Search Results for: growth_control
Density dependent limiting factor
What Is A Density-Dependent Limiting Factor? Density-dependent limiting factors are limiting factors, which, depending on... 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
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
Homeostasis
Homeostasis is the tendency not to stray from the range of favorable or ideal internal conditions. Such conditions must be... 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
Biosecurity and Biocontrol
By: Maria Victoria Gonzaga In the previous lesson, we learned about the importance of modern science... Read More
Demographic transition
The demographic transition model is a theoretical framework that explains the historical shift in population dynamics as a... Read More
Animal Growth Hormones
Reviewed by: Mary Anne Clark, Ph.D. As mentioned in the previous tutorial, hormones are produced in... Read More
Positive feedback
Positive Feedback Definition Each mechanism of the body like temperature, blood pressure, and levels of specific nutrients... Read More
Genetic Control – On and Off Genes
Reviewed by: Mary Anne Clark, Ph.D. This lesson looks at the various factors involved that affect growth and... Read More
Control of Growth & Development
Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a day to... Read More
Rough endoplasmic reticulum
Rough Endoplasmic Reticulum Definition The rough endoplasmic reticulum (rough ER or rER) is a membrane-bound organelle... Read More
Environmental resistance
Environmental Resistance Definition Environmental resistance is such a process in which certain different elements or... Read More
The consequences of antibiotic use in horticulture
Leading articles Frederick R. Falkiner* Department of Clinical Microbiology, Trinity College, Dublin; Central Pathology... Read More
Apical bud
Apical Bud Definition The apical bud is the type of bud located at the top (apex) of the plant, particularly at the very... 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
Living things
Living Things Definition A living thing pertains to any organism or a life form that possesses or shows the characteristics... Read More
Metabolism
Metabolism Definition What is metabolism in the body? Metabolism encompasses the various biochemical processes, reactions,... Read More
Independent variable
Independent Variable Definition To define an independent variable, let us first understand what a variable is. The word... Read More
Plant Auxins – Phototropism & Geotropism
As with animals, plants also use a variety of hormones to control their growth and development. A family of hormones called... Read More
Cell division
Cell division is a biological process by which a parent cell duplicates its cell contents and divides to give rise to two or... Read More
Fibroblast
The building block of living things is known as the cell. The cell contributes to many parts and functions of different... Read More
Fastidious
Fastidious Definition We can define fastidious as a term used in microbiology to denote a species that lacks the ability to... Read More
Blood Vessels Hold Key To Thicker Hair Growth
MGH researchers have succeeded in growing hair faster and thicker in mice, thanks to a protein that promotes blood vessel... Read More
Equilibrium
Equilibrium Definition In Biology Equilibrium refers to the state of balance and stability. In biology, equilibrium is... Read More
Genetic Information and Protein Synthesis
Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More
Proteoglycan
What are proteoglycans? Proteoglycans are primarily a type of polysaccharide. Structurally, proteoglycans are... Read More
Characteristic
Characteristics Definition We can define characteristics as qualities or features that describe the distinctive nature or... Read More
Centrosome
Centrosome Definition What is a centrosome? The centrosome is considered to be the main microtubule-organizing... Read More
Circulation
Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More
Catabolism
Catabolism Definition Catabolism is the branch of the metabolic process that breaks down complex, big molecules into... Read More