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Amwoga Khalwale
Cilia and microvili are two types of projections in the plasma membrane. Microvilli are microscopic cellular membrane protrusions that increase the surface area for absorption. Cilia on the other hand, are narrow and long hair like protuberances from the apical surface of some epithelial cells. Both microvilli and cilia consist of protein fibers that extend … Read more
Flagellum is a long, whip-like structure that helps some single-celled organisms move. It is composed of microtubules. Flagella help propel cells and organisms in a whip-like motion. They are found in all three domains of the living world, that is, archaea, bacteria and eukaryote. Flagella not only provide movement for bacteria but also provide a … Read more
Primary and secondary successions are the two types of Ecological succession. An ecological succession is the process of change in the species structure of an ecological community over time. Ecological succession in an ecosystem is caused by disturbances that create new environmental conditions. A disturbance is an ecosystem allows for sunlight, nutrients and habitat to … Read more
P-type and n–type semiconductor are both classification of extrinsic semiconductors. The major factor that generates a difference between p-type and n-type semiconductor is the material used in doping the intrinsic semiconductor (pure conductor). The n-type semiconductor material is formed by addition of group V elements (pentavalent impurity) to a pure conductor intrinsic semiconductor). Examples penta-valent … Read more
Wave motion transfers energy from one point to another without permanent displacement of the particles of the medium. A wave can be transverse or longitudinal depending on the direction of its oscillation. Below is a detailed explanation of differences between longitudinal and transverse waves in the context of their characteristics, behaviors, and real-world implications. Longitudinal … Read more
A shaper is a type of machine that uses linear relative motion between the work-piece and a single-point cutting tool to machine a linear toolpath. Shapers acan be categorized as standard, draw-cut, horizontal, universal, vertical, geared, crank, hydraulic, contour and travelling head. In most cases, a shaper has a horizontal arrangement. In a standard shaper … Read more
Hardwood comes from angiosperm trees that are not monocots. Hardwoods are usually found in broad-leaved temperate and tropical forests. They Have vessel elements that transport water throughout the wood, under a microscope these elements appear as pores. Examples of hardwood trees include: Softwood comes from gymnosperm trees which usually have needles and cones. Medullary rays … Read more
Velocity is defined as the speed of a moving object in a particular direction. Velocity of an object can also be described as the rate of change of its position with respect to speed and direction of motion (e.g 15 km/h to the south). Velocity is a physical vector quantity; both magnitude and direction are … Read more
What Is Distance? Distance is the total movement of an object without any regard to direction. We can also describe distance as to how much ground an object has covered despite its starting or ending point. What Is Displacement? Displacement can be described as the change in position of an object. It is a vector … Read more
Sometimes galvanic cells are just referred to as electrochemical cells while they are electrochemical cells; electrolytic cells are also electrochemical cells. Electrolytic and galvanic cells are however not the same. A galvanic cell is an electrochemical cell which converts chemical potential energy to electrical potential energy through a spontaneous chemical reaction. A galvanic cell has … Read more