Leaving Certificate Biology Homeostasis EQ iQuiz SECOND Press the F5 Key to Begin, Then click on this Blue Box FIRST In PowerPoint 2007 if you see a Security.

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Leaving Certificate Biology Homeostasis EQ iQuiz SECOND Press the F5 Key to Begin, Then click on this Blue Box FIRST In PowerPoint 2007 if you see a Security Warning click HERE on Options… and then click on  Enable this content

Homeostasis means maintaining a constant … Body shapeBody mass External environment Internal environment

Which of the following is involved in homeostasis? BrainBones BladderBronchi

Which of the following animals is an endotherm? SalmonSeal SnakeSpider

Which of the following may result in a drop in water content of the blood? SleepingExercise A cold dayDrinking

The body temperature of an ectotherm varies with it’s … Food intakeFluid intake Internal temperature External temperature

At which temperature do human enzymes work best? 35 °C36 °C 37 °C38 °C

In cold conditions the blood capillaries in the skin … Move up near surface Constrict DilateNone of these

Which of the following controls the water content of the blood? ADHADP FSHHGH

Leaves of plants are well adapted for rapid gas exchange because they are … NarrowThin ThickGreen

Which homeostatic organ controls the pH of the blood? HeartSkin KidneyLung

Which of the following is not a means by which the body retains heat? Adipose tissueHairs stand up Blood capillaries constrict Sweat is released

ADH acts on which of the following parts of the nephron? Proximal tubule & collecting Duct Proximal tubule & Loop of Henle Distal tubule & collecting Duct Distal tubule & Loop of Henle

The concentration in the blood of which of the following gases, controls breathing? OxygenCarbon dioxide Carbon monoxideAll of these

What is the main source of heat that keeps the body at a constant temperature? ExerciseMetabolism EatingBreathing

Name the main hormone involved when internal body temperature drops. OxytocinInsulin TestosteroneThyroxine

How did you do? Click this Blue Box to find out Homeostasis EQ iQuiz

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