- 1) Why do the two DNA strands need to be going in the opposite directions? (2-3 sentences) Hint: think about base pairing.
- VI) Why would a wolf make a better fossil than a worm? A) large organisms fossilize better than small ones B) soft tissues make good fossils C) hard parts like bones and teeth are less likely to be broken down quickly D) fur fossilizes well
- There are 3 parts to the Cell Theory.Please list 2of them. Your answer
- Joey eats his favorite burger before his soccer championship. All living things contain cells. All living things reproduct. All living things need energy. All living things grow.
- 1. The trachea and the esophagus are located side by side. What mechanisms prevent food from entering the trachea and the lungs when swallowing? 2. Explain the mechanism that moves food through the gastrointestinal tract. 3. What is the role of the stomach in digestion? Describe how the structure of the stomach relates to its function. 4. Strong acids can dissolve or chemically burn living matter. Why is the stomach tissue not damaged by stomach acid? Describe the mechanism by which the stomach lining is protected from the very acidic gastric juice.A 5. Pepsinogen is sometimes referred to as a pre-enzyme because it is the inactive form of the enzyme pepsin. Why is it necessary to have a pre-enzyme?A. A 6. A cheaper but tougher cut of steak can be made more enjoyable by the process of "tenderizing." Use the Internet and other sources to find methods of tenderizing meat. (a) Explain the process of meat tenderizing. (b) What are the natural sources of chemical tenderizers? (c) How is the process of meat tenderizing similar to digestion?
