“SOME LIKE IT HOT”

By Group 1 Nicki Werner, Liz Lewis, Molly Sant, Jazmyn Ferguson

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

SOME LIKE IT HOT

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

SOME LIKE IT HOT

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.

SOME LIKE IT HOT

GROUP 2 SOME LIKE IT HOT

Maggie, Carly, Emma, and Bergen

Example of a poikilotherm

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

VOCABULARY TERMS

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

KEY CONCEPTS

Kera Bussey-SimsGussie FredericiAnkita Kanakadandila

SOME LIKE IT HOT

KEY CONCEPTS 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

VOCABULARY TERMS 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

PICTURES

Figure 1.Rattelsnake-Poikilotherms

Figure 2.Caterpillar-Poikilotherms

Figure 3. Flamingo- homeotherms

HUMANS AND MANY OTHER HOMEOTHERMSAnjali Desai Caroline Murphy Elena Murawski

KEY 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.

VOCABULARY WORDS Homestasis- the maintenance of stability in a

n organisms internal environment regardless of external changes.

Metabolic - the physical and chemical process in the body