Exploring the sense of smell of the American black bear
By: Rex Trulove
The American black bear, Ursus americanus, is an interesting creature. The smallest of the three bear species found in North America, a fully grown adult can be in excess of 300 pounds. They are among the largest and most successful predators on the continent and...
Reproduction of bacterial cells
By: Alicia M Prater PhD
Bacteria are prokaryotes. They have a circular genome, usually present as a single DNA plasmid. Bacteria are not specifically sexual or asexual organisms. Binary fission, a form of asexual reproduction, occurs among many bacteria, but some also reproduce sexually via conjugation. Research is still delving...
Physical characteristics of bacteria
By: Alicia M Prater PhD
Bacteria are microscopic prokaryotes – small single-celled organisms that lack a nucleus. Various types of bacteria exist - they can be spherical, rod-shaped or spiral-shaped, require oxygen or die in the presence of oxygen, and some even require another living cell for replication. But there...
The different kinds of bacteria
By: Alicia M Prater PhD
Bacteria are classified in a number of different ways. The traditional and most commonly used classification system is Gram stain, but bacteria are also classified based on shape and other physical characteristics, such as growth requirements. A basic method of differentiating bacteria are as benign...
Plant profiles: Queen Anne's Lace
By: Tammy Cramblett
Daucus Carota, better known as Queen Anne's Lace, is a common plant. Queen Anne's Lace can be found growing wild in fields, on the side of a road and in gardens. Depending on who you ask, this plant is annoying yet pretty to look at...
Overview of the ungulate order
By: Rex Trulove
If you ask a person what elephants, pigs, elk, deer, hippos, giraffes, tapirs, horses, zebras, manatees, goats, sheep, antelope and camels all have in common, there is a pretty good chance that the person would only be able to say that they are all animals...
The most common pathogenic bacteria
By: Alicia M Prater PhD
The most common pathogenic bacteria can vary by community or population, or if considering a particular type of infection. The most common strains also vary by time period based on new or effective treatments and preventative measures. In today’s world, antibiotic resistant bacteria are...
30,000-year-old-virus revived
By: Leigh Goessl
Researchers in France have announced an ancient virus has been revived after thousands of years of lying dormant. The virus had been discovered frozen under deep layers of Siberian permafrost. When thawed, experts found it was not only an active virus, but also infectious.Frozen...
How scientists classify organisms
By: Sharon Agun
From the time of the first humans, classification of organisms has been a useful, even necessary tool. Primitive classification schemes sorted things into simple, utilitarian categories: edible and inedible, dinner for you and you are dinner for it, dangerous and safe.Modern western science continues...
New rodent-like marsupial discovered in Australia
By: Amanda M. Gross
The discovery of a new animal species is an exciting event in the scientific community, although it does not often catch the public's attention like the three marsupial species recently found in Queensland, Australia. These species have gained this attention, not because they are more...

 

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