eChapters

Introduction

Protein metabolism is a complex and multifaceted process that plays a crucial role in the overall health and function of living organisms. At the most fundamental level, protein metabolism involves the synthesis, breakdown, and utilization of proteins, which are essential macromolecules that serve a wide range of structural, functional, and regulatory roles within the body.

The process of protein synthesis, or translation, begins with the transcription of genetic information stored in DNA into messenger RNA (mRNA) molecules. These mRNA molecules then serve as templates for the assembly of specific sequences of amino acids into polypeptide chains, which ultimately fold into the three-dimensional structures of functional proteins. This highly regulated process is essential for the production of the diverse array of proteins required for cellular processes, tissue repair, immune function, and numerous other physiological activities. In contrast, protein degradation, or catabolism, refers to the breakdown of proteins into their constituent amino acids. This process is mediated by various proteolytic enzymes, such as endopeptidases, exopeptidases, and dipeptidases, which cleave the peptide bonds that hold the amino acid residues together Protein degradation serves important functions, such as the recycling of amino acids for energy production or the synthesis of new proteins, the removal of damaged or misfolded proteins, and the regulation of cellular signaling pathways.

Introduction

According to the body needs, minerals may be divided into 2 groups like macrominerals and microminerals. Macrominerals are required in amounts greater than 100 mg/day. They include 6 elements like calcium, phosphorus, magnesium, sodium, potassium and chloride. Whereas microminerals are also known as trace elements and are required in amounts less than 100 mg/day. They include 10 elements like chromium, cobalt, copper, fluoride, iodine, iron, manganese, molybdenum, selenium, zinc and silicon. Some minerals are always required since small amounts of inorganic salts are always excreted Fruits, vegetables and cereals are the chief sources of the mineral elements in the diet. Milk products supply the majority of the calcium and phosphorus in the diet.

Milk and milk products are the richest source of calcium along with beans, leafy vegetables and egg yolk. It is absorbed from upper small intestine. Absorption of calcium is active process and requires calcium binding protein present in the intestinal mucosal cells. The absorption is regulated by vitamin D, parathyroid hormone, high protein diet, pH, high dietary lactate and citrate are the factors that promotes calcium absorption. Whereas high dietary phosphate, alkalinity and impaired fat absorption are the factors that inhibits calcium absorption. Of the total body calcium, 99 % present in bones and teeth in the form of hydroxyapatite and 1 % is present in body fluids and other tissues. Calcium in bones acts as a reservoir, which helps to stabilize calcium ions in plasma and extracellular f luid Parathyroid hormone and active vitamin D stimulate osteoblasts while estrogen hormone inhibits osteoclasts.

Oligosaccharides comprise 2 to 10 units of monosaccharide molecules, which are released upon hydrolysis. The oligosaccharides are classified depending upon the number of monosaccharide units, e.g., Disaccharides (two monosaccharide units), Trisaccharides (three monosaccharide units), Tetrasaccharides (four monosaccharide units). Disaccharides are the most common oligosaccharides found in nature.
4.1 Disaccharides
Disaccharides are formed when glycosidic linkages covalently bond two monosaccharides together. A glycosidic bond is formed when the hydroxyl group on one of the sugars reacts with the monomeric carbon on the second sugar. A glycosidic bond can be alpha or beta, depending on the steric configuration at carbon one on the monosaccharide unit. During the union of two monosaccharide units, water molecules are eliminated (dehydration reaction or condensation reaction, or dehydration synthesis), and the formation of a glycosidic bond occurs, through which the units are linked via an oxygen bridge.

