85 results found

Search Results for: maximum

Vmax

Vmax Definition Vmax is the maximal reaction rate or velocity of an enzymatically catalyzed reaction when the enzyme is... Read More

Biotic potential

When we look at the different forms of life, we often wonder how they have continued to exist one generation after another.... Read More

Maximum temperature

maximum temperature In bacteriology, denoting a temperature above which growth will not take... Read More

Carrying capacity

Carrying Capacity Definition What is carrying capacity? In biology and environmental science, the carrying capacity of a... Read More

Residual volume

Residual volume is a term that is most often seen in lung physiology where it is defined as the amount of air remaining in... Read More

Environmental resistance

Environmental Resistance Definition Environmental resistance is such a process in which certain different elements or... Read More

Agonist

What is an Agonist? In biology, an "agonist" is the "doer of an action". Opposite of it is the antagonist, which opposes... Read More

Limiting factor

Limiting Factor Definition A limiting factor refers to any of the factors (variables) in an environment capable of limiting... Read More

Shelfords Law of Tolerance

Definition noun It is a law stating that a certain organism’s survival and existence depend upon the multifaceted set of... Read More

Darwinian fitness

Darwinian Fitness Definition Darwinian fitness refers to the measure of an individual organism's or genotype's reproductive... Read More

Dissolved oxygen

Definition noun The amount of free oxygen dissolved in water, expressed in mg/L, parts per million (ppm), or in percent of... Read More

Actions of Caffeine in the Brain with Special Reference to Factors That Contribute to Its Widespread Use

IV. Actions of Caffeine on Brain Functions and Behavior Having discussed the molecular and neuronal actions of caffeine,... Read More

Primary productivity

Planet Earth is home to different types of life forms ranging from microscopic bacteria to giant whales and elephants. To... Read More

Achromatic

Achromatic (Science: microscopy) Literally, colour-free. A lens or prism is said to be achromatic when corrected for two... Read More

Kcat

Definition noun Kcat (1) First-order rate constant, or the catalytic constant is a measure of Vmax / Et expressed in units... Read More

SENI Biometric Analysis on the extinct Scincidae species: Macroscincus coctei (underlined)

Brian L. Schnirel Leeway Corucia Research Center (LCRC) Courtesy: Polyphemos (2004)   Introduction: It has been... Read More

Enzyme

An enzyme is a biomolecule that can be synthesized biologically (naturally occurring) or through other processes... Read More

Relative fitness

Definition noun A measure of biological fitness wherein the reproductive rate (of a genotype or a phenotype) is relative to... Read More

Peristalsis

What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More

Fecundity

Fecundity Definition The meaning of fecundity is the reproductive rate (fecundity rate) or the performance of an individual... Read More

Survival of the fittest

When we talk about evolutionary processes, the usage of the phrase "Survival of the fittest" has been very common in... Read More

Thermometer

thermometer (Science: physics) An instrument for measuring temperature, founded on the principle that changes of temperature... Read More

Osteon

What is an Osteon? In osteology (the study of bony structures and skeleton), the osteons (or Haversian systems) are the... Read More

Oxyhemoglobin

Definition noun, plural: oxyhemoglobins A bright red hemoglobin carrying oxygen molecule Supplement One of the main... Read More

Cytokinin

Plants require growth hormones for their regulated growth. Plant growth hormones or regulators (PGRs) are small organic... Read More

Sarcolemma

Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More

Genetic Mutations

Reviewed by: Mary Anne Clark, Ph.D. Genetic Mutations Genetic mutations are inherited variations in an... Read More

Muscle fatigue

Definition noun (physiology) A condition of the muscle in which its capacity to produce maximum voluntary action, or to... Read More

Antagonistic Muscle

Definition of Antagonistic Muscle What does the term “antagonistic” mean? As the name suggests, the word antagonistic... Read More

Photolysis

Photolysis Definition We define photolysis as a chemical process in which chemical compounds or molecules are split into... Read More

Threshold limit value

threshold limit value The maximum concentration of a chemical recommended by the American Conference of government... Read More

Non-Mendelian Inheritance

Reviewed by: Mary Anne Clark, Ph.D. The inheritance patterns seen in Mendel's monohybrid and dihybrid crosses... Read More

Population Regulation in an Ecosystem

Darwin focused some of this work in regards to the population size of a species, and what factors may affect them. He... Read More

Apocrine gland

The human body is a complex assemblage of many different organs, systems, glands, bones, and tissues. Weighing any one over... Read More

Regulation of Organic Metabolism, Growth and Energy Balance

Organic Metabolism Events of Absorptive and Post-absorptive States. The absorptive state is the period during which... Read More

Krebs cycle

Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, is a fundamental metabolic pathway that... Read More

Circulation

Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More

Vascular Plants: Ferns and Relatives

These plants are seedless plants, but unlike the bryophytes, they do have vascular tissue (xylem and phloem). Because of the... Read More

Density dependent factor

Density-dependent factors are the limiting factors of an ecosystem that regulate population growth in a density-dependent... Read More

Aerotolerant

Aerotolerant Definition The term "aerotolerant" pertains to an organism that does not require oxygen for growth but can... Read More