1. “S OME L IKE IT H OT ” By Group 1 Nicki Werner, Liz Lewis, Molly Sant, Jazmyn Ferguson

2. Best Internal Temperature for most organism is 20 to 40 degrees Celsius Optimum- “the value or set of conditions, which results in the most favorable outcome” Normal human body temp. is 37 degrees Celsius S OME L IKE IT H OT

3. Most organisms can not survive in hot weather- hot temperatures change the shape of proteins Proteins- molecules required for the survival, growth, and repair of all cells When a protein loses it’s normal shape it can’t function. Ex. When an egg is heated, the clear molecules on the outside (albumin) change shape S OME L IKE IT H OT

4. Usually cold temperatures do not destroy proteins- they slow the rate of chemical reactions The rate of reactions determines the rate of energy use (metabolism) Metabolism- The process by which organisms use energy Slower metabolism reduces need for food (helps in hibernation) 0°C or lower; ice crystals form and cause irreparable damage on the cells. S OME L IKE IT H OT

5. G ROUP 2 S OME LIKE IT HOT Maggie, Carly, Emma, and Bergen Example of a poikilotherm

6. Cellular respiration – a chemical process that takes place in the cells of all organisms; where glucose and food molecules are broken down by chemical reactions that release energy; one of the main ways animals get energy Poikilotherms – “cold-blooded” animals that include reptiles and fish Homotherms – “warm-blooded” animals that include birds and mammals; can maintain a constant body temperature V OCABULARY T ERMS

7. Most organisms can tolerate only a narrow range of temperatures Because of this they either need to live in moderate climates or adapt - An example of adaptation is cellular respiration Poikilotherms have more trouble surviving in extreme climates because they rely on the environment to keep a constant temperature K EY C ONCEPTS

8. Kera Bussey-Sims Gussie Frederici Ankita Kanakadandila S OME L IKE I T HOT

9. K EY C ONCEPTS Poikilotherms Are animals that have bodies with temperatures that rise when it is warm and fall when it is cold When it is to cold, they burry themselves in the soil When it is hot, they lay in the shade When it is cold, metabolism slows and they are less active Homeotherm Maintain a constant body temperature Which is usually higher then the surrounding temperature Homeotherm can live and work in temps below freezing Heat always flows from warmer to cooler objects

10. V OCABULARY T ERMS Poililotherms Any animal species whose internal body temperature changes based on the temperature of if its surrounding Reptiles Insects Homeotherms Any animal species that maintains a relatively constant body temperature, regardless of its surroundings Mammals Birds

11. P ICTURES Figure 1. Rattelsnake- Poikilotherms Figure 2. Caterpillar- Poikilotherms Figure 3. Flamingo- homeotherms

12. H UMANS AND MANY OTHER HOMEOTHERMS Anjali Desai Caroline Murphy Elena Murawski

13. K EY CONCEPTS The human body regulates body temperature by making changes People might get red or flushed if they get hot because the brain signals the blood to travel to the vessels near the skin When the body is cold, it can shiver. This causes movement and will get the blood flowing in the body Also when the body is cold, hair or feathers will stick up from the body to trap air.

14. V OCABULARY W ORDS Homestasis- the maintenance of stability in a n organisms internal environment regardless of external changes. Metabolic - the physical and chemical process in the body