Section 4-3: homeostasis Essential Question: What changes in the body could affect heart rate, respiratory rate, and CO2 output to meet the demands of cellular respiration? Section 4-3: homeostasis Learning Target Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis. .

announcements Biology Tutoring this week: Lunch B (Tuesday & Thursday) 7:00AM (Monday – Friday) After school Biology Tutoring: Tuesday You must sign up for retakes during Biology Tutoring. 7:00AM retakes only. Last day to retake Section 3 is 11/01/16.

Color Printer Paper = 10 Points announcements Available Extra Credit: Tissue Box = 2 Points Plastic Pencil Box = 5 Points Color Printer Paper = 10 Points

Organisms need the process of ___ ____ to make energy from their food. overview Cellular respiration Organisms need the process of ___ ____ to make energy from their food.

overview ? + 6O2  6CO2 + 6H2O + Energy

GLUCOSE+ 6O2  6CO2 + 6H2O + Energy overview GLUCOSE+ 6O2  6CO2 + 6H2O + Energy

GLUCOSE+ 6 ?  6CO2 + 6H2O + Energy overview GLUCOSE+ 6 ?  6CO2 + 6H2O + Energy

GLUCOSE+ 6OXYGEN  6CO2 + 6H2O + Energy overview GLUCOSE+ 6OXYGEN  6CO2 + 6H2O + Energy

overview GLUCOSE+ 6OXYGEN  6? + 6? + ?

GLUCOSE+ 6OXYGEN  6CARBON DIOXIDE + 6WATER + ATP overview GLUCOSE+ 6OXYGEN  6CARBON DIOXIDE + 6WATER + ATP

overview C6H12O6 + 6O2  6CO2 + 6H2O + Energy

Respiratory rate is how fast organisms breathe in _____ and out ____ . Oxygen/carbon dioxide Respiratory rate is how fast organisms breathe in _____ and out ____ .

Respiratory rate more During exercise, the respiratory rate is increased to take in ___ oxygen.

If the respiratory rate increases, the heart rate ____ .

More oxygen in, means more oxygen to be pumped by the heart. Heart rate increases More oxygen in, means more oxygen to be pumped by the heart.

Co2 output increases If the respiratory rate increases oxygen intake, it ____ carbon dioxide output.

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