Articles Index

Overview of the Digestive System

This overview of the digestive system provides information on the secretion, absorption and motility of the digestive system.

The Lungs

The lungs are the organs responsible for breathing, the alternate inhalation and exhalation of air. The heart and lungs work together to provide oxygen to the cells of the body.

Spinal Cord Regeneration

Scientists are moving closer to spinal cord regeneration with a unique breakthrough.

Salmonella as a Cancer Fighter

Researchers have genetically altered Salmonella to be used to fight cancer.

Anatomy of the Stomach

Learn about the anatomy of the stomach and the types of cells that cover the stomach.

Salivary Glands and Saliva

Find information on salivary glands, saliva, mucus and their function in digestion.

Fat Cells To Nerve Cells

Researchers have transformed adult fat stem cells into nerve cells.

Cavity Fighting Bacteria

Researchers have genetically altered bacteria, turning them into cavity fighting bacteria.

Cloning Clinic

Dr. G. Richard Seed set off a firestorm by announcing his intention to open a human cloning clinic.

Neurons

All cells of the nervous system are comprised of neurons. Neurons are responsible for sending, receiving, and interpreting information from all parts of the body.

Dolly Is A Clone

Scientists have cloned an adult mammal to produce a sheep named Dolly.

The Cancer Stopper

Could we one day find a cure for cancer? Researchers are seeking to stop cancer in its tracks.

Central Nervous System

The nervous system is comprised of the central nervous system and the peripheral nervous system. The central nervous system is responsible for processing information received from the peripheral nervous system.

Bacteria In Turkeys

Turkeys have been found to be contaminated with bacteria. Testing is not being done for microbes such as Campylobacter bacteria.

Mitosis Animation

This mitosis animation illustrates the different phases of mitosis in a plant cell.

Plant Tissue Systems

Plant tissue systems are composed of dermal tissue, vascular tissue, and ground tissue systems. These systems provide support, nutrient formation and transportation, growth, and protection for a plant.

Golgi Complex

The Golgi complex, also called the Golgi apparatus, is a membranous structure found in plant and animal cells. It processes, sorts, and generates molecules necessary for proper cell function.

Animal Viruses

Animal viruses cause a wide range of diseases in humans and animals. Some cause persistent infections, while others can transform normal cells into tumor cells.

Cancer Viruses

Cancer viruses have the ability to genetically alter cells, causing them to experience abnormal new growth.

Plant Viruses

Viruses are capable of infecting various types of organisms including animals, bacteria, and even plants. Plants viruses cause plant diseases that negatively affect viable crop production.

Carbohydrates

Carbohydrates are one of the four major classes of organic compounds in living cells. The term carbohydrate is used when referring to a saccharide or sugar and its derivatives.

Lipids

Lipids are very diverse in both their respective structures and functions. Examples of lipids include fats, phospholipids, steroids and waxes.

Phospholipids

Phospholipids belong to the lipid family of biological polymers. A phospholipid is composed of two fatty acids, a glycerol unit, a phosphate group and a polar molecule.

Types of Plant Cells

There have a number of important specialized types of plant cells. Some examples of specialized plant cells include parenchyma cells, collenchyma cells and sclerenchyma cells.

Endoplasmic Reticulum

The endoplasmic reticulum is a network of tubules and flattened sacs that serve a variety of functions in the cell.