Introduction
At the end of gastrulation, the mesoderm of the developing embryo differentiates into three regions: paraxial, intermediate, and lateral mesoderm. These regions play crucial roles in the formation of various body structures. As development proceeds, clefts form in the lateral mesoderm, which later coalesce to form a cavity. This cavity splits the lateral mesoderm into two layers: the somatic (outer) layer and the splanchnic (inner) layer. The space between these layers on each side of the midline becomes known as the coelomic cavity. These left and right coelomic cavities extend cranially, meet in front of the developing neural and cardiogenic plates, and fuse to form a horseshoe-shaped coelomic cavity. The walls of the developing coelomic cavity have two layers. The outer layer consists of somatic mesoderm, which fuses with ectoderm to form the somatopleure. The inner layer consists of splanchnic mesoderm, which fuses with endoderm to form the splanchnopleure. The mesodermal cells lining the coelomic cavity differentiate into a simple squamous epithelium called mesothelium. As cranial, caudal, and lateral folding occurs during embryonic development, the convex region of the horseshoe-shaped coelom eventually takes a ventral position to the foregut and developing heart, forming the primordium of the pericardial cavity. The developing coelomic cavities, initially continuous with one another at the umbilicus, become separated into intra-embryonic and extra-embryonic regions. The intra-embryonic coelom gives rise to the pericardial, pleural, and peritoneal cavities, while the extraembryonic coelom is associated with the developing fetal membranes. As the embryo folds laterally, the coelomic cavity divides into two separate components. The pleural cavities, which surround the developing lungs, are initially part of the pleuropericardial cavity, alongside the developing heart. As mesodermal folds, known as pleuropericardial folds, grow medially, they enclose the common cardinal veins and the phrenic nerves. These folds eventually separate the pleuro-pericardial cavity into two parts: the pleural cavities dorsally, and the pericardial cavities ventrally. The developing lungs grow

Introduction

Nucleic acids, primarily DNA and RNA, are essential for the storage and expression of genetic information. Under physiological conditions, the amino and oxo tautomers of purines and pyrimidines predominate. Adenine a., guanine (G), cytosine c., thymine (T), and uracil (U) are the main building blocks of nucleic acids. Other building blocks include 5-methylcytosine, 5-hydroxymethylcytosine, pseudouridine, and N-methylated heterocycles. A -glycosidic bond connects D-ribose or 2-deoxy-D-ribose to the N-1 of a pyrimidine or the N-9 of a purine, with the syn conformers being the most common.

Nucleotides are the monomeric units of nucleic acids that contain a phosphate group attached to the sugar’s 3’ or 5’ hydroxyl. Extra phosphate groups form nucleoside diphosphates and triphosphates. These have high group transfer potential and help make covalent bonds. Cyclic phosphodiesters cAMP and cGMP act as second messengers. 3′ 5′ phosphodiester bonds link nucleotides to form polynucleotides, which have a directional 5′ and 3′ end. Four bases—A, G, C, and T—compose DNA, and hydrogen bonds (A to T, G to C) hold them together to form a double helix. Human DNA consists of approximately 3 billion base pairs organized into 23 chromosomes, encoding around 25,000 protein-coding genes and various non-coding RNAs (ncRNAs).

Introduction

In a historic landmark, Genentech, a young Californian Company pioneering in gene splicing (which includes recDNA technology, genetic engineering, gene transplantation, gene cloning), saw its stock price skyrocket form $35 to a staggering $89 within just 20 minutes of the New York Stock Exchange’s opening bell on October 15, 1980. This was marked as the fastest stock price growth ever witnessed on that exchange. The company’s success was attributed to the ground-breaking work it had been involved in producing human insulin through genetic engineering that offered a revolutionary alternative for diabetics allergic to the then traditional insulin of porcine origin. Genentech’s pioneering work in gene splicing has its roots in the early 1970s. In 1972, Stanley Cohen and Herbert Boyer were credited with creating the first recombinant DNA molecule. Their experiments demonstrated the ability to create recombinant DNA molecules that could be introduced into bacteria like E? coli, offering a foundation for future advancements in genetic engineering.

1. Particulate and duplicate nature of heredity factors or element was first demonstrated by
a) Bateson 
b) Mendel
c) Morgan 
d) Punnett
2. The particular site or position of a gene in a chromosome is known as
a) Genotype 
b) Phenotype
c) Locus 
d) Allele
3. Linkage group in swamp buffalo
a) 25 
b) 30
c) 24 
d) 26

For a researcher, laboratory is another home where he/she spends much time every day. As we take care of cleanliness, safety, and design of our home, we must take care on these aspects of laboratory too. It is the responsibility of the laboratory personnel to ensure cleanliness/safety of the laboratory. Since every laboratory chemical and equipment have the potential to cause harms if not used with appropriate precautions. Hence, as a laboratory user, it is our responsibility to follow the basic safety/biosafety rules and regulations set up by the Principal Investigator of the laboratory, Institutional Biosafety Committee, as well as by other regulatory authorities, if any. We must be aware of the general/personal protective measures, cleanliness and laboratory waste disposal prior to joining a research laboratory. In this chapter we will briefly discuss about personal safety, chemical safety, cleanliness, waste disposal, etc.

