According to the BBC, about 90 percent of the available energy in any trophic level is lost and becomes unavailable to higher trophic levels. For example, if the green plants in a habitat represent 1000 calories of food per square foot, the herbivores that eat these plants only represent about 100 calories per square foot. The predators that feed on these herbivores only represent about 10 calories per square foot.Continue Reading
In general, the more fertile the habitat, the more trophic levels it can support. Because energy is lost with each trophic level, the BBC explains that the number of possible trophic levels for any ecosystem is limited. Animals of the fourth trophic level only represent about one - one thousandth of the original energy, and by the time the fifth trophic level is reached, only about one - ten thousandth of the original energy remains in the food chain. Commercial farming operations try to minimize these inefficiencies to maximize profits.
Tropic levels lose energy due to several inefficiencies in the system. As noted by BioTopics.co.uk, some of these inefficiencies include the fact that plants and animals use energy during cellular respiration. Additionally, when animals eat food items, they rarely digest them completely, leading to wasted calories.Learn more about Biology
A biomass pyramid is a graphic illustration of the mass of organisms at each trophic level, which tends to get less as it goes up from producers to each level of consumer. There are inversions, however, where the mass of consumers is greater than the mass of producers.Full Answer >
Healthline states that low LDH levels indicate a lower than normal level of lactate dehydrogenase, an enzyme that aids in the conversion of sugar to energy, in the bloodstream. Low levels can be caused by genetic mutations or a large intake of vitamin C.Full Answer >
The formula for calculating a corrected reticulocyte count is RI = reticulocyte count (percent) x (measured hematocrit/normal hematocrit), where "RI" denotes a reticulocyte index, which is another name for a corrected reticulocyte count. This computation is typically done to obtain a more reliable value to accurately evaluate the bone marrow function of certain patients, as noted by Lab Tests Online.Full Answer >
Tissue and organ systems are different hierarchical levels of biological organization. Dr. Ingrid Lobo explains for Nature Education that biological organisms are systems of complexity. The basic functional unit of life is a single cell, and cells similar in function assemble to form tissue. An organ is a collection of different tissues joined as a functional unit; a group of organs working together to perform a specific task is an organ system.Full Answer >