38 results found

Search Results for: rats

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

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

New Zealand’s Unique Fauna

By: Maria Victoria Gonzaga In the previous lesson, we learned about the high biodiversity of New Zealand and how... Read More

Parasitism

Organisms depend on different sources of food to survive. Larger organisms like plants make their own food (autotrophs) and... Read More

Population Growth and Survivorship

By: Maria Victoria Gonzaga Previously, we learned about biodiversity and endemism. Now, let's look at the... Read More

Spermiogenesis

Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... Read More

Obligate parasite

Parasitism is a form of symbiosis that occurs between a parasite and its host. The parasite is the organism that generally... Read More

Community Patterns

By: Maria Victoria Gonzaga In the previous lesson, we learned what a population is, its attributes, and processes... Read More

Inbreeding

Inbreeding is a type of breeding or mating where closely related individuals with a common ancestor produce progenies with... Read More

Stock

stock group of organisms (all of the same species) that is genetically self-sustaining and isolated geographically or... 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

Humans are Omnivores – Evidence

A number of popular myths about vegetarianism sprung with no scientific basis. One example of such a myth is that man is... Read More

New Zealand’s Biodiversity

Written by: Maria Victoria Gonzaga Peer-reviewed by: Cathy Buntting, Ph.D. and Andrea Soanes Why is New... Read More

New Zealand’s Unique Geographical History

Written by: Maria Victoria Gonzaga Peer-reviewed by: Cathy Buntting, Ph.D. and Andrea Soanes New Zealand is... Read More

Coccidia

Coccidia (singular: coccidium) are sporozoans that live as parasites of the digestive tracts of certain animals. The... Read More

Balantidium coli

Definition noun A parasitic ciliate belonging to the family Balantiididae, and the causative agent of the balantidiasis... Read More

Vibrissa

Definition noun, plural: vibrissae (1) A whisker of an animal, e.g. cat (2) A long, slender, bristle-like feather at the... Read More

Flehmen response

Definition noun A behavior in certain animals wherein the animal curls back the upper lip thereby exposing the front teeth,... Read More

Amitosis

Definition noun, plural: amitoses A direct type of cell division wherein the nucleus and the cytoplasm go through a simple... Read More

Omnivorous diet

Definition noun A type of diet in which both animal and plant matter are the main food source Supplement An omnivorous diet... Read More

Natural reservoir

Definition noun A reservoir host harboring the pathogen but shows no ill effects and serves as a source of... Read More

Trophic level

In ecology, a trophic level pertains to a position in a food chain or ecological pyramid occupied by a group of organisms... Read More

Food chain

Everything is a cycle in life. The way organisms consume their food also follows a cycle. This is usually described as the... Read More

Pest

pest A general term for organisms (rats, insects, etc.) which may cause illness or damage or consume food crops and other... Read More

Exotic species

Exotic Species Definition What is an exotic species? In biology, an exotic species refers to a plant species or an animal... Read More

Metabolic Water

Definition noun The water produced as an end product of the oxidation of energy-containing molecules such as carbohydrates,... Read More

Omnivore

Organisms need to eat food in order to gain energy and survive in the ecosystem. Often, living things are categorized by how... Read More

Dead Man Walking

Dead Man Walking: Wade Davis and the Secret of the Zombie Poison By Patrick D. Hahn Accepted on September 4, 2007 Twenty... Read More

Valine

Amino acids are categorized into two groups based on the capability of the human body to synthesize them; essential and... Read More

Scent glands

scent glands exocrine glands in animals which secrete scents which either repel or attract other animals, e.g. Perianal... Read More

Reservoir host

Reservoir Host Definition A reservoir host is a host that harbors the pathogen and serves as a source of the infective... Read More

Major histocompatibility complex

Definition noun A cluster of genes on a particular chromosome that specify major histocompatibility... Read More

Gallbladder

Definition noun A small, pear-shaped, muscular, hollow organ responsible for storing bile, and for creating insulin in the... Read More

Axon

What Is Axon? An axon is a thin, long fiber of a nerve cell (or neuron). It transmits electrical impulses from the cell... Read More

Keratin

Keratin is a fibrous protein naturally present in hair, skin, and nails. In hair care, it serves as a protective and... Read More

Breed

Breed 1. A race or variety of men or other animals (or of plants), perpetuating its special or distinctive characteristics... Read More

Definitive host

Different Biological Relationships The biological world is interconnected whether we notice it or not. All the life forms... Read More

Infestation

Definition noun, plural: infestations (ecology) The state of having a large number of pest organisms thriving in a... Read More