Have you ever wondered how the scent of perfume or hair freshener spreads throughout a room? Or how salt spreads over food in a saucepan without stirring? The concept behind these processes is called passive transport. Passive transport is the process by which particles or substances move from a region of high to low concentration …
How do different species attain their distinct identities as species? The short answer is through speciation which is a process(formation of distinct species) that relies on various mechanisms that isolate different groups of organisms so that they are prevented from reproducing hybrids. A prezygotic barrier or isolation is a situation in reproduction where the eggs …
DEFINITION: Facilitated diffusion is a passive transport process where specific molecules move across a cell membrane with the assistance of transport proteins, following a concentration gradient without energy expenditure. EXPLANATION: A cell is like a busy factory that needs input supplies to come in and waste thrown out. Like a factory with a wall, windows, …