The difference between colloid and solution is due to the properties like the solubility of particles, chemical nature and light scattering property. Colloids form when the particles (diameter from 1-1000 nm) are suspended in the dispersion medium. Oppositely, a true solution forms when the solute particles (diameter less than 1 nm) completely dissolve in the …
Bacterial transcription occurs in the cytoplasm. Transcription merely refers to the mechanism of mRNA synthesis complementary to the DNA template strand. The whole process is regulated enzymatically by the RNA polymerase holoenzyme. The study of transcription in prokaryotes is quite simple than the eukaryotic transcription. Besides RNA polymerase, prokaryotic transcription uses some protein factors that …
Seed dispersal is an essential mechanism through which spermatophytes or seed-bearing plants disperse their seeds via dispersal agents like wind, water, fruit explosion and animals. Seeds disperse into new sites where they grow or germinate under favourable conditions. Seeds first grow into seedlings and later into well-developed plants and trees, thereby providing food, shelter and …
Nastic movement is another form of curvature movement shown by some members of plants. It occurs in response to diffuse external stimuli. A stimulus that does not affect the plant’s orientation is called a diffuse stimulus. The direction of response in the nastic movement is independent of stimuli direction. Nastic movement is also referred to …
The difference between anabolism and catabolism is mainly characterized due to the difference in the types of substrates participating, types of products forming and the type of metabolic phase. Small monomers function as the substrate molecules in anabolism, whereas large and complex polymers serve as the substrate molecules in catabolism. Anabolic pathways typically form complex …
Ex-situ biodiversity conservation refers to one of the approaches of conserving biodiversity that ensure the survival and sustainability of endangered plants and animal species outside their native habitat. It provides an artificial environment for diverse plants and animals similar to their actual growth conditions. It is also termed as “Off-site conservation”. Human activities and some …
Lipid aggregates exist in varying forms starting from monolayer to structures like lamellar, tubular, cubic etc. The different structures or aggregates of lipids are known as phases. Largely, lipids are hydrophobic or water-insoluble. Lipids assemble into microscopic aggregates in the aqueous environment because of their amphipathic nature. They possess both hydrophilic (a polar head) and …
Tropic movements in plants are the types of paratonic or induced movements. Paratonic movements include both tropic and nastic movements. In this module, we will only discuss the tropic movements in plants. Various external stimuli or environmental factors like light, gravity, water, temperature, and other factors influence tropic movement. The phenomenon of tropic movements in …
A pedigree analysis chart provides an important tool to study the inheritance of genes. It also gives precise information about the family members through diagrammatic representation. Sometimes, it is also known as the “family or genealogic tree“. A pedigree chart uses internationally accepted symbols, lines, numbers and letters To illustrate different individuals, their interrelationship, the …
The difference between osmotic pressure and osmotic potential is characterized by the properties like a chemical equation, effect of solute particles and types of system where it develops. The chemical equation for the osmotic pressure is equal to the product of molar concentration, gas constant and temperature. In contrast, the chemical equation for the osmotic …
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