The alimentary canal includes mouth, esophagus, stomach, small intestine, and large intestine. As food passes through the alimentary canal, it is exposed to the different chemical secretions from the organs of the alimentary canal, as well as from other organs, such as liver and pancreas.
First, in the mouth, salivary glands produce saliva which contains enzymes involved in the food digestions. After the food is passed to the esophagus, it produces mucus to help passage of the food. In the stomach, acid and pepsinogen, as well as mucus are produced. All of these secretions help food digestion. Small intestine also produces some digestive enzymes. Further, bile from liver and enzymes from pancreas are secreted via ducts into small intestine. Finally, large intestine secretes mucus for lubrication.
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Answer:
A gene is a section of a chromosome that codes for trait.The specific combination of alleles an organism has is called its genotype which affects the organisms features.
Explanation:
1000 times
If the surface area of a cell that is shaped like a cube increases 100 times, its volume increases about 1000 times.
Answer:
A The cells genetic material is copied
Explanation:
Cell division is the process by which a single cell divides into two daughter cells. Each daughter cell needs to inherit an entire copy of the genetic material, therefore, before cell division occurs, the DNA is replicated. This allows the cell to divide the genetic material between two daughter cells, such that each cell inherits the complete genome.
