Regina's Biology Blog March 2007 Archive

Science fair projects give you the opportunity to experience science and biology through hands-on activities. Some students however, find it difficult to get started on a project. So where do ... Read More

Arteries are elastic vessels that transport blood away from the heart. The largest artery of the body is the aorta. It originates from the heart and branches out into smaller ... Read More

Researchers speculate that animal to human organ transplants may be possible in the future. The reason behind this new hope is the development of genetically modified pigs. Transplants between two different ... Read More

Onion cell in metaphase. © The Entangled Bank Mitosis, a form of cell division, enables organisms to grow and reproduce. Dividing cells go through an ordered series ... Read More

Researchers from MIT have developed a molecular model for how red blood cells change shape. Red blood cells are disc shaped cells that are responsible for delivering oxygen to, and retrieving ... Read More

Can you identify the following cell structure? Nucleus Golgi Complex Ribosome Cell Wall © Dennis Kunkel Need a hint? This cellular organelle is composed of flat sacs that are ... Read More

Have you ever wondered where all of those digested food molecules are absorbed in your body? Well, before those carbohydrates, proteins, and fats can be absorbed, they must be broken ... Read More

Veins are elastic vessels that transport blood to the heart. The smallest veins in the body are called venules. They receive blood from the arteries via the arterioles and capillaries. The ... Read More

© Johanna Höög, EMBL Researchers from the European Molecular Biology Laboratory (EMBL) have announced that they have produced the first 3D, high resolution image of a yeast cell. These ... Read More

© Steve Berg A dihybrid cross is a genetic cross between P generation (parental generation) organisms that differ in two traits. This cross can be performed between two individuals ... Read More

The stomach is famous for its secretion of acid, but acid is only one of four major secretory products of the stomach. Mucus, acid, hormones, and proteases are all important gastric ... Read More

How is gender determined in organisms that do not have sex chromosomes? In species like most kinds of wasps, bees, and ants, fertilization determines gender. Parthenogenesis is the development of an ... Read More

Onion cell in prophase. © The Entangled Bank Mitosis, a process of cell division, enables organisms to grow and reproduce. Dividing cells go through an ordered series ... Read More

Temperate forests are areas with high levels of precipitation and humidity. These forests also contain a variety of deciduous trees. Deciduous trees lose their leaves in winter. Due to abundant ... Read More

Plants are amazing organisms. They are able to create their own food through photosynthesis, and provide food for millions of other organisms. Plants may seem dull to some, but here ... Read More