'Optimal Range' - is the climate conditions an organism (or concept) thrives at. Ex, I can live in 20-degree weather, but I am much better suited for 75-degree weather. It's the small part of the total tolerance range where an organism performs best.
What does'optimal range'mean in biology?
'Optimal Range' - is the climate conditions an organism (or concept) thrives at. Ex, I can live in 20-degree weather, but I am much better suited for 75-degree weather. It's the small part of the total tolerance range where an organism performs best.
What is an optimal range?
Using scientific evidence and clinical guidelines, an optimal range is based on whether a range is linked to better health and longevity.
What is the range of an organism?
native, geographic area in which an organism can be found. Range also refers to the geographic distribution of a particular species. moth larva that is a destructive pest to evergreen trees.
What are optimal ranges in blood tests?
What are optimal ranges? Even if your blood test results show that you’re in the normal range, they still might not fall in the range that’s optimal for your health and longevity — which is where optimal ranges come in. Optimal ranges are evidence-based ranges that are associated with the lowest risk of disease and mortality.
What is optimality in biology?
What is the evolution of metabolic pathways toward simplicity?
About this website
Whats the difference between tolerance range and optimal range?
If the conditions would go below or beyond the range, then the species would not survive. On the other hand, the term optimal range is used for describing the best condition within the tolerance range in which the species are the at their healthiest state.
What is an optimal range & a limiting factor?
1:376:29Limiting Factor and Range of Tolerance - YouTubeYouTubeStart of suggested clipEnd of suggested clipI put a definition here a limiting factor is the critical resource who supply determines theMoreI put a definition here a limiting factor is the critical resource who supply determines the population size of a given species in a given ecosystem.
What is ecological optimum?
The ecological optimum can be defined as a certain combination of environmental variables that is optimal for the existence, development, growth and reproduction of a taxon (Verbitsky and Verbitskaya 2007).
What is the zone between the optimal range and the limit of tolerance called?
Stress zones is at the end of optimal range in which very few individuals survive. Tolerance limits are upper and lower limits beyond which no individuals survive.
What is a limiting factor in biology?
A limiting factor is anything that constrains a population's size and slows or stops it from growing. Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources.
What is geographic range in biology?
Geographic range describes the spatial area where a species is found. Studies on the processes determining geographic range patterns address fundamental questions, which are very much at the heart of ecological research, on distribution and abundance of species.
Which one represents the range of conditions?
The ecological niche of an organismrepresents the range of conditionsthat it can tolerate the resources it utilises and its functional role in the ecological system. ... Environment: Environment is a sum total of all biotic and abiotic factors that surround and potentially influence an organism.
What is ecological tolerance?
(Capacity of an organism to tolerate certain conditions or changes to its environment, due to physiological and morphological properties.
What is ecological zone?
An Ecological Zone (EZ) is defined as: “A zone or area with broad yet relatively homogeneous natural vegetation formations, similar (not necessarily identical) in physiognomy. Boundaries of the EZs approximately coincide with the map of Köppen-Trewartha climatic types, which was based on temperature and rainfall.
What is meant by optimal environmental conditions for an organism?
Organisms maximize their fitness at an "optimal" environmental range, and can survive only short periods in environmental conditions that exceed a threshold in their "critical tolerance limits." Breadth of optimal environments, and the range of environments between critical limits vary depending on physiological ...
What is a range of tolerance?
It is defined as the difference between the highest and lowest values in a set of numbers, which is calculated by subtracting the lowest number from the highest number in the set.
What is tolerance in biology?
tolerance. 1. The ability to endure unusually large doses of a drug or toxin.
What is optimality in biology?
Optimality – the property of a system to maximize or minimize some function under given constraints – has been a central concept in many fields such as physics, computer science and engineering. In the realm of biology, natural selection leads to exquisite functional life forms all abiding to the laws of physics and chemistry yet show remarkable adaptation to the surrounding conditions. One manifestation of this process is that some characteristics of organisms can be shown to be close to optimally adapted to the constraints of their environment. This website and annotated collection aims to serve as a source of examples that will help discuss and disseminate this form of studying biological processes and inspire the analysis of other biological phenomena using these tools and perspectives.
