The population of any region is characterised with respect to its growth rate. Exponential and Logistic growth models are two typical but important growth models that can be used to track the population's growth rate. Exponential growth is characterised by the rapid expansion of the population that is unaffected by any upper limit. Contrarily, logistic growth refers to a sustainable growth rate that has an upper limit of growth. The exponential growth model depicts an indefinite growth … [Read more...]
Difference Between Gap Junction and Tight Junction
The essential difference between the Gap junction and the Tight junction is that the first one is known to direct channel between cytoplasms of the adjacent cells, while the latter blocks the passage of solutes and water molecules between epithelial layers in vertebrates. Gap junctions are widely spread in the body of vertebrates, while tight junctions are only found in epithelial cells of the vertebrates. The social interactions among the cells of the multicellular organism are the most … [Read more...]
Difference Between Protozoans and Metazoans
The significant difference between the Protozoa and Metazoa is that the Protozoans are single-celled, though the Metazoans are multicellular. Secondly, the former one (Protozoa) belongs to the primitive type while the latter (Metazoans) belongs to the developed type of animal kingdom. Along with the variations in these two, there are few similarities also like, both the Protozans and the Metazoans are the Eukaryotic, which means they have well-defined organelles within the cell, that perform … [Read more...]
Difference Between Tubectomy and Vasectomy
Tubectomy is the sterilization process in the female that prevents the passage of eggs from reaching the uterus for implantation, and it is a small incision technique. Vasectomy is the sterilization process of the male that prevents the passage of sperms, and it is also the small incision technique. These two methods are known as permanent methods of sterilization or contraception. These methods are advised to any one of the partners either male or female as a way to prevent any more … [Read more...]
Difference Between Afferent and Efferent Neurons
The afferent or sensory nerve transfers the messages or signals from various organs to the spinal cord or brain. In contrast, efferent nerve or motor nerve transfer the messages or signals from the spinal cord or brain to multiple organs. That means their role is opposite, but they work in transferring signals between organs and spinal cord or brain. When you rub your palms, do exercises, hit a ball, there is the involvement of afferent and efferent neurons that are responding to the … [Read more...]
Difference Between Homologous and Analogous Structures
Homologous structures are such structures that do not show exact similarity in their appearance and function but are linked with their common ancestor. On the other hand, analogous structures are such structures that are similar in their function and appearance but do not have any links between their ancestors. The arms of humans, legs of dogs, are the common examples of homologous structure, where they must have diverged and evolved as different beings. The wing of insects, birds, bats and … [Read more...]
Difference Between Menarche and Menopause
The onset of the first menstrual period in the female adolescent is the menarche, while the termination or end of the menstrual cycle in the females is known as menopause. These are the two significant physical and biological milestone in the female's life. The studies on these events reveal that partially genetic and partially non-genetic factors (environmental factors, lifestyle, etc.) influence the age at which menarche and menopause in females. Although there are various medical issues … [Read more...]
Difference Between Dendrite and Axon
Dendrite refers to the 'Trees' in Greek, so these are the branched small extension of the nerve cell. Axon refers to the 'axis' in Greek, so axon is the long slender like protrusion of the neuron or nerve cell. Secondly, dendrite receives messages or information or electrochemical impulses from the external environment or other neurons, so they work as the input for the neuron. The role of the axon is to send messages or any information or electrochemical impulses to the external environment … [Read more...]
Differences Between Actin and Myosin
Actin is the collective molecules of protein from which thin bands are formed. On the other hand, Myosin is the group of protein by which thick bands are formed. Actin and Myosin are responsible for various types of cellular movements, and the most striking one is the muscle contraction, that provides the best-model to understand the role of actin and myosin. Now, to know the function of actin-myosin, it is necessary to gather bit information about muscles contraction. The cellular and … [Read more...]
Difference Between Autosomes and Sex Chromosomes
The chromosomes, apart from the sex chromosomes, are known as autosomes of an organism. The number of chromosomes varies from one organism to others. In humans, there is a total of 46 chromosomes or in pair of 23. Out of these, 2 are sex chromosome (XX or XY), and 44 are autosomes. Mice have in all 40 chromosomes, out of which 38 are autosomes, and 2 are sex chromosomes. Abnormalities in the chromosomes (autosomes or sex chromosomes) results in the retardation in growth of an organism or … [Read more...]