Pages: 28

Laboratory organization and management is a fundamental aspect of any academic and research laboratory. There are specific necessary features in any laboratory, which are typically followed. These include specifications regarding the layout such as ventilation, lighting, and emergency exits as well as the type of materials to be used as laboratory consumables. In any laboratory appropriate safety precautions and management also need to be addressed. It is mandatory to maintain the laboratory equipment/instruments as per the licensed protocols and servicing norms. Display of safety signs and practice of essential safety measures should also be followed all the time. Furthermore, it is essential to understand the categorization of laboratory waste and manage it as per the convention. This chapter aims to describe all these essential features pertaining to the working of a basic science laboratory.

Pages: 30

Any experiment in modern biology requires the use of accurate reagents including solutions of specific normality/molarity and buffers of a specific pH and buffering capacity. Solutions, comprising dissolved solutes and solvents, form the basis of various biological and chemical processes. pH, a measure of hydrogen ion concentration, influences the structure and function of biomolecules, whereas buffers, composed of weak acids and bases, regulate pH fluctuations. The chapter elucidates the preparation of different types of solutions and explores the principles of acid-base chemistry, highlighting the Henderson-Hasselbalch equation and its application in calculating pH. The book also has in the appendix the calculations for the preparation of common laboratory buffers.

Pages: 47

Spectrophotometry and spectrofluorimetry is the quantitative measurement of the intensity of light of various wavelengths in the spectrum absorbed or emitted by matter. This chapter provides an in-depth examination of the principles and applications of these analytical techniques in the realms of biochemistry and molecular biology. A significant emphasis is placed on verifying the Beer-Lambert law, and terminologies such as spectroscopy, spectrophotometer, and λmax are defined to establish a solid foundational understanding of the topic. In addition, the chapter explores the phenomena of fluorescence, distinguishing between light absorption and emission, and investigates the influence of quenching agents on fluorescence intensity. It also examines the graphical representation of fluorescence intensity in relation to concentration, underscoring its importance in biochemical research. The various applications of spectrophotometry and spectrofluorimetry are highlighted, particularly in the quantitative estimation of biomolecules, the investigation of biomolecular interactions, enzyme kinetics, and protein folding. The list of mentioned experiments will serve as a crucial reference for students and professionals seeking to employ these techniques across various scientific investigations.

Pages: 34

The study of cell biology is incomplete without understanding cytology which is the study of cell structure and function. This chapter delves into the various techniques of cell biology that will help the reader to perform experiments using biological material. It begins with microscopy and the basic staining techniques required for observing cellular organelles, biomolecules, and the methodology for preparing temporary mounts. The chapter also discusses the methods to observe cellular divisions in both plant and animal cells and the effect of mitotic inhibitors.

Pages: 55

Carbohydrates are essential biomolecules that play vital roles in energy storage, structural integrity, and cell signaling in living systems. Analysis of carbohydrates includes quantitative and qualitative methods to identify, quantify, and characterize various types of carbohydrates. The qualitative analysis describes the tests that can be used to identify and confirm the presence of monosaccharides, disaccharides, and polysaccharides based on their chemical reactivity. In quantitative analysis, colorimetric and enzymatic assays for precise measurement of carbohydrate concentrations, both monosaccharides and polysaccharides have been discussed. This chapter thus provides a comprehensive overview of analytical techniques used for carbohydrate estimation and identification emphasizing their application in various fields, such as biochemistry, food science, and clinical diagnostics.

Pages: 40

Proteins are a diverse group of the macromolecules, which are polymers of amino acids linked by a peptide bond. All proteins are made up of different sequences and combinations of 20 classical amino acids. This chapter delves into the various qualitative and quantitative tests for amino acids and proteins, explaining the principle and the chemical reactions involved. It also includes experiments for the isolation and separation of amino acids using various chromatographic techniques and protein characterization like denaturation analysis, C-terminal amino acid identification and bioinformatic experiments. The chapter also discusses some troubleshooting tips to improve the problem-solving skills of the students.

Pages: 27

Lipids are nonpolar biomolecules that include fats, steroids, waxes, and their derivatives, which are related by their insolubility in water. Their chemical and structural heterogeneity makes them an important part of various biochemical and biophysical processes; however, it presents challenges during analysis. Lipid analysis includes determining type and content of fat present in various samples using different qualitative and quantitative methods. The chapter describes protocols for both qualitative analysis and the characterization of lipid samples. This is followed by protocols describing extraction and quantitative estimation of total lipids and different types of lipids present in the sample.

Pages: 25

Nucleic acids are one of the most essential biomolecules that play a crucial role in the storage, transmission, and expression of genetic information in all living organisms. They are polymers composed of nucleotide monomers, and the two primary types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The chapter provides a comprehensive overview of nucleic acids, their structures, types and functions. The experiments outlined in this chapter aim to facilitate learning about the characteristic properties of nucleic acids and describe methods for their isolation and purification from cells and tissues.

Pages: 53

Enzymes are biological catalysts fundamental to growth and survival of cells. The study of enzymes involves extraction, purification and characterization of an enzyme. Using acid phosphatase as an example, this chapter discusses methods of purification like ammonium sulfate precipitation and various chromatographic techniques. Methods for determination of optimum conditions (pH, temperature) and kinetic properties (activation energy, Km, Vmax, and Ki) of an enzyme have also been described. Other methods of studying enzyme activity like discontinuous assay, continuous assay coupled assay, and allosteric properties have also been described using suitable examples. It further includes studying the induction of hydrolytic enzymes during germination using Lipase as an example. It describes enzyme immobilization using calcium alginate method.

Pages: 43

Hematology is the study of blood, its components, and related disorders. The chapter on hematology provides an in-depth knowledge of various hematological techniques and diagnostic procedures necessary to understand blood-related diseases. It also focuses on the necessary precautions to be taken while handling blood samples to ensure safety, accuracy, and overall success of the experiments. The content of the chapter also encourages students to think beyond the practical skills gained in the laboratory by learning and comparing alternative methods to perform the experiment. Overall, this chapter equips students with the fundamental knowledge and practical skills necessary to perform experiments related to blood.