1. The document contains 10 numerical problems applying the Beer-Lambert law to calculate absorbance, concentration, and molar absorptivity values for various chemical solutions.
2. Absorbance, concentration, path length, and molar absorptivity values are provided, and the appropriate Beer-Lambert law equation is used to solve for the unknown quantity.
3. The problems cover a range of chemical species including tryptophan, yeast t-RNA, copper sulfate, and calculate values including specific absorptivity and changes in absorbance with changes in concentration or path length.
What is Gravimetric analysis, stepes invloved in gravimetry, Filteration medium in gravimetry, gravimetric factor, application, organic and inorganic prepecating agents
What is Gravimetric analysis, stepes invloved in gravimetry, Filteration medium in gravimetry, gravimetric factor, application, organic and inorganic prepecating agents
This presentation gives you thorough knowledge about the IR Spectroscopy. This include basic principle, type of vibrations, factors influencing vibrational frequency, instrumentation and applications of IR Spectroscopy. This is the most widely used technique for identifying unknown functional group depending on the vibrational frequency.
Introduction and principle of glc, hplc
columns of hplc
columns of glc
detectors of glc
detectors of hplc
chromatography
classification of chromatography
gas liquid chromatography
high performance liquid chromatography
Determination of the order of reaction between potassium persulphate & potass...PRAVIN SINGARE
This presentation is based on the experimental demonstration of "Determination of the order of reaction between potassium persulphate & potassium iodide by fractional change method". The presentation is for chemistry Undergraduate student of Mumbai University.
This presentation gives you thorough knowledge about the IR Spectroscopy. This include basic principle, type of vibrations, factors influencing vibrational frequency, instrumentation and applications of IR Spectroscopy. This is the most widely used technique for identifying unknown functional group depending on the vibrational frequency.
Introduction and principle of glc, hplc
columns of hplc
columns of glc
detectors of glc
detectors of hplc
chromatography
classification of chromatography
gas liquid chromatography
high performance liquid chromatography
Determination of the order of reaction between potassium persulphate & potass...PRAVIN SINGARE
This presentation is based on the experimental demonstration of "Determination of the order of reaction between potassium persulphate & potassium iodide by fractional change method". The presentation is for chemistry Undergraduate student of Mumbai University.
Biochemical mechanismsof acid base balance and acid base disordersrohini sane
A comprehensive presentation on Biochemical Mechanisms of Acid-Base Balance and Acid Base disorders for undergraduate medical, dental, biotechnology and pharmacology students for self –learning. pH maintained in tissues under physiological conditions are mentioned.
Basic concepts of buffers & their types (Acidic buffer & alkaline) are illustrated. Mechanisms of action of Buffer system for acid base balance is explained for perusal of students. Acids produced in a human body during metabolisms are listed.
Front line defense, second line defense (kidney) and dilution factor in regulation of pH in human body for acid-base balance are presented.
Blood buffers involved in acid base balance are classified. Ratio involved, Advantages and Disadvantages of Bicarbonate Buffer / Phosphate buffer system in acid base balance elaborated for their clinical applications.
Comparison of Buffering action of hemoglobin verses plasma proteins is presented under Protein buffer system. Mechanism of Buffering action of plasma proteins in Acidic and alkaline conditions is explained. Working of Hemoglobin buffer system in lung and tissue is illustrated.
Mechanisms involving hypo ventilation and hyperventilation of respiratory system in acid base balance is presented. Importance of Imidazole group of Histidine of hemoglobin in maintaining blood pH is explained
Role Renal Mechanism during acidosis and alkalosis using Bicarbonate mechanism, Phosphate mechanism, Ammonia mechanism, HCO³⁻ reabsorption and NH ₃ production is simplified. pCO₂, Concentration of K⁺ in ICF (intracellular fluid). Plasma Concentration of Cl⁻ ions and Concentration of adrenal-corticoids Hormones as factors affecting bicarbonate re absorption in proximal renal tubular cells are explained in lucid manner.
Phosphate buffer mechanism (Distal tubular cells) for acid base balance is illustrated.
Importance of Anion Gap in detection of metabolic acidosis & alkalosis presented. Anion Gap in Metabolic acidosis (acid accumulation and bicarbonate ion loss) is elucidated. Urinary anion gap as indicator of effective renal acid secretion during acidosis is explained diagrammatically. Clinical Conditions associated with increase and decrease in Anion Gap are listed. Comparison of Anion Gap between Metabolic acidosis And Metabolic alkalosis is explained diagrammatically.