A. Personal Safety

1. Personal Protective Equipment (PPE)

Personal protective equipment (PPE) is special arrangement to protect the worker from specific hazards because of using a hazardous substance. PPE does not reduce or eliminate the hazard, but protects the wearer from exposure to hazardous material. PPE should not be reused or brought outside the laboratory as these might increase the risk of spread hazardous material or contamination. Used PPE must be kept inside the laboratory in a designated waste storage area adjacent to the work area.

1.     Determination of lmax
    
2.     Verification of Beer-Lambert Law
    
3.     Estimation of Carbohydrate by Anthrone Method
    
4.     Estimation of Reducing Sugar by Di Nitro Salicylic (DNS) Acid
    
5.     Estimation of Protein by Biuret Method
    
6.     Estimation of Protein by Lowry’s Method
    
7.     Estimation of Protein by Bradford Method
    
8.     Estimation of Cholesterol
    
9.     Estimation of DNA
    
10.     Estimation of RNA
    
11.     Determination of iso Electric Point of Amino Acid

Introduction

Most glands of the body deliver their secretions by means of ducts. These are called exocrine glands. There are few glands that produce chemical substance that they directly secrete into the blood stream for transmission to various target tissues. These are ductless or endocrine glands. The secretions of endocrine glands are called as hormones. Therefore, it is a chemical substance which is produced in one part of the body, enters the circulation and is carried to distant target organs and tissues to modify their structures and functions. Hormones are stimulating substances and act as body catalysts. The hormones catalyze and control diverse metabolic processes. Despite their varying actions and different specificity’s depending on the target organ, the hormones have several characteristics in common with enzymes. They act as body catalysts resembling enzymes in some aspect. They are required only in small quantities. They are not used up during the reaction. They differ from enzymes because they are produced in an organ other than that in which they ultimately perform their action. The major hormone secreting glands are as follows— Pituitary, Thyroid, Parathyroid, Adrenal, Pancreas, Ovaries and Testes. The hormones are classified into following main classes according to the chemical structures:

Introduction

Immunology deals with the body defence system consisting of various cells and biomolecules that prevents entry of foreign infectious and toxic agents by different mechanisms. The mammalian immune system operates in two ways like innate or non specific immunity and adaptive or acquired or specific immunity. Innate part constitutes the physical (skin, hair, tears and mucous secretions) containing enzymes that prevents primarily entry of pathogen. It is the first line of defence action, very fast but not adequate. Adaptive form constitutes defensive cells and secreted immunoglobulins. It takes time to develop effectively, especially when the body sees the organism for the first time. Immunoglobulins (Ig) or antibodies are a group of proteins produced from B lymphocytes and plasma cells in response to the presence of any foreign substances. They are 5 basic types like M, A, G, E and D each with specific function. The system can produce antibody molecules, directed to about 1 million different kinds of antigens. All immunoglobulins have a similar basic structure.

1.     Plant Tissue Culture Laboratory
    
2.     Cleaning and Sterilization of Glass Wares
    
3.     Media Sterilization
    
4.     Media Composition and Media Preparation
    
5.     Callus Culture in Carrot
    
6.     Culture of Shoot Tip (Vanilla)
    
7.     Anther Culture of Datura
    
8.     Subculture of Carrot Callus
    
9.     Hardening of Plantlets
    
10.     Isolation of Protoplast from Plant Leaves

Introduction

Biochemistry is branch of life science which deals with the study of chemical reactions occurring in the living cells and organisms. The term biochemistry was first introduced by German chemist Carl Neuberg in 1903. Since biochemistry is associated with the biological reactions and energy changes associated with these reactions or transformations within the living cell, biochemistry may thus be treated as a discipline in which biological phenomenon are analysed in terms of chemistry. The branch of biochemistry for the same reason has been variously named as “Biological Chemistry” or “Chemical Biology”. Modern biochemistry has two branches descriptive and dynamic biochemistry. Descriptive biochemistry deals with qualitative and quantitative characterization of the various chemical components of cell and the dynamic biochemistry deals with the elucidation of the nature and the mechanism of reactions involving these chemical cell components.

Qualitative analysis of biological sample deals with the examination of the organic or inorganic cell associated components in order to determine its composition. It denotes the presence of various biomolecules, elements or groups of elements that are present in the sampling population. It is possible to determine whether a particular component is present or absent in a sample by performing a qualitative analysis of the sample. Qualitative analysis is the identification of elements, species and/or compounds present in a sample.

