Search Results for: target
Target response
target response --> operant In conditioning, any behaviour or specific response chosen by the experimenter; its frequency... Read More
Target cell
target cell An erythrocyte in target cell anaemia, with a dark centre surrounded by a light band that again is encircled by... Read More
Target organ
target organ A tissue or organ upon which a hormone exerts its action; generally, a tissue or organ with appropriate... Read More
Axon terminal
An axon terminal is any of the button-like endings of axons through which axons make synaptic contacts with other nerve... Read More
Autocrine signaling
Autocrine Signaling Definition What is autocrine signaling? Autocrine signaling is a type of cell signaling wherein a cell... Read More
Phagocytosis
Phagocytosis Definition Phagocytosis is a basic physiological cellular process wherein a cell ingests a solid particle... Read More
Golgi apparatus
Golgi Apparatus Definition The Golgi apparatus is a membrane-bound organelle in eukaryotic cells. It plays a crucial role... Read More
Hormone Production
Reviewed by: Mary Anne Clark, Ph.D. Hormones are chemical messengers produced by glands in the endocrine system.... Read More
Principles of Hormonal Control Systems
Hormones are chemical messengers that enter the blood directly upon their secretion from endocrine glands. A single gland or... Read More
Endoplasmic reticulum
Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... Read More
Homeostasis
Homeostasis is the tendency not to stray from the range of favorable or ideal internal conditions. Such conditions must be... Read More
Endocytosis
Endocytosis Definition What is endocytosis in biology? Endocytosis is a cellular process by which a cell internalizes any... Read More
Cell signaling
Definition noun The process of communication occurring between the cells and within the cell Supplement Cell signaling is... Read More
Gonadotropin
Definition noun, plural: gonadotropins A polypeptide hormone secreted by the anterior pituitary and the placenta, and acts... Read More
Cytotoxic T cell
Definition noun, plural: cytotoxic T cells A T cell responsible for inducing death to target cells (e.g. infected somatic... Read More
An introduction to Homeostasis
Researched and Written by Jonjo Minns Submitted to biologyonline.com on February 25, 2009. Published in biologyonline.com... Read More
Mexican hat cell
Mexican hat cell --> target cell An erythrocyte in target cell anaemia, with a dark centre surrounded by a light band... Read More
Expression vector
Definition noun, plural: expression vectors A plasmid containing the required regulatory sequences specifically used for the... Read More
Homeostatic Mechanisms and Cellular Communication
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory... Read More
The Human Nervous System
The nervous system is essentially a biological information highway, and is responsible for controlling all the biological... Read More
Steroid hormone
Definition noun, plural: steroid hormones A type of steroid that acts as a hormone, and that which is exemplified by sex... Read More
Axon hillock
Axon Hillock Definition What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More
Testosterone
Definition noun, plural: testosterones A steroid hormone with a chemical formula of C19H28O2, and is regarded as the primary... Read More
Glycocalyx
What is the Glycocalyx? The glycocalyx is a polysaccharide-based gel-like, highly hydrous cellular thin layer, covering... Read More
Humoral immunity
Let’s get to know where one should place humoral immunity, the topic of today’s discussion!! By the end of the article,... 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
CRISPR DIY – biohacking genes at home
Have you ever thought of changing yourself for the better -- genetically-speaking? Lately, CRISPR company has been selling a... 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
Oligonucleotide
Definition noun plural: mononucleotides ol·i·go·nu·cle·o·tide, ŏl′ĭ-gō-no͞o′klē-ə-tīd A short polymer... Read More
Second messenger
second messenger (Science: molecular biology) In many hormone sensitive systems the systemic hormone does not enter the... Read More
Hallucination – Are we the only ones “seeing” things or animals hallucinate, too?
Hallucination is defined as perceiving something that seems real but in fact, it is not. Some references take it as a... Read More
Argipressin
Definition noun, plural: argipressins A vasopressin that has an amino acid sequence:... Read More