Importance of Glutaminase, Glutaminase, L- amino acid oxidase, and Glycine oxidase in Ammonia mechanism in kidney-Distal tubular cells for acid base balance is presented.
Comparison of Definition, Ratio, Biochemical findings in Uncompensated and Compensatory phase of between different types of acidosis & alkalosis is done for their laboratory diagnosis. Clinical conditions associated in different types of acidosis & alkalosis are listed. Google images are used to convey the concept of the subject to self-learners.
Learn the difference between the types of lab decontaminations, which one makes the most sense for you, why, and how to execute. This deck will give you tactical, step-by-step instructions to completing your lab move thoroughly, cost effectively and safely.
Properties of water and aqueous solutionssabir shah
Akhuwat Faisalabad Institute Of Research Science and
Technology.....
This video is a course context of 1st prof Bs (hons) biotechnology.. which is prepared by momin khan niazi...........
Programmed Assembly of Synthetic Protocells into Thermoresponsive PrototissuesZohaib HUSSAIN
Programmed assembly of synthetic protocells into thermoresponsive prototissues
Programmed assembly of synthetic protocells into thermoresponsive prototissues
Programmed assembly of synthetic protocells into thermoresponsive prototissues
Programmed assembly of synthetic protocells into thermoresponsive prototissues
Programmed assembly of synthetic protocells into thermoresponsive prototissues
Introduction
Anatomy and Physiology of bone
Bone Tissue Engineering
Recent studies related to bone tissue engineering
Commercialized products and ongoing clinical trials
Biomedical start-ups
Concluding remarks
Introduction
Anatomy and Physiology of bone
Bone Tissue Engineering
Recent studies related to bone tissue engineering
Commercialized products and ongoing clinical trials
Biomedical start-ups
Concluding remarks
Introduction
Anatomy and Physiology of bone
Bone Tissue Engineering
Recent studies related to bone tissue engineering
Commercialized products and ongoing clinical trials
Biomedical start-ups
Concluding remarks
Large-scale Production of Stem Cells Utilizing MicrocarriersZohaib HUSSAIN
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No matter how complex or advanced a machine, such as the latest cellular phone, the device cannot function without energy. Living things, similar to machines, have many complex components; they too cannot do anything without energy, which is why humans and all other organisms must “eat” in some form or another. That may be common knowledge, but how many people realize that every bite of every meal ingested depends on the process of photosynthesis?
Contents
1. Insulin Molecule
2. Effect of Insulin in Body
3. History of Insulin
4. Recent Trends in Insulin Productions and Types
4.1 Animal Insulins
4.2 Long-Acting Insulins
4.3 Human Insulins
4.4 Insulin Analogues
4.5 Biosimilar Insulins
5. Insulin Production (Chain A and Chain B Method)
5.1 Upstream Processing
5.2 Downstream Processing
6. The Proinsulin Process
7. Insulin Available in Market with Different Brand Names
8. References
Oxidation & Reduction involves electron transfer & How enzymes find their sub...Zohaib HUSSAIN
Oxidation is loss of electrons
Reduction is gain of electrons
Oxidation is always accompanied by reduction
The total number of electrons is kept constant
Oxidizing agents oxidize and are themselves reduced
Reducing agents reduce and are themselves oxidized
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Types of Cellulases
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Life on Earth (By Alonso Ricardo and Jack W. Szostak) Summary (By Zohaib Hus...Zohaib HUSSAIN
Life on Earth (By Alonso Ricardo and Jack W. Szostak)
Summary (By Zohaib Hussain)
Life on Earth (By Alonso Ricardo and Jack W. Szostak)
Summary (By Zohaib Hussain)
Life on Earth (By Alonso Ricardo and Jack W. Szostak)
Summary (By Zohaib Hussain)
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1. Levels of gene regulation
The observation that differences in the RNA and protein content of different tissues are not paralleled by significant differences in their DNA content indicates that the process whereby DNA produces mRNA must be the level at which gene expression is regulated in eukaryotes. In bacteria this process involves only a single stage, that of transcription, in which RNA copy of the DNA is produced by the enzyme RNA polymerase. Even while this process is still occurring, ribosomes attach to the nascent RNA chain and begin to translate it into protein. Hence cases
of gene regulation in bacteria, such as the switching on of the synthesis of the enzyme β-galactosidase in response to the presence of lactose (its substrate), are mediated by increased transcription of the appropriate gene. Clearly, a similar regulation of gene transcription in different tissues, or in response to substances such as steroid hormones which induce the synthesis of new proteins, represents an attractive method of gene regulation in eukaryotes.
