71 results found

Search Results for: uptake

Endocytosis

Endocytosis Definition What is endocytosis in biology? Endocytosis is a cellular process by which a cell internalizes any... Read More

Endoplasmic reticulum

Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... Read More

Pinocytosis

Pinocytosis Definition What is pinocytosis?  Pinocytosis is the ingestion of extracellular fluids, i.e. the fluid... Read More

BIOACCUMULATION

Bioaccumulation - a general term for the accumulation of substances, such as pesticides (ddt is an example), methylmercury,... Read More

Glucose

Glucose occurs naturally and is ubiquitous. It is one of the three most common monosaccharides; the other two are fructose... Read More

Phosphate

Phosphate is an essential inorganic compound composed of a phosphorus atom bonded to four oxygen atoms. This molecular... Read More

Group translocation

Group Translocation Definition Just like your “home” is a private place where you and your comfort are maintained due... Read More

Glycogen

Definition noun plural: glycogens gly·co·gen, glī′kə-jən A multi-branched polymer of glucose, mainly produced in... Read More

Hot spleen

Hot spleen (Science: radiology) Decreased liver uptake, liver disease (e.g., cirrhosis), shunting of portal venous blood,... Read More

Insulin

Definition noun A polypeptide hormone secreted by the beta cells of the islets of Langerhans of the pancreas to regulate the... Read More

Animal Growth Hormones

Reviewed by: Mary Anne Clark, Ph.D. As mentioned in the previous tutorial, hormones are produced in... Read More

Hypertonic

Hypertonic Definition Hypertonic is a term used to describe an entity being in the state of hypertonicity, where there is a... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define the epidermis as one or more layers of cells forming the tough... Read More

Assimilation

Assimilation Definition What is assimilation? Assimilation in biology is defined as the process in which living organisms... Read More

Phagotrophy

Definition noun A process of ingesting relatively large particles of food that carries out via intracellular... Read More

Opsonin

Definition noun, plural: opsonins Any substance (e.g. antibody) that binds to the surface of a particle (e.g. antigen) to... 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

Net photosynthesis

Definition noun (1) The difference between the total amount of photosynthesis and the sum of the rates of respiration (i.e.... Read More

Perisinusoidal space

Definition noun The plasma-filled extravascular space in the liver, between a hepatocyte and a liver sinusoid Supplement The... Read More

Turgor pressure

In biology, turgor pressure pertains to the pressure that is exerted by the fluid (e.g. water) against the cell wall. It is... Read More

Adenosine monophosphate

Definition noun plural: adenosine monophosphates (biochemistry) A nucleotide composed of adenine, ribose and a phosphate... Read More

Cell theory

What Is Cell Theory? Biological cell theory explains the idea of organismal constitution, structure, and function. It... Read More

Capillary action

Definition noun The movement of a liquid, e.g. water molecules, through a narrow space as a result of cohesion, adhesion,... Read More

Cisterna

Definition noun plural: cisternae cis·ter·na, sɪˈstɜːnə (cell biology) The flattened membrane disk containing... Read More

Bacteroides caccae

Definition Noun A gram-negative non spore-forming anaerobic and rod-shaped bacterium involved in inflammatory bowel diseases... Read More

Monocyte

Monocytes Definition Monocytes are a subset of white blood cells (WBCs) or leukocytes that originate in the bone marrow.... Read More

Brown algae

Brown Algae Definition Brown algae are algal species characterized by being multicellular and having a brown or... Read More

Nitrifying bacterium

Definition noun, plural: nitrifying bacteria A bacterium that is capable of converting ammonium into... Read More

Erythrocyte

Erythrocyte Definition Erythrocytes (red blood cells or RBCs) are the myeloid series of specialized cells that play an... Read More

Transpiration Stream

Pertaining to the flow of water across a plant, beginning with the uptake of water via the roots to the point where the... Read More

Lipogenesis

Lipogenesis Definition Lipogenesis is the process of producing lipid or fat to store biochemical energy for later metabolic... Read More

Animal Water Regulation

Homeostatic control, a set environment, and how evolution and natural selection drives a species to adapt to its environment... Read More

Water in Plants

The movement of molecules, specifically water and any solutes, is vital to understand in light of plant processes. This will... Read More

Protein Activity and Cellular Metabolism

Protein Binding Sites The ability of various molecules and ions to bind to specific sites on the protein surface forms the... 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

Still Water Community Plants

Freshwater Plants & Water As mentioned in the previous tutorial about still water plants, the method of transpiration... Read More

Hormone Production

Reviewed by: Mary Anne Clark, Ph.D. Hormones are chemical messengers produced by glands in the endocrine system.... Read More

Effect of Chemicals on Growth & Development in Organisms

Plants Plants require a large number of elements to function properly, mainly carbon, oxygen, and hydrogen, essentially... 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

Genetic Engineering Advantages & Disadvantages

  Through genetic engineering, scientists are able to move desirable genes from one plant or animal to another or... Read More