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PLTW biomedical Unit 2 Review (1)
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PLTW biomedical Unit 2 Review (1)
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PLTW biomedical Unit 2 ReviewA young patient has an increased thirst and is very fatigued (no energy). The doctors tell the
patient that their pancreas is not functioning properly. This patient most likely has
______________. - ANS-Type 1 Diabetes
What is negative feedback? - ANS-A response to a change in the body that counteracts or
opposes the initial change.
What is positive feedback? - ANS-Feedback that increases the output of a process.
What is an example of positive feedback? - ANS-Blood clotting. The initial clotting triggers the
formation of more clots.
What is an example of negative feedback? - ANS-Insulin response to high blood sugar. If blood
sugar rises, insulin is released to lower blood sugar.
An out of shape, overweight adult is told that they have developed diabetes. The patient most
likely has ______________. - ANS-Type 2 diabetes.
In Type 1 diabetes, the pancreas does not produce ______________. - ANS-Insulin
What explains the high blood sugar that results from Type 2 diabetes? - ANS-The pancreas
makes insulin, but it is not used effectively by the cell.
A protein hormone released by the pancreas used to control blood glucose levels. -
ANS-Insulin.
What is homeostasis? - ANS-The maintenance of stable physiological conditions (such as body
temperature) under changing environmental conditions.
What is the effect of a lack of insulin or insulin that does not work properly in the body? -
ANS-Blood sugar (glucose) levels build up.
Type 2 diabetes - ANS-Graph of Glucose Tolerance Test results
Type 1 diabetes - ANS-Graph of Insulin Concentration Test results
What are the units of food energy? - ANS-Calories
How are atoms held together? - ANS-Bonds from between outer shell electrons of atoms.
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