What is the evolution of metabolic pathways toward simplicity?
Optimization of metabolism : the evolution of metabolic pathways toward simplicity through the game of the pentose phosphate cycle [ 8 ]: Previous theoretical studies on the pentose phosphate cycle (Melendez-Hevia et al., 1985, 1988, 1990) demonstrated that simplicity in metabolism, defined as the least possible number of enzyme reactions in a pathway, has been a target in biological evolution. Those results demonstrated that a process of optimization has occurred in the evolution of metabolism. However, the results also suggest a number of questions of general interest: (i) Why simplicity? What is the selective advantage of simplicity in metabolic pathways? (ii) How has simplicity been achieved? Can natural selection mechanisms solve the problems of combinatorial optimization in the design of metabolism? (iii) Are the reaction mechanisms of the pentose phosphate cycle (transketolase and transaldolase) the best suited for pentose-hexose interconversion
Why don't normal ranges take into account the large population research that looks at the association of certain ranges with
In addition, normal ranges don’t take into account the large population research that looks at the association of certain ranges with risks for disease and mortality. That’s mainly because there is not enough evidence for a causative link between an optimal level and health for it to guide decision making.
Why is it important to have a normal range for blood work?
For many tests, values within the normal range can be associated with an increased risk of mortality and certain diseases. This is why it’s important to establish optimal ranges for blood tests. Read on to see why normal ranges don’t always mean nothing is wrong, and which markers have deceptive normal ranges.
What is the normal triglycerides level?
Triglycerides. The normal upper limit for triglycerides is 150 mg/dL. But there is a lot of research showing that the upper limit should be much lower. When scientists reviewed 61 studies with over 726k people, levels below 90 mg/dL were associated with the lowest risk of mortality.
Can triglycerides be higher than optimal?
It can give you a false sense of security and prevent you from taking steps to improve your levels. If your triglycerides are higher than optimal, work with your doctor or with another healthcare professional to devise a strategy for improving your triglyceride levels and your overall health !
Is folate higher than the normal range?
This shows that the optimal lower limit for folate is much higher than the current normal lower limit, and is another reason why you shouldn’t rely on the established normal range to determine if your levels are truly healthy.
What is tolerance range?
Tolerance ranges of species. Abiotic (non-living) factors that influence where a species can live. Life is found almost everywhere on Earth, but it is not distributed evenly around the planet. Different species are found in different areas; some species have overlapping ranges, others do not. Each species has a set of environmental conditions ...
Why is the range of tolerance different for a generalist plant versus a specialist plant?
The range of tolerance is different for a generalist plant versus a specialist plant because generalist plants' tolerance curve would have been wider representing that it can support different conditions and specialist plants' tolerance graph would have been narrower meaning that it would support limited conditions.
What is the bell curve in biology?
If you draw a graph of how many individuals in a population live under which part of the range of any given factor, you almost always get a bell-shaped curve.
Do different organisms have different tolerance ranges?
This example points out an important aspect of tolerance ranges – different types of organisms have different tolerance ranges for the same factor. And in fact, the tolerance range of a single individual may change over time; individuals of a certain species of salmon, for example, start life in a freshwater stream, migrate out to the open ocean, ...
Can a species survive if there is too much or too little of the factor?
In other words, they can tolerate (or survive within) a certain range of a particular factor, but cannot survive if there is too much or too little of the factor. Take temperature, for example.
Why are normal reference ranges important?
Summary. Normal reference ranges are still very useful and allow healthcare professionals to make informed decisions about your health. But if you really want to optimise your health, optimal ranges can be really useful.
What is the optimal vitamin D level?
So the evidence suggests that the optimal range for vitamin D is actually between 75 nmol/L and 100 nmol/L — this is associated with ...
What is a reference range?
