Search Results for: possess
Parenchyma
Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More
Vascular plants
Definition of Vascular plants The term 'vascular' is derived from the Latin word vāsculum, vās, meaning "a container and... Read More
Obligate aerobe
Before we define obligate aerobes, let us first understand and define aerobic organisms. Aerobic organisms are those that... Read More
Chromosomes X and Y and Sex Determination
Reviewed by: Mary Anne Clark, Ph.D. In humans, the normal chromosome complement is 46, consisting of 22 pairs of... Read More
Pioneer species
You might have come across news of some barren lands turning into luscious grasslands or forests after decades? Or you might... Read More
Selective Breeding
Reviewed by: Mary Anne Clark, PhD Thousands of years before Darwin proposed evolution by natural selection and... Read More
Why Non-Human Primates Don’t Speak Like Humans
Summary: Why are non-human primates unable to speak like humans? A widely-accepted theory associated it with their lack of... Read More
Chloroplast
Chloroplast Definition What is chloroplast? In biology, a chloroplast refers to the organelle found within the cell of... Read More
Hydrophobic
Hydrophobic Definition The fear of mixing or reacting with water under a given set of reaction parameters is often referred... Read More
Prokaryote
Prokaryote refers to any of the group of organisms primarily characterized by the lack of true nucleus and other... Read More
Chlorophyll
Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More
Green algae
Green algae (singular: green alga) are photosynthetic algae that are characterized by having chlorophylls a and b as the... Read More
Kinetic molecular theory
Kinetic molecular theory (Science: chemistry) this theory assumes that molecules must collide in order to react. The more... Read More
Living things
Living Things Definition A living things pertains to any organism or a life form that possesses or shows the... Read More
Simple squamous epithelium
Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More
Plant Water Regulation
A plant requires water as an essential ingredient of photolysis, the photochemical stage of photosynthesis where water is... Read More
Origins of Life on Earth
Although Earth was created around 4.5 billion years ago, life began to exist not long after. Due to the huge timescales... Read More
Evolution of Life – Ancient Earth
Continuing from the previous tutorial investigating the origins of life on Earth.... Life began to flourish, and the... Read More
Heterodont
Animals that possess more than one type of teeth, i.e. Humans possess both molars and incisors and are therefore... 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
Hydrophilic
Hydrophilic Definition What does a hydrophile (or hydrophilic molecule) mean? If a molecule is “water-loving”, it is... Read More
Reducing sugar
Reducing Sugar Definition What is reducing sugar? The type of sugar that acts as the reducing agent and can effectively... Read More
Lock-and-key model
Definition noun A model for enzyme-substrate interaction suggesting that the enzyme and the substrate possess specific... Read More
Alimentary canal
Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More
Mammalian Ancestors
Humans are mammals, the most successful taxonomic class of organisms to colonize the Earth. The word mammal derives from the... Read More
Phloem parenchyma
Definition noun The parenchyma cells in between the sieve tubes of the phloem, and functions primarily for food... Read More
DNA polymerase
Definition noun, plural: DNA polymerases (molecular biology) An enzyme assisting in DNA replication Supplement Polymerases... Read More
Monophyletic
Definition adjective Of, pertaining to, about, or describing that which descended from a single ancestral... Read More
DNA Structure & DNA Replication
Previous pages in this tutorial have described the basics of a cell, the energy required by these cells and how energy is... Read More
Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis
Continued from the previous tutorial that introduces protein synthesis... mRNA and tRNA mRNA leaves the nucleus and enters... Read More