid surface for growing microbes.
4) Nutrient agar for my microbes with contents like :
Glucose ---> Provides carbon source.
Peptone ---> Gives protein
Beef extract ---> aminoacids, sugars, inorganic salts
Nacl ---> For maintaining osmotic pressure.
NaCl is generally added to the nutrient media for maintaining the Osmotic pressure. Maintaining osmotic pressure is important, because, increase or decrease in the osmotic pressure leads to cell burst or death due to the effect of osmosis. So, maintaining the osmotic pressure is done by adding correct amount of NaCl. ( I learn this concept in last semester I like to relete science concept in various experiment)
Got tired out of typing and reading my notes and papers. ooov.. Gonna sleep.. good night!!!
will feed you tomorrow my little ones.!!! :P
Its nice to write here after a long time, how are u all 😊
Nowadays, I'm very much interested in reading something new regarding my subject, "Biotechnology".People say, "oh Tahakik you are bright student, then why you chose Biotechnology?
It has no scope. ,😣😣
You won't earn better. You might have chosen Engineering , Pharmacy or medical , UPSC's.
something like that..." But, who cares 😐💰💰
I'm loving my subject. Biotechnology is the branch where you can survive only when you are much interested. anyway
I'm thirsty , reading a lot for my ongoing and new research project. But, I'm finding it sometimes much difficult to organize and start with. I'm getting hundreds of ideas, but, I find some of them silly, I find some of them complicated, I find some of them impossible! But, still, with hope in myself and interest in the subject, I'm continuing with them spend lots of time to think and playing with ideas ...
My dream is to find something new and publish an article in a high impact journal.
Okay, let's stop here with my story, and go with the main matter. (sry for this )
We all love sweets, isn’t it? From a cute baby who had just started feeling and enjoying the tastes to 100 year old people, love sweets! 😘😋
Oh, I could hear you, yes, "Diabetic patients"
can’t enjoy sweets.
But, they too love to have sweets. Even, my Grandfather is diabetic and he uses to eat sweets hiding from my gramdmaa
Okay, what for that sweet love,🌷🌷
you are asking? Nothing wrong in that, but, if you are crazy about the bottled drinks, then, I’m sorry, you must start worrying!
Aspartame – is an artificial sweetener which is used in most of the bottled drinks. And, that is an approved artificial sweet nerby FDA (US Food and Drug Administration –which tests and approves all food and drug items before they are marketed)
“It is approved by FDA, then, why we must worry?”, is this your next question? Let me answer you!Aspartame is formed using two
aminoacids –
L-Phenyl alanine
L aspartate.
This when broken down during metabolism in ourbody produces – phenylalanine and hence must be avoided by people who are suffering from the genetic disorder called Phenyl Ketone Urea (PKU) – these people can’t metabolise phenyl alanine further!
This Aspartame will be unstable at higher temperatures and they are stable in the pH of 4 in general. As most of the bottled drinkshave the pH of 3 to 5, this is generally used in bottled drinks.(prefer chilled)
Moreover, this is preferred because this has 200% greater sweetness than the normal sucrose we use.
This is enough for us right?
The taste? The taste is enough, right?Okay, what is the problem in consuming thisaspartame? Only the PKU people must avoid this?
No, even normal healthy individual’s health will be affected on consuming aspartame in long run – many researches revealed this!
There are several published articles narrating the link between the aspartame consumption and Cancer! Yes, cancer,
leukemia!In 1965 Aspartame was discovered and was approved by FDA initially in 1974. Even after the approval, the safety of aspartame is being questioned by many researchers and the FDA considered the approval again!A trick to hide the risks behind a product is generally done by showing the results of short term tests and analysis. People are misled by such short term analysis!The metabolized products of aspartame not only include aspartate and phenyl alanine but also methanol. Methanol is toxic! But, many scientists and researches argue that methanol could be degraded by alcohol dehydrogenases. But, this degradation results in formaldehyde which will degrade DNA and proteins! This will lead to several Auto immune diseases and cancer!
And, researches reveal that men are affected more by the consumption of aspartame!
Many products like this, which are synthesized artificially might have long termeffects over our health, as this is going to affect us only in long run we won’t realize this.My mom use to advice me not to take bottled drinks and she suggests fresh juices instead (By Patanjali 😂😂).
She says, if I drink bottled items, it would affect my health.
It’s true isn’t it? Aspartame or other artificial sweeteners might be the reason behind this?I’m not sure about the worst effects of Aspartame, I just wrote this post by reading various articles and information already published.You are sick? May be it is due to artificial sweeteners? To check this, just avoid artificial sweeteners. Check the label of everything you consume sweet! If you are fine after avoiding these artificial sweets, then, the problem is with the artificial sweeteners.Just try to be safe with natural sweets!
प्रत्येकाला काही न काही अडचणी असतात. कोणी बोलतं, कोणी बोलत नाही. कोणी आपापले मार्ग आपणच शोधतात, कोणी इतरांना विचारतात.
पण ह्या सगळ्या प्रोसेस मधे सोबत कोणीतरी हवं असतं. नेहमी सगळा प्रॉब्लेम शेअर केला जाईल असही नाही. पण नुसतं बोलायला, व्हेंट आऊट व्हायला हवं असतं.
कधी माहिती - मदतहवी असते. या सगळ्यामधे प्रत्येकाच्या कॉंट्रीब्युशन असते, असावी लागते. कधी नुसतं एेकून घ्यायची, कधी सल्ले देण्याची,
*टर्न बाय टर्न हे प्रत्येकानं केलं तर गृप घट्ट होत जातो*
कधी एखादीला सतत माहितीच हवी, ती मात्र इतरांच्या मदतीला येत नाही, असं झालं की मग हा बंध सैल होऊ लागतो. सतत एकीलाच पँपर करत रहाणं हेही काही फार संयुक्तिक नाही.
तसच कधीतरी तुमची चूक दाखवली जाऊ शकते हेही लक्षात घ्यायला हवं.
तर कधी कोणीच मदतीला येऊ शकत नाही हेही समजून घेतलं पाहिजे.
प्रत्येकाचं मत वेगळं, अनुभव वेगळा, स्वभाव वेगळा,... हे प्रत्येकानेच समजून घ्यायला हवं.
आणि समजा एखाद्याला नाही समजलं एखाद वेळेस तर ते सोडूनही देता आलं पाहिजे.
सर्वात महत्वाचे म्हणजे गृप मधून बाहेर पडताना, नीट सांगून बाहेर पडायला हवं. परतीची वाट ओपन ठेवा.
हे सगळं लिहितोय ते खर तर माझं मलाच सांगतोय. सो नो ऑफेन्स प्लिज
तुला मिठीत घ्यायला
मला ' आवडणार ' नाही...
आवडत नाही असे कुणी सांगितले ?
तसे फार वेळा मनात येते
पण मग तिथे गोष्टी संपत नाहीत
मिठी संभाषणासारखी असते
आधी साधत नाही
मग कधी संपत नाही
आता त्या न संपणाऱ्या न घडणाऱ्या
संवादाचे काय करावे?
मिठी रेंगाळनार्या संवादात
'इत्यादी' असतोच ना
तसे तू मिठीचे करून टाकतेस
इत्यादी इत्यादी घुसमटनारे इत्यादी
दिघ:मूढ इत्यादी शब्द,स्पर्श,व्याकुळ ,
इत्यादी इत्यादींच्या अनेक तऱ्हां......
इत्यादींची मला भीती वाटते
तुलाही वाटते
तुझीही वाटते
इत्यादी भीती वाटण्यासाठीच असतात
किंवा निरर्थकमध्येच
केंव्हा तरी
माझ्याकडे वळणार्या
तुझ्या आतुर नजरेसारखी
ती निरर्थक असते !!!
असे नव्हे ,
पण कदाचीत तसेच असते
कारण ती इत्यादी असते
इत्यादी म्हणले तर अर्थपूर्ण असतात
म्हणले तर निरर्थक
मग कुणी म्हणले तर......
इत्यादी,इत्यादी........
(तहकीक ऋषिकेश रवींद्र)
Good evening all of you its nice to write hear my lab experience i.e. now become habbit to write this to me and now my aim is to make perfect my practical skill because to hone perfect my overall grade points. Now i stop hear blowing my own trumpet and start for topic
Thought there are several protein assays available,we do DNS last time but the most preferred one in many laboratories is "Lowry assay". It is effective in the concentration range of 0.1 mg/ml to 1 mg/ml.(we use 1 mg per ml i.e. add 50 u in 50 ml water )
As per procedure provide And, as an additional info, the paper published describing the procedure and principle of Lowry Assay is the most cited paper in the scientific history. (Feeling like, "Wow! I want to publish one to compete with Oliver.H. Lowry"??? :P) (i goohled this )
Why Lowry?
Though there are several other protein assays, mostly Lowry assay is used in many laboratories. The reasons for preferring Lowry are: sensitivity of the assay, highly reproducible, simple and easy .
Principle behind Lowry's Assay for protein with procedure
The reactions that occur in Lowry assay are binding of Copper to the Nitrogen in the peptide. And, the phosphomolybdic tungstic acid in the Folin Ciocalteau reagent gets reduced to hetero poly-molybdenum blue by the copper catalyzed oxidation of aromatic amino acids in the peptide, in alkaline conditions. The assay must be done at the pH of 10 to 10.5 as it is sensitive to pH changes.
Reagents Required:
A) 2% of sodium Carbonate (50 ml) + 0.1 N NaOH solution (50 ml)
B) 10 ml of 1.56 CuSo4 + 10 ml of 2.37% Sodium potassium tartarate
Lowry's Reagent = 2 ml of (B) + 100 ml of (A)
Folin's Reagent what we use in our laboratory is ready made one (2 N) which is just diluted and made as 1 N for use. (by mixing with equal volume of water)
For constructing Standard curve, BSA is generally used. Stock of 1 mg/ml is required.
Note: Prepare all the reagents in distilled water. And, prepare the reagents freshly before use, just before use, to avoid precipitation of the salt added, also mix the reagents A and B only before use.
Procedure:
First the BSA stock is diluted for standard curve construction. take 50 ml in 50 u BSA stock and
Then make sample o.1 mg per 1 ml of distilled water.
Then took 7 test tube mark them
B, 1,2,3,4,5, uk
Similarly, we can prepare various standard concentrations like 0,0.2,0.4,0.6,0.8,and add salivary amylase in unknown 1ml for total volume of 1 ml by mixing 0.1, 0.2,0.4,0.6,0.8,1 ml of stock BSA with 0.9,0.8,0.6,0.4,0.2,0 ml of distilled water respectively.
From this prepared standard concentrations of BSA, 0.2 ml must be taken for assay. For example, from the 1 ml of 0.05 mg/ml BSA prepared 0.2 ml must be taken in a separate test tube. Similarly, 0.2 ml must be taken from all the other standards.
Then, 2 ml of Lowry's reagent must be added to each of this 0.2 ml sample and incubated for 10 minutes.
Then, 0.5 ml of Folin's reagent is added to each of the incubated tubes and incubated for 30 minutes.
After 30 minutes, the tubes will have blue colored solution, which is further read at 660 nm in Spectrophotometer.
Graph should be plotted with absorbance in y axis and concentration in X axis.
And, using this standard graph, we can determine the concentration of unknown sample by extrapolation.
This is a very easy assay which I learnt in the firest year.
You know, I feel the major disadvantage of this Lowry assay is that you need to spend at least two hours to complete it including reagent preparation and incubation. (Sometimes, I feel like, oh, no, incubation for 30 minutes!How good it would be if there is no need for incubation?) And, when you don't have that much time,
And after this we go to show results of optical density in calorimeter to sir ,sir amaze to see results( i thought results may
Incorrect because there may mistake in stock a d working solution we took 1mg per 1ml sample ) while thinking this sir say why this division results are correct we dont have answer if this but i get answer of my doubt that we can use BSA solution @ 0.1 mg per 1ml to 1 mg per ml both results may correct..
Hope, this helped you :) Found any mistakes? Doubts? Let me know with your messages
It was 20th june I believe! I just saw the details of the Maharashtra agriculture research institutions(MCAER) undergraduate programs only a week before the last date. I decided to apply for it and just applied in a hurry actually, yes, it was really a hurry! I was done with everything and sent the application.