One of the most important aspects of describing distribution is the central value around which the observations are distributed. A statistical measure used for representing the centre of central value of a set of observations is known as “Measure of Central Tendency”. This central value is also called as ‘Average’. The commonly used measures of central tendency are as follows;

Design of Experiment was first elaborated by R. A. Fisher (1935).

• Design of Experiment: Proper allotment of treatments to the available experimental units.

• Treatment: It is the factor whose effect is to be studied. Example: Application of drugs, feeds, conditions, methods, etc.

• Experimental units: The subjects or individuals upon which an experiment is conducted.

Example: Laboratory animals like mice, rat, monkeys, primates; livestock like cattle, buffalo, sheep, goat, poultry; plants, a plot of land, etc.

Necessity of designing an experiment

1. To get maximum information from the available resources.

2. To know the effect of treatment on experimental units and to make comparison between treatments.

3. To know whether the difference between the effect of two treatments is significant or not.

4. A well designed experiment has a well defined method of statistical analysis of data.

5. To minimize error in the whole experimental procedure.

6. An ill designed experiment is not likely to give proper estimates of parameters and comparisons between treatments with desired precision even if the method of data analysis is very good.

7. The design of experiment is essential to get all the important treatment effects to be compared independently.

Metabolic fingerprinting and profiling provide powerful approaches for investigating global biochemical changes within biological systems. This chapter explains the principles of metabolic fingerprinting and profiling and distinguishes between broad, untargeted characterization and targeted analysis of selected metabolites. It discusses experimental design, sample preparation, analytical platforms, data preprocessing, normalization, statistical analysis, and multivariate approaches used to identify meaningful metabolic patterns. Techniques such as principal component analysis and related statistical methods help reveal differences between biological conditions. The chapter highlights applications in disease investigation, agricultural research, environmental studies, food analysis, and biotechnology, while emphasizing the importance of reproducible analytical procedures and appropriate interpretation of complex metabolomic datasets.

Climate change affects livestock through heat stress, water scarcity, unstable feed supplies, altered disease patterns and extreme weather. This chapter examines how artificial intelligence supports climate-smart and sustainable animal husbandry. Machine learning, predictive analytics and IoT-enabled monitoring can optimize feeding, detect disease, assess welfare and improve the use of water, energy and other resources. Intelligent technologies can also assist in reducing greenhouse-gas emissions and developing adaptive production strategies. The chapter evaluates the contribution of AI to productivity, climate resilience and environmental responsibility while addressing problems such as insufficient data, limited infrastructure, implementation costs and ethical concerns. Future integration with sustainable agricultural frameworks is also discussed.

Traditional livestock diagnosis is often reactive and may identify disease only after clinical symptoms become visible. This chapter introduces deep-learning methods for automated health monitoring, early disease detection and predictive analytics. Models analyse images, videos, body temperature, heart rate, activity patterns and historical health information. Convolutional neural networks extract visual features and classify diseases, while LSTM networks identify patterns in time-dependent physiological and behavioural data. Multimodal fusion improves the reliability of predictions by integrating different data sources. IoT-connected systems can generate real-time warnings and support timely intervention. The chapter compares deep learning with conventional approaches and evaluates accuracy, recall, false-negative rates and practical deployment.

Introduction to Statistics

The word statistics has been derived from Latin word “status”, the German word “statistik”, the Italian word “statistica” or the French word “statistique”. During early periods, it was used by emperors and kings only for collecting the information about state and other information which was needed about their people, their number, land, status of people, revenue of the state etc. Gradually, it meaning and uses extended and there onwards its nature changed.

Some scientist/ researchers were given definition of statistics as per time and place.

• An ancient date, A.L. Bowley gives some definitions according their use and place. He seems to be inadequate because these do not include all aspects of statistics. As per time, place or requirement, he gave three definitions of statistics:

• Statistics may be called the science of counting

• Statistics may rightly be called the science of average

• Statistics as the science of counting and average

Enzymes are biological catalysts that regulate biochemical reactions and control metabolic pathways. This chapter explains how metabolomics can contribute to the discovery and functional characterization of enzymes by identifying changes in metabolite concentrations associated with enzymatic activity. Comparative metabolomics, gene knockout experiments, stable-isotope labeling, and multi-omics integration are discussed as approaches for linking metabolites with enzyme functions. Analytical platforms such as GC–MS, LC–MS, and NMR, together with databases including KEGG, BRENDA, HMDB, and METLIN, support metabolite identification and pathway analysis. The chapter also considers experimental validation, bioinformatics, challenges associated with unknown metabolites, and future applications involving artificial intelligence and computational biology.