Learn the difference between null hypothesis and alternative hypothesis with definitions, symbols, examples, importance, and applications in biology research.
When an object moves in a circular path, two important forces come into play — centripetal force and centrifugal force. Centripetal force is a real force that pulls an object towards the center of its circular path. Centrifugal force is a fictitious (pseudo) force that seems to push an object outward, away from the center.
The Bunsen burner is one of the most common and essential pieces of laboratory equipment. It produces a controlled, smokeless, non-luminous flame used for heating, sterilization, and combustion in various scientific experiments.
Learn the differences between primary data and secondary data in biology with definitions, examples, advantages, disadvantages, and research tips.
Learn the key differences between quantitative and qualitative data in biology with definitions, examples, methods, pros & cons, and research tips.
Class 12 Biology Chapter 1 – Reproduction in Organisms with detailed notes! Includes NCERT-aligned explanations, diagrams of binary fission & pollination, and key concepts like asexual/sexual reproduction, fertilization, and embryogenesis. Perfect for CBSE board exams and NEET preparation.
The main differences between Innate and Adaptive Immunity lies in their response mechanisms and specificity. Innate immunity is the body’s first line of defense and provides a rapid, non-specific response to infections. It includes physical barriers (like skin), chemical barriers, and immune cells like macrophages. In contrast, adaptive immunity is specific to particular pathogens and develops over time, involving specialized cells like T and B lymphocytes that create memory for future immune responses.
The main differences between somatic and germ cells is their function and role in reproduction. Somatic cells are the body cells that make up the tissues and organs of an organism and are involved in growth, repair, and maintenance. Germ cells, on the other hand, are specialized cells that give rise to gametes (sperm and egg cells) and are involved in sexual reproduction.
The main differences between dominant and recessive alleles is how they affect the expression of a trait. A dominant allele is expressed in the phenotype even if only one copy is present (heterozygous condition), while a recessive allele is only expressed when two copies are present (homozygous condition).
The main differences between a chromosome and a chromatid lies in their structure and role during cell division. A chromosome is a single, condensed DNA molecule containing genetic information. Before cell division, each chromosome is replicated, resulting in two identical copies. Chromatid refers to one of these identical copies of the chromosome.