Reference ranges are used to interpret your blood test results and can tell you whether your levels are normal or abnormal. Normal reference ranges are a range of values that are considered normal for a healthy person. These values are usually based on the range that 95% of a healthy population fall into. A small number of reference ranges are ...
What are the limitations of a reference range?
There are a number of limitations with normal reference ranges, including: 1 they’re very black and white and they don’t reflect how complex health is 2 they usually don’t take into account how a value links to your risk of developing a disease or your life expectancy 3 the studies the ranges are based on often don’t include many people 4 some of the population used to determine a range aren’t healthy
Can ranges be based on many people?
the studies the ranges are based on often don’t include many people . some of the population used to determine a range aren’t healthy. A lot of these limitations can be overcome using optimal references ranges.
What is a Reference Range?
A reference range, sometimes called “normal values,” is a set of numbers representing the range of typical results. Each individual lab can establish their own reference range by calculating the range of values (after excluding the highest and lowest values) among a sample of “healthy” patients from within the population the lab serves.
Does a Reference Range Indicate the Optimal Range for Health?
Simple answer: NO. A reference range indicates the range of typical results found in the population the lab serves but does not necessarily indicate the optimal range for health. For example, a lab’s reference range for vitamin D levels may be 20 to 80 ng/ml.
Other Nutrients Follow a Similar Concept
Omega-3 testing provides another example of the difference between the reference range and the optimal range for health. The lab used by GrassrootsHealth for the Omega-3 Index has a reference range for Omega-3 Index of 2.9% to 12.9%. However, studies show that an Omega-3 Index of at least 8% is important for heart, brain, joint, and eye health.
Do You Have Specific Health Concerns?
By joining the GrassrootsHealth projects, you are not only contributing valuable information to our study, but you are also gaining knowledge about how you could improve your own health through measuring and tracking your nutrient status, and educating yourself on how to improve it.
What does the Research Say about Vitamin D & COVID-19?
It’s TIME to start saving lives! If you can help PREVENT the majority of the death, it’s time! What’s it costing you/us not to take action NOW?
NEWS ALERT
The first Randomized Controlled Trial on vitamin D and COVID-19 has shown a 96% lower risk of ICU admission for those receiving vitamin D (as 25 (OH)D to quickly boost vitamin D blood levels) along with the standard treatment, compared to those receiving standard treatment alone.
How can I track my nutrient intake and levels over time?
To help you track your supplement use and nutrient levels, GrassrootsHealth has created the Personal Health Nutrient Decision System called
What is a species range?
Vocabulary. A species range is the area where a particular species can be found during its lifetime. Species range includes areas where individuals or communities may migrate or hibernate. Every living species on the planet has its own unique geographic range. Rattlesnake s, for example, live only in the Western Hemisphere, ...
What factors determine the range of a species?
Factors Contributing to Species Range. Several factors determine species range. Climate is one important factor. For example, polar bears ( Ursus maritimus) travel on sea ice, so the limit of their range is determined by the amount of sea ice that forms in the winter.
Where do living things get their nutrients?
Living things can only survive in regions where they can find food. The giant panda ( Ailuropoda melanoleuca) obtains almost all of its nutrient s from various species of bamboo, especially dragon’s head bamboo ( Fargesia dracocephala ).
What is optimality in biology?
Optimality – the property of a system to maximize or minimize some function under given constraints – has been a central concept in many fields such as physics, computer science and engineering. In the realm of biology, natural selection leads to exquisite functional life forms all abiding to the laws of physics and chemistry yet show remarkable adaptation to the surrounding conditions. One manifestation of this process is that some characteristics of organisms can be shown to be close to optimally adapted to the constraints of their environment. This website and annotated collection aims to serve as a source of examples that will help discuss and disseminate this form of studying biological processes and inspire the analysis of other biological phenomena using these tools and perspectives.
What is the evolution of metabolic pathways toward simplicity?
