Bio Camp study giude
1. Exchange with the environment occurs as dissolved substances diffuse across the plasma membranes between the cells and their aqueous surroundings. For animals with complex internal organization and relatively small surface to area volume ratio, internal surfaces are specialized for exchange with the environment. Folding or branching gives these moist internal membranes expansive surface area. Materials are shuttled between all these exchange surfaces by the circulatory system. 2. Interstitial fluid fills the space between the cells of the internal environment of vertebrates. This fluid exchanges nutrients and wastes with the blood contained in microscopic vessels called capillaries. 3. Homeostasis – The steady-state physiological condition of the body. 4. Negative feedback is a mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers a response that counteracts the initial fluctuation. It prevents small changes from becoming too large. An example is a thermo . . .
Bulk-feeders eat relatively large pieces of food by either killing their prey or tearing off pieces of meat or vegetation by using tentacles, claws, fangs, jaws, or teeth. Suspension feeders are mostly aquatic animals that sift small food particles from the water. Oligosaccharides are relatively short chains of monosaccharides, which typically are intermediates in the breakdown of polysaccharides to monosaccharides. Fluid-feeders make their living by sucking nutrient-rich fluids from a living host. Since food vacuoles fuse with lysosomes, which contain hydrolytic enzymes, digestion occurs safely within a compartment that is enclosed by a membrane. They must be reduced to single amino acids before they can be absorbed. The enzymes that hydrolyze peptide bonds and reduce proteins or peptides to amino acids are called proteases or peptidases. Major phyla, such as Cnidaria and Platyhelminthes, use a gastro vascular cavity for digestion. Triglycerides, which cannot be efficiently absorbed, are enzymatically digested by pancreatic lipase into a 2-monoglyceride and two free fatty acids, all of which can be absorbed. The small intestine absorbs most of the digestive materials, while the large intestine absorbs the remainder of the materials and reabsorbs most of the water. -Proteins are polymers of amino acids linked together by peptide bonds. Disaccharides are simply two monosaccharides linked together by a glycosidic bond.
Common topics in this essay:
Study Guide, Cnidaria Platyhelminthes, gastric juice, , amino acids, efficiently absorbed, secreted epithelial cells, acids absorbed, salivary amylase, food vacuoles, secreted epithelial, hydrolytic enzymes, enzyme pepsin, intestine absorbs, |
Acceptance Essays