In contrast to the situation in bacteria, however, a number of stages intervene between the initial synthesis of the primary RNA transcript and the eventual production of mRNA (Fig. 1).
The initial transcript is modified at its 5′ end by the addition of a cap structure containing a modified guanosine residue and is subsequently cleaved near its 3′ end, followed by the addition of up to 200 adenosine residues in a process known as polyadenylation. Subsequently, intervening sequences or introns, which interrupt the protein-coding sequence in both the DNA and the primary transcript of many genes. Although this produces a functional mRNA, the spliced molecule must then be transported from the nucleus, where these processes occur, to the cytoplasm where it can be translated into protein.
Telomere, Functions & Role in Aging & CancerZohaib HUSSAIN
Why senescence occurs in eukaryotic organisms?
The major function of telomere is to cap the ends of chromosomes and protect the chromosomes from RED mechanism. As cells divide, telomeres continuously shorten with each successive cell division. Telomerase provides the necessary enzymatic activity to restore and maintain the telomere length. The vast majority of tumour's activate telomerase , and only few maintain telomeres by ALT mechanism relying on recombination. Telomere and telomerase are the attractive targets for anti-cancer therapeutics
Eukaryotic and Prokaryotic Chromosomes Eukaryotic and Prokaryotic Chromosomes Eukaryotic and Prokaryotic Chromosomes Eukaryotic and Prokaryotic Chromosomes Eukaryotic and Prokaryotic Chromosomes Eukaryotic and Prokaryotic Chromosomes Eukaryotic and Prokaryotic Chromosomes
Chromosomes are bundles of tightly coiled DNA located within the nucleus of almost every cell in our body. A chromosome is a DNA molecule with part or all of the genetic material (genome) of an organism. Chromosomes are normally visible under a light microscope only when the cell is undergoing the metaphase of cell division. Before this happens, every chromosome is copied once (S phase), and the copy is joined to the original by a centromere, resulting in an X-shaped structure. The original chromosome and the copy are now called sister chromatids. During metaphase, when a chromosome is in its most condensed state, the X-shape structure is called a metaphase chromosome.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
1. 0
COMSATS Institute of Information Technology, Abbottabad
Course title and code Analytical Techniques
Assignment number 01
Assignment title 10 Numericals of Beer–Lambert law
Submitted by Zohaib HUSSAIN
Registration number Sp13-bty-001
Submitted To Dr. Murtazaa SAYED.
Date of submission Sunday, March 13, 2016
2. 1
1. A solution of Tryptophan has an absorbance at 280 nm of 0.54 in a 0.5 cm
length cuvette. Given the absorbance coefficient of trp is 6.4 × 10
3
LMol-1
cm-1
.
What is the concentration of solution?
Solution:
As ε = A / l c
l= 0.5 cm
A= 0.54
ε = 6.4 × 10
3
LMol-1
cm-1
C=?
So c = A/ε l
= 0.54 / 6.4 × 10
3
× 0.5
Answer = 0.000168 M
2. A solution of thickness 2 cm transmits 40% incident light. Calculate the
concentration of the solution, given that ε = 6000 dm3 /mol/cm.
Solution:
A = 2 - log10 %T = 2 - log10 40 = 2 – 1.6020 = 0.398
A = ε l c
l= 2cm
ε = 6000 dm3/mol/cm
A=0.398
c=?
So c = A/ ε l = 0.398/ 6000 × 2
Answer = 3.316 X 10
– 5
mol / dm3
3. 2
3. A solution shows a transmittance of 20%, when taken in a cell of 2.5 cm
thickness. Calculate its concentration, if the molar absorption coefficient is
12000 dm3/mol/cm.
Solution:
A = 2 - log10 %T = 2 - log10 20 = 2 – 1.301 = 0.698
A = ε l c
l= 2.5 cm
ε = 12000 dm3/mol/cm
A=0.698
c=?
So c = A/ ε l
= 0.698/ 12000 × 2.5
Answer = 2.33 X 10
– 5
mol / dm3
4. Calculate the molar absorptivity of a 1 x 10
-4
M solution, which has an
absorbance of 0.20, when the path length is 2.5 cm.
