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Temperature in Biological Definition

Dialysis

... levels. Patients weigh themselves, and measure temperature and blood pressure daily to determine whether the ... Standing and sitting blood pressures are taken. temperature is taken. Access is setup. For patients with a ... pressure, and weight are all measured again. temperature changes may indicate infection. BP discussed ...

Cold-blooded

... such as solar radiation . As the environmental temperature increases, the animal's metabolic rate will ... growth, repair and reproduction. Types of temperature control Examples of this temperature control include: Snakes and lizards ...

Warm-blooded

... ) animal is one that can keep its core body temperature at a nearly constant level regardless of the temperature of the surrounding environment (that is, to ... , warm-blooded animals control their body temperature by regulating their metabolic rates . ...

Gradient

... Examples Consider a room in which the temperature is given by a scalar field φ , so at each point ( x , y , z ) the temperature is φ( x , y , z ) . We will assume that the temperature does not change in time. Then, at each point in ...

Homeostasis

... When sunlight is plentiful and atmospheric temperature climbs, the phytoplankton of the ocean surface ... increase the atmospheric albedo and lower the temperature of the atmosphere. Biological homeostasis ... to sustain life; these include properties like temperature , salinity , and acidity , and the ...

Polymerase chain reaction

... bacteria that grow in geysers at a temperature of over 110C. The DNA-Polymerase taken from these ... cools the reaction tubes within it to the precise temperature required for each step of the reaction. To ... of the length of the primers and their melting temperature (Tm) depends on a number of considerations. The ...

Primer

... of the length of the primers and their melting temperature depends on a number of considerations. The melting (or annealing) temperature of a primer is defined as the temperature below which the primer will anneal to the DNA ...

Thermoregulation

... is the ability of an organism to keep its body temperature within certain boundaries, even when temperature surrounding is very different. This process is ... that thermoregulates is one that keeps its temperature constant and adapts to ...

Activation energy

... always be a certain number with enough energy at any temperature, because temperature is a measure of the average energy of the system - individual molecules can have more or less energy than the average. Increasing the temperature increases the proportion of molecules with more energy than the activation ...

Alcohol

... glucose from the hydrolysis of starch , in the presence of yeast and temperature of <37C to produce ethanol. Direct hydration : using ethene or other ... of distilled crude oil . Uses a catalyst of phosphoric acid under high temperature and pressure. Methanol is manufactured from synthesis gas , where ...

Diffusion

... if there is a gradient : for example in thermal diffusion, if the temperature is constant, heat will move as quickly in one direction as in the other, ... the rate of transport is governed by the thermal conductivity and the temperature gradient. See also Active transport Barotropic vorticity ...

Ethyl alcohol

... Liver cirrhosis. Flash point 17C (62.6F) Autoignition temperature 425C (797F) Explosive limits 3.5-15% More ... otherwise stated, all data was produced under conditions of standard temperature and pressure . Disclaimer and references Ethyl alcohol , ...

Experimental evolution

... time period of seven years ( 1880 - 1886 ). Dallinger slowly increased the temperature of the incubator from an initial 60 °F up to 158 °F. The early cultures had shown clear signs of distress at a temperature of 73 °F, and were certainly not capable of surviving at 158 °F. ...

Fermentation

... process. Mashing usually takes 1 to 2 hours, and during this time various temperature rests activate different enzymes depending upon the type of malt being ... , which are widely used in North American beers. Finally, a mash rest temperature of 149 to 160 F (65 to 71 C) is used to convert the starches in the malt ...

Abiogenesis

... of the phrase omne vivum e vivo to the microscopic world, and there still remain a few belated supporters of abiogenesis. Subjection to the temperature of boiling water for, say, half an hour seemed an efficient mode of sterilization, until it was discovered that the spores of bacteria are so ...

Bacterium

... bacteria. See: endosymbiotic theory . Microorganisms are widely distributed and are most abundant where they have food, moisture, and the right temperature for their multiplication and growth. They can be carried by air currents from one place to another. The human body is home to billions of ...

Carolus Linnaeus

... Venus glyphs as the symbol for male and female . Linnaeus was instrumental in the development of the Celsius (then called Centigrade ) temperature scale, inverting the scale that Anders Celsius had proposed with 0 as the boiling point of water, and 100 as the freezing point. His picture can ...

Chromatography

... the following equation: K is assumed to be independent of concentration, and can change if experimental conditions are changed, for example temperature is increased or decreased. As K increases, it takes longer for solutes to separate. For a column of fixed length and flow, the retention time ( t ...

Electrophysiology

... require low impedance measurements and no ionic contribution from the microelectrode, the chloride solution is replaced with cerralow, a low melting temperature alloy. The tip is electroplated with soft gold and platinum black, from chloroplatinic acid. Electrodes of this type are used to measure electrical ...

Equilibrium

... Thermodynamic equilibrium , the state of a system in which its internal processes cause no net change in its macroscopic properties (such as temperature and pressure). In economics , static equilibrium and general equilibrium Nash equilibrium in game theory, an optimum strategy for all ...

Bacterium

... bacteria. See: endosymbiotic theory . Microorganisms are widely distributed and are most abundant where they have food, moisture, and the right temperature for their multiplication and growth. They can be carried by air currents from one place to another. The human body is home to billions of ...

Fick's law of diffusion

... law gives rise to the formula It states that the rate of diffusion of a gas across a membrane is Constant for a given gas at a given temperature by an experimentally determined factor, K Proportional to the surface area over which diffusion is taking place, A Proportional to the ...

Herpetology

... Herpetology deals with what are called the cold-blooded tetrapods , that is, those land vertebrates which are ectothermic (deriving their body temperature from their environment) rather than endothermic (deriving their body heat from an independent, internal source). This distinction applies to most ...

Kinetic energy

... as kinetic energy Heat is a form of energy due to the total kinetic energy of molecules and atoms of matter. The relationship between heat, temperature and kinetic energy of atoms and molecules is the subject of statistical mechanics . Heat is more akin to work in that it represents a change in ...

Nutrition

... possible, since undiscovered but possibly essential nutrients may be thereby removed, or toxins may be added or produced through processing and high temperature cooking. Also processing can replace some of the mechanical/biochemical body processes which are essential for full digestion, and hence good ...

Osmosis

... the case of an ideal solution the reduction in chemical potential corresponds to: where R is the ideal gas constant , T is the temperature and x 2 is the solute concentration in terms of mole fraction . Most real solutions approximate ideal behavior for low solute concentrations ...

Skin

... in small amounts. Excretion: The concentration of urea is 1/130th than that of urine. Excretion by sweating is at most a secondary function to temperature regulation. Heat regulation: The skin contains sebaceous glands and smooth arrector pili muscles . Aging and disease As skin ages, it ...

Turgor

... a dilute solution can be calculated using the formula where M is the molarity R is the molar gas constant T is absolute temperature (i.e. measured in kelvin ). Note the similarity of the above formula to the ideal gas law . See also Pfeffer cell cell wall ...
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