Optimization of metabolism : the evolution of metabolic pathways toward simplicity through the game of the pentose phosphate cycle [ 8 ]: Previous theoretical studies on the pentose phosphate cycle (Melendez-Hevia et al., 1985, 1988, 1990) demonstrated that simplicity in metabolism, defined as the least possible number of enzyme reactions in a pathway, has been a target in biological evolution. Those results demonstrated that a process of optimization has occurred in the evolution of metabolism. However, the results also suggest a number of questions of general interest: (i) Why simplicity? What is the selective advantage of simplicity in metabolic pathways? (ii) How has simplicity been achieved? Can natural selection mechanisms solve the problems of combinatorial optimization in the design of metabolism? (iii) Are the reaction mechanisms of the pentose phosphate cycle (transketolase and transaldolase) the best suited for pentose-hexose interconversion
Optimality in Biology – A Collection of Annotated Examples
- Motivation and definition
Optimality – the property of a system to maximize or minimize some function under given constraints – has been a central concept in many fields such as physics, computer science and engineering. In the realm of biology, natural selection leads to exquisite functional life forms all … - Optimality and random drift
It is well appreciated that neutral drift has a central importance in the dynamics of properties such as gene frequencies in a population as discussed in the inspiring work of Kimura. There are many other cases where neutral drift in properties and the importance of randomness are established…
Examples - Molecular
- (we aim to have a concise description of what was achieved in each set of examples. Currently there is the abstract of the respective papers):
More Examples
- Life history properties: Age of reproductive maturity, number of eggs in a clutch, etc. [21]
- Vascular branching- Murray's law stating that in a branching from a vessel of radius r1 to two vessels of radius r2 and r3 there is a relationship between them where r1^3=r2^3+r3^3. This can derive...
- Glycogen as energy storage vehicle(Cornish Bowden 2004 book Ch. 6, E Melendez-Hevia refs.)
- Life history properties: Age of reproductive maturity, number of eggs in a clutch, etc. [21]
- Vascular branching- Murray's law stating that in a branching from a vessel of radius r1 to two vessels of radius r2 and r3 there is a relationship between them where r1^3=r2^3+r3^3. This can derive...
- Glycogen as energy storage vehicle(Cornish Bowden 2004 book Ch. 6, E Melendez-Hevia refs.)
- Metabolism - the pentose phosphate pathway and the Calvin cycle(Cornish Bowden 2004 book Ch. 5, E Melendez-Hevia refs.) - The steps in these two pathways perform transformations with some well defi...
Books
- Optimality Principles in Biology - Robert Rosen
Optimality Principles in Biology, Robert Rosen, Butterworths, London, 1967 - The Pursuit of Perfection - Athel Cornish-Bowden
The Pursuit of Perfection - Aspects of Biochemical Evolution, Athel Cornish-Bowden, Oxford University Press, 2004 In The Pursuit of Perfection the author explains how the biochemical processes that occur in living cells, long thought to be evidence of intelligent design rather than …
References
- Parker G.A. and Smith J.M. Optimality theory in evolutionary biology. Nature 1990 27-33. [Parker-Nature-1990]
- http://cs.calstatela.edu/wiki/images/9/9b/Silver.pdf [Way-conf-2007]
- Dekel E and Alon U. Optimality and evolutionary tuning of the expression level of a protein. Nature. 2005 Jul 28;436(7050):588-92. DOI:10.1038/nature03842 |PubMed ID:16049495 | Hu…
- Parker G.A. and Smith J.M. Optimality theory in evolutionary biology. Nature 1990 27-33. [Parker-Nature-1990]
- http://cs.calstatela.edu/wiki/images/9/9b/Silver.pdf [Way-conf-2007]
- Dekel E and Alon U. Optimality and evolutionary tuning of the expression level of a protein. Nature. 2005 Jul 28;436(7050):588-92. DOI:10.1038/nature03842 |PubMed ID:16049495 | HubMed [Dekel-Nature...
- ISBN:9781584886426 [Alon-Introduction-Systems]