In this assignment, you will write a story about how different foods travel through the digestive and excretory system from the mouth to the anus. Pretend that you are a food, such as pizza, traveling through the digestive system. Explain what happens to you (food) in the digestive tract from the time you are placed in the mouth until you exit the body. What do you see along the way? What happens to you at each part of the journey? Make your story creative and fun. The essay should be 1 to 1.5 pages, typed (using 12 pt. font), double-spaced. Your story should have the following elements:
Describe how food travels through the digestive system.
Include 3-4 different foods.
Explain what occurs at each organ of digestion.
Be written in the first-person point of view (This means you pretend that you are the food, so use I and me to refer to yourself).
Include these keywords and phrases: stomach, digestion, small intestine, large intestine, mouth, anus, and complete digestive system.

Explanation:

H

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation: