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12 Cards in this Set
- Front
- Back
What is the function of enzymes? |
Enzymes act as very efficient catalysts for biochemical reactions. |
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What are enzymes composed of? |
Enzymes are primarily composed of proteins, which are polymers of amino acids. |
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How are enzymes protected against changes in A. Temperature? B. Acidity level? |
A. Hypothalamus B. Proteins within cells absorb acid/the respiratory system/kidneys |
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What happens to enzymes when A.Temp? ^B. Acidity^? |
A.^37.5 Bonds break (denature) B.Changes shape/effectiveness of enzyme. |
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Where is the thermoregulatory centre located? |
The hypothalamus. |
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3 major mechanisms for controlling acidity in tissues |
Proteins Respiratory system Renal ystem |
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Two substances dissolved in blood plasma that are regulated by hormones? |
Glucose Calcium |
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State the homeostatic set point for blood glucose. |
5mmol/L |
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Name the four basic components of a homeostatic control system. |
Sensors Control Centre Effectors Feedback loops |
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A. State a narrow range parameter: B. State a wide range parameter: |
A. Blood calcium: 2.2-2.6 mmol/L B. Blood volume: 52-83ml/Kg |
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Name the two major classes of drugs that may be used to correct homeostatic imbalances. |
Agonists and antagonists. |
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Where do these drugs act to exert their influence? |
Receptors. |