1 Transformation: bacteria simply absorb, across their cell membrane and cell wall, DNA that is floating around in the environment. 2  Conjugation: bacteria directly transfer DNA from one bacterium to another through structures called pilli. Transformation: bacteria simply absorb, across their cell membrane and cell wall, DNA that is floating around in the environment. 2  Conjugation: bacteria directly transfer DNA from one bacterium to another through structures called pilli.
Food begins its journey through the digestive system in the mouth, before being pushed by a series of involuntary muscle contractions through the esophagus, then the stomach, and then the small and large intestines.
The liver is where the blood, that is carrying the nutrients, vitamins, and minerals from the small intestine, enters. The liver is a food processor, it stores changes and releases the nutrients to the blood. The teeth and tongue are also accessory organs of the digestive system. They help break down food. The accessory organs of digestion include the <b>salivary glands</b>, <b>pancreas</b>, <b>liver</b>, <b>gallbladder. salivary glands, teeth, and tongue.</b> <br /> The pancreas makes digestive juices called enzymes which help to digest food further.