PNW #2 Exam Practice - Claim, Evidence, Reasoning

PNW #2 Exam Practice | Claim, Evidence, Reasoning Response Name Hr Below is evidence collected by marine biologists. Use the following to support your claim. Figure 1 | Weddell Seal’s Heart Rate During a Dive Figu...

PNW #2 Exam Practice | Claim, Evidence, Reasoning Response Name Hr Below is evidence collected by marine biologists. Use the following to support your claim. Figure 1 | Weddell Seal’s Heart Rate During a Dive Figure 2 | Physiological adaptations in marine mammals Figure 3 | Comparison of Oxygen stores in three types of mammals Figure 4 | Comparison of dive statistics for air-breathing mammals KEY Question: Why can marine mammals stay underwater for extended periods of time? CLAIM | Write a statement that responds to the question. (____/1 pt) Marine mammals can stay underwater for extended periods of time because of their dive response. EVIDENCE | Provide THREE pieces of scientific data to REASONING: Use scientific principles and knowledge that support your claim. Your evidence should be appropriate you have about the topic to explain why each piece of evidence (relevant) and sufficient (enough to convince someone that your (data) supports your claim. In other words, explain how your data claim is correct). SIMPLY RESTATE EVIDENCE YOU PULL FROM proves your point? (____/3 pt) THE FIGURES! (____/3 pt) 1. Figure 1 shows that when the seal is at 4 Marine mammals have a dive response, and this minutes, when at rest it has a 68bpm heart allows their body to adapt when diving allowing them rate but at 16m depth the heartrate is 35bpm. to stay underwater longer. (or any similar comparison) 1. When diving the heart rate of the mammal 2. Figure 2 shows when a mammal dives… slows down which in turn causes the blood a. Blood volume increases 2-3x flow to slow down, this allows the animal to b. Hemoglobin concentration increases preserve oxygen (this uses evidence #1 for 2x proof) c. Myoglobin concentration increases 2. Marine mammals increase both their (>10x) hemoglobin and myoglobin concentrations d. Vascular control increases (meaning when diving. This allows them to carry more movement of blood) (would not need to list all of them, just pick 1) oxygen without continuing to breath (uses evidence #2 for proof) 3. All mammals that dive have a higher 3. Figure 3 shows that humans hold more concentration of oxygen in their blood or oxygen in their blood (58%) when compared muscles which allow the utlization of oxygen to their lungs (25% stored). while the animal holds its breath. (uses (or any similar comparison) evidence #3 for proof) 4. Figure 4 shows that northern elephant seals 4. The more hemoglobin and myoglobin an have high amounts of both hemoglobin (25 animal has the more equipped they are to g/dl) and myoglobin (6.5 g/100g) and they also dive to deeper lengths. (uses evidence #4 for have the largest maximum diving depth 1,581 proof) meters. (or any similar data) *would only need 3 statements total for 3 points, *would only need 3 statements total for 3 points, however make sure to use a different figure each however make sure to integrate each piece of time! evidence!