su ion of nutrients in the ileum. ease caused by a lack of vitamin C causing bleeding gums and in. ocess by which large, insoluble molecules are broken down all, soluble molecules.
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- When William H. was helping victims after a devastating earthquake in a region not prepared to swiftly set up adequate temporary shelter, he developed severe diarrhea. He was diagnosed as having cholera, a disease transmitted through unsanitary water supplies contaminated by fecal material from infected indiv iduals. The toxin produced by cholera bacteria causes Cl- channels in the lurninal membranes of the intestinal cells to stay open, thereby increasing the secretion of Cl- from the cells into the intestinal tract lumen. By what mechanisms would Na+ and water be secreted into the lumen in conjunction with Cl- secretion? How does this secretory response account for the severe diarrhea that is characteristic of cholera?Figure 16.7 Which of the following statements about the digestive system is false? a. Chyme is a mixture of food and digestive juices that is produced in the stomach. b. Food enters the large intestine before the small intestine. c. In the small intestine, chyme mixes with bile, which emulsifies fats. d. The stomach is separated from the small intestine by the pyloric sphincter.The stomach has two types of exocrine secretory cells: chief cells that secrete an inactive form of a protein-digesting enzyme, pepsinogen parietal cells that secrete hydrochloric acid (HCl), which activates pepsinogen Both these cell types have an abundance of mitochondria for ATP production - the chief cells for the energy needed needed to synthesize pepsinogen, the parietal cells for the energy needed to transport H+ and Cl- from the blood into the stomach lumen. But only one of these cell types also has an extensive rough endoplasmic reticulum and abundant Golgi stacks. Explain which cell type would have extensive rough ER and Golgi stacks and why. Also explain which cell type would not have as extensive a rough ER and Golgi stacks and why.
- original seclection Cranberry is a fruit that contains the macromolecule carbohydrate, the polymer sucrose, made of the monomers glucose and fructose. It contains many minerals, including calcium. Calcium is important to humans for building bones, allowing blood to clot, muscles to contract, and heart function. Humans cannot produce calcium, therefore it is necessary for us to digest it. provide at least one alternative food item that provides one or more of the same macromolecules and/or minerals. Is your alternative healthier than the original selection? Are there any associated physiological disorders if one or more of the minerals provided were lacking from an individual’s diet?Events that occur in the peroxisomes incluce the following EXCEPT oxidation of fatty acids oxidation of water to H2O2 degradation of H2O2 to water and oxygen synthesis of plasmalogensIn the stomach:a. muscles churn and mix the food with acids and enzymesb. glands make 3 quarts of digestive juices each dayc. food leaves as a thick liquid called chymed. all of the above
- Draw a plan diagram of the frog intestine viewed under the microscope (see attached images for help!!).... YOU NEED TO DO A DRAWING AND DO CALCULATIONS. DO NOT ANSWER THIS WITH A WRITTEN RESPOSE!!!! A plan diagram is a simple drawing showing only the boundaries between the lumen, the columnar epithelium, the (areolar) connective tissue, the circular smooth muscle and the longitudinal smooth muscle. A plan diagram serves to illustrate the location and relative thickness of the various tissue layers. 1. Draw a plan diagram and label the following: • Longitudinal smooth muscle • Columnar epithelial tissue • Circular smooth muscle • Villi • Areolar connective tissue • Lumen 2. Calculate actual size and drawing magnification of the width of the intestine. Include formulae used and calculations. 3. Add a scale bar with actual size next to your diagram. Give your drawing a descriptive title and record total magnification. Attached are an example plan diagram labelled, as well as a…How can a horse sustain eating plant materials even if its stomach is not capable of dugesting fibrous materials like a compound stomached animal such as cattleEarly in the digestive process, a digestive enzyme found in saliva called ptyalin breaks down large starch molecules. It’s unable to break down proteins.
- Does the type of diet of the insect affect the structure of organs/parts of the digestive system? Cite at least four structures and explain such adaptation. Make sure that each division of the digestive system should be represented. Elaborate in your own words.In which of the following part of thecell does the pyruvic acid is broken down into carbon dioxide, water and energy?A. Cytoplasm B. NucleusC. Mitochondria D. ChloroplastThese move food through the digestive system:a. digestive fluidsb. enzymesc. mucous membranesd. smooth muscles