Solution:
A = ε l c
l= 2.5 cm
A= 0.20
C= 1 x 10
– 4
M
ε =?
So ε = A / l c
4. 3
= 0.20/ 2.5 ×1 x 10
-4
Answer = 800 dm3/mol/cm.
5. The concentration of yeast t-RNA in an aqueous solution is 10 M. The
absorbance is found to be 0.209 when this Solution is placed in a 1.00 cm
cuvette and 258 nm radiations are passed through it.
a) Calculate the specific absorptivity, including units, of yeast t-RNA.
b) What will be the absorbance if the solution is 5 M?
c) What will be the absorbance if the path length of the original solution is
increased to 5.00 cm?
Solution
5a
l = 1.00 cm
c = 10.00 M
A=0.209
So ε = A / l c
= 0.209 / 1.00 cm X 10 M
Answer = 0.0209 dm3/mol/cm.
5b
ε = 0.0209 dm3/mol/cm.
l = 1.00 cm
c = 5.00 M
A=?
So A = ε l c
5. 4
A = 0.0209 dm3/mol/cm. X 1.00 cm X 5M
Answer = 0.1045
5c
ε = 0.0209 dm3/mol/cm.
l = 5.00 cm
c = 10.00 M
A=?
So A = ε l c
A = 0.0209 dm3/mol/cm X 5.00 cm X 10.00 M
Answer = 1.045
6. Calculate the molar absorptivity of a 0.5 x 10
-3
M solution, which has an
absorbance of 0.17, when the path length is 1.3 cm.
Solution:
A = ε l c
l= 1.3 cm
A= 0.17
C= 0.5 x 10
-3
M
ε =?
So ε = A / l c
= 0.17/ 1.3 × 0.5 x 10
-3
Answer = 261.53 dm3/mol/cm.
6. 5
7. A CaCO3 solution shows a transmittance of 90%, when taken in a cell of
1.9 cm thickness. Calculate its concentration, if the molar absorption
coefficient is 9000 dm3/mol/cm.
Solution:
A = 2 - log10 %T = 2 - log10 90 = 2 – 1.954 = 0.045
A = ε l c
l= 1.9 cm
ε = 9000 dm3/mol/cm
A=0.045
c=?
So c = A/ ε l
= 0.045/ 9000 × 1.9
Answer = 2.631 × 10
-6
mol / dm3
8. Extinction coefficient of NADH at 340 nm is 6440 L/mol/cm. whereas NAD
does not absorb at 340nm. What absorbance will be observed when light at
340nm passes through a 1cm cuvette containing 10uM NADH and 10 uM
NAD.
Solution:
ε = 6440 L/mol/cm.
l = 1.00 cm
c = 10.0 uM =10 X 10
-6
M
A=?
So A = ε l c
A = 6440 L/mol/cm X 1.00 cm X 10 X 10
-6
M
7. 6
Answer = 0.0644
Note: this absorbance is only for NADH because NAD do not absorb at 340nm.
9. A 1.00 × 10–4
M solution of an analyte is placed in a sample cell with a path
length of 1.00 cm. When measured at a wavelength of 350 nm, the solution’s
absorbance is 0.139. What is the analyte’s molar absorptivity at this
wavelength?
l = 1.00 cm
c = 1.00 × 10
–4
M
A=0.139
ε =?
So ε = A / l c
= 0.139/ 1.0 × 1.00 x 10
-4
Answer = 1390 cm−1
M−1
10. The absorbance of a Cu sulphate solution containing 0.500 mg Cu/mL was
reported as 0.3500 at 440 nm.
a) Calculate the specific absorptivity, including units, of Cu sulphate on
the assumption that a 1.00 cm cuvette was used.
b) What will be the absorbance if the solution is diluted to twice its original
volume
Solution
a) l = 1.00 cm
c = 0.500 mg/ml
A= 0.3500
ε =?
8. 7
So ε = A / l c
= 0.3500 / 1.0 × 0.500
Answer = 0.7 cm
-1
(mg/mL)
-1
b) c= 0.250 mg/ml
ε= 0.7 cm
-1
(mg/mL)
-1
l = 1.00 cm
A=?
So A = ε l c
A = 0.7 cm
-1
(mg/mL)
-1
X 1.00 cm X 0.250 mg/ml
Answer = 0.175