Biology and Nature
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Listening to Fish Ears
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Ask most biologists and you’ll hear that salmon, trout, and many fish species make one round trip between fresh water and the ocean over their lifetime. But by looking in, of all places, their ear bones, scientists have learned that the European brown trout doesn’t stick to such a simple itinerary: The fish seem to [...]
After the genome of Drosophila, that of a wasp parasitoid
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A large research consortium has sequenced the genomes of three species of parasitoid wasp genus Nasonia, often considered the “laboratory rat” of the Hymenoptera order including ants, bees and wasps. The tiny wasps and their relatives parasitoids lay their eggs in the bodies of many other insects, including important agricultural pests or disease vectors so [...]
Venus flytraps eating plants
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Introduction / Purpose: I wanted to do this project because I wanted to learn about how Venus flytraps catch their food
Hypothesis / Questions: My question is, “How do Venus flytraps catch their food?” My hypothesis was, “I thought the Venus flytraps grabbed their food and swallowed it.”
Materials: Venus-flytrap, bug
Procedure: First I [...]
Biologists awaken dormant viruses in the heart of our cell
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Viruses sometimes alumni hundreds of millions of years have colonized our DNA. A team of EPFL (Ecole Polytechnique Federale de Lausanne) have discovered how our bodies neutralizes these squatters. A breakthrough in understanding the evolution of species, which could also pave the way for new therapies against AIDS.
About half of our DNA does not [...]
ANTS
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Introduction / Purpose: I wanted to see what ants like to eat.
Hypothesis / Question: I thought that the ants would like honey because it’s pure sugar.
Materials: 1 candy bar, a little bit of salt, and some honey.
Procedure: Put the honey on a paper plate with a little candy bar and salt. [...]
The human immunodeficiency virus (HIV): from its discovery to its eradication
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This case is before us by Pierre-Alain Rubbo. It shows the human immunodeficiency virus (HIV): from its discovery to its eradication.
Introduction:
HIV belongs to the family of retroviruses and is the cause of acquired immunodeficiency syndrome (AIDS). This state is characterized in humans by a deficient immune system, making it vulnerable to certain pathogens [...]
Glaciers are melting in Alaska, but less quickly than expected
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Introduction / Purpose: I am a swimmer and my friend who swims with me has blond hair. Since she did not wash her hair in a long time it turned green and I wanted to know how and why.
Hypothesis / Questions: Will too much chlorine in the pool turn a blond person’s hair green and [...]
The acidity of the urine modulates bladder function
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The epithelial cells of bladder or urothelial cells may release neurotransmitters and mediators such as adenosine triphosphate (ATP) in response to chemical or mechanical stimuli. Thus, distension of urothelial cells during bladder filling stimulates cells and induces release of ATP that signals the need to urinate.
Biologists at the University of Sydney have shown that [...]
Cricket Chirps in the Dark While Music is Being Played
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INTRODUCTION:
I did this project to see if different types of music affects the amount of cricket chirps in a six minute time period
The biomedical industry should concentrate more on research
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Investments in production are down in the field and pharmaceutical industries are turning to relationships with research or public institutions (hospitals, clinics …). A growing number of clinical trials should emerge in 2010.
Soo Kee Chee, director of the National Cancer Center Singapore (NCCS) said that academic institutions are beginning to conduct clinical trials for [...]
