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Leaving Certificate BiologyHomeostasis EQ iQuiz
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Homeostasis means maintaining a constant …
Body shape Body mass
External environment
Internal environment
Which of the following is involved in homeostasis?
Brain Bones
Bladder Bronchi
Which of the following animals is an endotherm?
Salmon Seal
Snake Spider
Which of the following may result in a drop in water content of the
blood?
Sleeping Exercise
A cold day Drinking
The body temperature of an ectotherm varies with it’s …
Food intake Fluid intake
Internal temperature
External temperature
At which temperature do human enzymes work best?
35 °C 36 °C
37 °C 38 °C
In cold conditions the blood capillaries in the skin …
Move up near surface Constrict
Dilate None of these
Which of the following controls the water content of the blood?
ADH ADP
FSH HGH
Leaves of plants are well adapted for rapid gas exchange because
they are …
Narrow Thin
Thick Green
Which homeostatic organ controls the pH of the blood?
Heart Skin
Kidney Lung
Which of the following is not a means by which the body retains
heat?
Adipose tissue Hairs 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?
Oxygen Carbon dioxide
Carbon monoxide All of these
What is the main source of heat that keeps the body at a constant
temperature?
Exercise Metabolism
Eating Breathing
Name the main hormone involvedwhen internal body temperature
drops.
Oxytocin Insulin
Testosterone Thyroxine
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Homeostasis EQ iQuiz