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HOMEOSTASIS What is homeostasis? - PowerPoint PPT Presentation


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Enzymes. Water balance. Draw a graph to show what happens to enzyme activity as temperature increases?. How does your body gain water? How does your body lose water?. What are enzymes? What do we call the model that is used to explain how enzymes work?.

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Enzymes

Water balance

Draw a graph to show what happens to enzyme activity as temperature increases?

  • How does your body gain water?
  • How does your body lose water?

What are enzymes?

What do we call the model that is used to explain how enzymes work?

Excess amino acids are broken down by the l_____ and excreted by the k______. All s_____, and some w_____ are reabsorbed.

activity

temperature

What happens to enzymes at high temperatures? ______________

Temperature control

Your body needs to be kept at a c_______ temperature, particularly at your core, which contains all the important o_____. Heat is produced during r________ and lost to the a____.

HOMEOSTASIS

What is homeostasis?

How do control systems work?

Control s_____ keep conditions constant. They have r_____ to detect s_____. The processing c_____ decides what r______ is needed and send instructions to the e______.

How does it work?

Osmosis

Hypothermia

At what temperature can hypothermia start?

What are the symptoms of hypothermia?

How is hypothermia treated?

Heat stroke

What causes heat stroke?

What are the symptoms of heat stroke?

How is heat stroke treated?

The skin and brain have temperature r______. The b____ is the processing centre. S______ helps you cool down. S______ and the hairs standing up keeps you w____.

partially permeable membrane

What is a partially permeable membrane?

Name 3 things that move in or out of cells:

What is osmosis?