55 results found

Search Results for: situation

Thalassophobia

Among many psychological and psychiatric disorders, one is the fear of the ocean and the fear of deep water, which in... 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

Neutral mutation

Neutral Mutation Definition What is a neutral mutation? Neutral mutations are the alterations in the DNA that are... Read More

Mitochondrial DNA – hallmark of psychological stress

We often hear that stress can be unsettling as it could make us ill when it becomes chronic and overwhelming. However, is... Read More

Theory

Theory Definition In science, a theory is a scientific explanation of a phenomenon. By scientific, it means it is an... Read More

Psychiatry & Mental Disorders

The Definition of Mad When someone says 'mental disorder' many people associate it with madness. This is truly not the... Read More

Isotonic

Isotonic Definition What does isotonic mean? The term "isotonic" is used in physiology, anatomy, and physical chemistry.... Read More

Incomplete dominance

Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More

Feedback mechanism

Feedback Mechanism Definition What is a feedback mechanism? A feedback mechanism is a physiological regulation system in a... Read More

Oxygen Debt

A cumulative deficit of oxygen resulting from intense exercise; the deficit must be made up when the body returns to rest.A... Read More

Adrenaline

A catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve... Read More

Univalent Chromosome

A chromosome that fails to pair with another during the prophase stage of meiosis, and therefore does not exchange genetic... Read More

Sequence homology

sequence homology (Science: molecular biology) Strictly, refers to the situation where nucleic acid or protein sequences are... Read More

Adaptive behaviour

Adaptive behaviour Any behaviour that enables an organism to adjust to a particular situation or... Read More

Positive feedback

Positive Feedback Definition Each mechanism of the body like temperature, blood pressure, and levels of specific nutrients... Read More

Environmental resistance

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

Buck’s traction

Buck's Traction Definition Buck's traction for femur fracture is very helpful. It can be utilized in the treatment and... Read More

Silent mutation

A mutation is a change in the nucleotide sequence of a gene or a chromosome. When there is only one nucleotide involved, it... Read More

Cell differentiation

Cells are often described as the building blocks of life as they are the smallest unit used to build up organisms. Cells can... Read More

Depolarization

Depolarization is the removal of polarity by a process or action. It might also be used to describe how such activity leads... Read More

Density dependence

Definition noun (population ecology) An effect in which the intensity changes with the increasing population density, e.g.... Read More

Leaves

Leaves are highly efficient solar energy converters. They capture light energy and through the process of photosynthesis.... Read More

The Evolution of Cell Organelles

The previous tutorial page noted the emergence of protists, organisms that possessed a distinct cell nucleus and contained... Read More

Freshwater Producers and Consumers

There are four main constituents of the living environment that form the freshwater ecosystem, they are as follows. ... Read More

Examples of Natural Selection

Reviewed by: Mary Anne Clark, Ph.D. Darwin's Finches Darwin's finches are an excellent example of the way in... Read More

Biological Cell Defense

Organisms must find a means of defense against antigens such a viruses described on the previous tutorial. If this was not... Read More

Plant Cell Defense

Hydrogen Peroxide Plants release hydrogen peroxide in response to the presence of a fungal invasion, which attacks by... Read More

Intermediate host

Intermediate Host Definition When looking at the relationships amongst different biological members of our biosphere, we... Read More

Robbins & Cotran Pathologic Basis of Disease (7th Ed) by V. Kumar et al.

Robbins & Cotran Pathologic Basis of Disease, Seventh Edition  ... Read More

Avoidance-avoidance conflict

Definition (psychology) A psychological conflict or a situation of indecision and vacillation when an individual has to... Read More

Lanugo

What is Lanugo? Lanugo is the delicate and downy hair that covers a fetus within the uterus (womb). It is very fine hair.... Read More

Thinking

thinking Definition 1: mental activity, not predominantly perceptual, by which one apprehends some aspect of an object or... Read More

Learning

Learning 1. The acquisition of knowledge or skill; as, the learning of languages; the learning of telegraphy. 2. The... Read More

Movement

movement 1. The act of moving; change of place or posture; transference, by any means, from one situation to another;... Read More

Regulation

Regulation 1. (Science: biology) The adaption of form or behaviour of an organism to changed conditions. 2. (Science:... Read More

Behaviour

Definition noun The observable response or reaction of an organism, an individual, or a system to a... Read More

Approach-approach conflict

Definition (psychology) A psychological conflict or a situation of indecision where an individual is confronted having to... Read More

Approach-avoidance conflict

Definition (psychology) A psychological conflict or a situation of indecision and vacillation when an individual is... Read More

Susceptible

Resistance, vulnerability, sensitivity, tolerance, and susceptibility are some highly important terminologies across the... Read More

Nest

nest Origin: AS. Nest; akin to D. & G. Nest, Sw. Naste, L. Nidus, for nisdus, Skr. Nia resting place, nest; cf. Lith.... Read More