I was waiting for the release of selected list of candidates from the 25th july They updated the selection list everyday but my name was not on the list till 25th of March!that time i require admission is very essential otherwise my 1 year may spoil or if i took wrong decision may my whole carrier in danger to i remain very cool try to encourage myself because i fail pmt with narrow margin i dont want to took admission for BAMS or pharmacy . I used to go to the MCAER website everyday and check the list, but, my name was not there in the selected list of candidates. I lost all my hope and decided that I won't get selected. But, it happened! I received a mail from the Academy after 29th of july! I was happy to the core, jumping up and down. Because, after the 3 month of negative stress there is something to makes me happy from school time my favorite subject is biology its felling a good i go for most advanced course of natural science in no1 college
I believed that this would change my destiny to a better place! The college is not more long than my town but i required change
I was happy till my father said "no" to this. He was really afraid to send me out of my town! But, I managed to convince my dad and he accepted to allow me to take mebin hostel
And, the next problem after convincing my dad was, "when to join for the mgm cabt After lots of confusions, finally joined mgm hostel gandheli which was allotted me @ 7th and college starts 8th August
And, this is the first time for me, away from home!
Boys hostel. My room mate, he is a vaibhav kale and I'm really enjoying her company.
mgm college agri Biotechnology
In the college I got some new friends firest day lectures by mr. Chandre and mr shukre both of them goes basics in Biotechnology i was found active in class because we disscuss my fav subject i.e. Scope for biotechnology this day was play imp role in my image build up i.e. Day scholar student..
I now aware of all tensions forgot all problems in gandheli and its makes i love gandheli
Even i begain again for makes poems, write articles that i stops in cet period i.e. Very stressful time i got only 140/200 marks
After some days i
Introduced with B.N. Chavan sir who is principal and dean of our college they tell us about degree programe rules and regulation of college
The normal college timing is from 9.30 a.m to 5.oo p.m. And students do research even late nights which shows their ultimate interest. People here are dedicated!
Learning many things apart from the academics, which i hope will be very useful for the rest of my life. It is very safe in here and the place is really "God's own Country". People here are very friendly, smiling and caring, so that getting acquainted with the new environment becomes very easy!
Finally, I'm feeling free and independent for the first time in my life with a complete satisfaction of what I'm doing right now!
Many of the memories but i share after some day i go for completion practical the exam on head !
best wishes......
Yours friend
Rushikesh
I know I am going off on a tangent here, away from my destination of a Creationist's view of biotechnology
but I was thinking that there are many books and essays and teachings in the secular world that men use to guide their lives that either contain lessons similar to those in the Word or are directly or indirectly based on them. Three such books to me are:
All I Really Need To Know I Read in These Books it is the "secret "
and
The Seven Habits of Highly Effective People by Stephen R. Covey
Each has several key directives to focus on to make your life more relational, less anxious and guided by a purpose or destiny. Lets take a closer look at some of the directives from each book.
All You Really Need to Know
All I Really Need To Know secret is a book of Rhonda Byrne , and book become so popular until it get in my hand,
The title explain itself what is book actually about i.e. lists lessons normally learned in everyday life and some secret of great people they explains how the world would be better if we all lived by the same rules; sharing, being kind to one another, cleaning up after ourselves, and living "a balanced life" of work, play, and learning. The book contains over 50 short Lesson, reflecting on topics ranging from love,relationship,life,and social life
Here are a few of the points Rhonda Byrne
makes in his opening essay:
Live a balanced life
Clean up your own mess
Play fair
Share everything
Here are some that direct us to a similar path:
Live a balanced life - learn some and think some and draw and paint and sing and dance and play and work every day some.
- There is a time for everything, and a season for every activity under heaven:
- Learn to do right! Seek justice, encourage the oppressed. Defend the cause of the fatherless, plead the case of the widow.
- Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things.
Clean up your own mess - Clean up after yourself.
- "And when he comes, he finds [his house] swept and put in order.
- Let all things be done decently and in order.
- And the second [commandment] is like it: "Love your neighbor as yourself."
In a subsequent blog we will look at the next book,
"The Seven Habits of Highly Effective People"
เคृเคทिเคช्เคฐเคงाเคจ เคญाเคฐเคคाเคฒा เค เคจ्เคจเคงाเคจ्เคฏ เคเคค्เคชाเคฆเคจाเคค เคธ्เคตเคฏंเคญू เคฌเคจเคตเคฃाเคฐे เคนเคฐिเคคเค्เคฐांเคคीเคे เคเคจเค เคกॉ.เคธ्เคตाเคฎिเคจाเคฅเคจ เคฏांเคจा เคญाเคฐเคคเคฐเคค्เคจ เคชुเคฐเคธ्เคाเคฐ เคฎिเคณाเคฒा เคฏाเคा เคเคจंเคฆ เคเคนेเค.เค เคธे เค ...