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