Sourav Pan
33 min read 
What Is a Peptide Bond? Definition of Peptide Bond A peptide bond is a covalent bond formed between the α-carboxyl group of one amino acid and the α-amino group of another, resulting in the release of a water molecule. This bond links amino acids together in a peptide or protein chain and is characterized by … Read more
47 min read 
What are Amino Acids? Definition of Amino Acids Amino acids are organic compounds that serve as the building blocks of proteins. They consist of carbon, hydrogen, and nitrogen atoms and play essential roles in the proper functioning of living organisms. List of 20 Amino acids with the chemical formula Alanine C3H7NO2 Leucine C6H13NO2 Aspartic Acid … Read more
16 min read 
What is Membrane Permeability? Cell Membrane Structure The cell membrane, often referred to as the plasma membrane or biological membrane, plays a crucial role in maintaining the integrity of the cell by separating its interior from the external environment. Its structure is vital for selective permeability and fluidity, allowing the cell to regulate its internal … Read more
20 min read 
What is Artificial Selection? Definition of Artificial Selection Artificial selection, or selective breeding, is the human-driven process of breeding plants or animals to promote desirable traits in offspring by selecting specific individuals with those traits to reproduce. Darwin’s Experiments With Artificial Selection Darwin’s experiments with artificial selection were pivotal in the development of his theories … Read more
19 min read 
What is Natural Selection? Definition of Natural Selection Natural selection is the process by which organisms with traits better suited to their environment tend to survive, reproduce, and pass those beneficial traits to future generations, leading to gradual evolutionary changes in a population. History of Natural Selection Natural selection, the central concept of Darwin’s theory … Read more
10 min read 
What is Continuing Evolution? Evolution as an Ongoing Process Evolution is a continuous phenomenon, where populations of organisms undergo various changes over time due to numerous biological processes. Understanding these processes is crucial for both students and educators, as they illustrate the dynamic nature of life on Earth. Below are key components that highlight the … Read more
10 min read 
What is Common Ancestry? The theory of common ancestry The theory of common ancestry posits that all life on Earth descends from a singular “universal common ancestor.” This foundational concept in evolutionary biology provides insight into the interconnectedness of all living organisms and how they have evolved over time through adaptation to their environments. Predictions … Read more
10 min read 
What is genetic variation? Definition of genetic variation Genetic variation refers to the differences in DNA sequences among individuals within a population, resulting in diverse traits. This variation arises from factors such as mutations, gene recombination during reproduction, and genetic drift, and it plays a crucial role in evolution and adaptation to changing environments. Types … Read more
21 min read 
What is Speciation? Definition of Speciation Speciation is the evolutionary process through which new, genetically distinct species arise from an existing species, often due to reproductive isolation and genetic differentiation between populations. This can occur via mechanisms such as allopatric or sympatric speciation. Factors Influencing Speciation Speciation, or the process by which new species arise, … Read more
31 min read 
What is gene expression, and how does it relate to cell specialization? Gene expression is a fundamental biological process through which the information encoded in a gene is utilized to produce functional products, primarily proteins. This mechanism plays a crucial role in cell specialization, often referred to as cell differentiation, wherein generic cells evolve into … Read more