Homeostasis G12 A Level Quiz

What is homeostasis?

• The ability of an organism or system to maintain a stable internal environment despite external changes.

• The process of converting sunlight into chemical energy through photosynthesis.

• The ability of an organism to reproduce and pass on its genetic material.

• The process of breaking down food into smaller molecules for absorption.

What is a negative feedback loop?

• A negative feedback loop is a regulatory mechanism in which the output of a system enhances or increases the activity of the system itself.

• A negative feedback loop is a regulatory mechanism in which the output of a system is unrelated to the activity of the system itself.

• A negative feedback loop is a regulatory mechanism in which the output of a system has no effect on the activity of the system itself.

• A negative feedback loop is a regulatory mechanism in which the output of a system inhibits or reduces the activity of the system itself.

How does the body regulate temperature through thermoregulation?

• The body regulates temperature through thermoregulation by increasing heat production and reducing heat loss.

• The body regulates temperature through thermoregulation by only balancing heat production.

• The body regulates temperature through thermoregulation by increasing heat loss and reducing heat production.

• The body regulates temperature through thermoregulation by balancing heat production and heat loss.

What is osmoregulation?

• Process of regulating water and solute balance in organisms.

• Process of regulating nutrient intake in organisms.

• Process of regulating temperature in organisms.

• Process of regulating oxygen levels in organisms.

How does the body maintain water balance?

• Osmoregulation and kidney function

• Muscle contraction and nerve function.

• Digestion and absorption.

• Sweating and respiration.

What is blood glucose regulation?

• Process of increasing blood glucose levels

• Process of decreasing blood glucose levels

• Process of maintaining stable blood pressure levels

• Process of maintaining stable blood glucose levels

How does the body regulate blood glucose levels?

• Vitamins and minerals

• Hormones and enzymes

• Red and white blood cells

• Insulin and glucagon

What happens when blood glucose levels are too high?

• Hypoglycemia or low blood sugar levels.

• Hypothyroidism or underactive thyroid gland.

• Hypertension or high blood pressure.

• Hyperglycemia or high blood sugar levels

What happens when blood glucose levels are too low?

• Insulin resistance

• Diabetes

• Hyperglycemia

• Hypoglycemia

How does the body respond to maintain blood glucose homeostasis?

• Vitamins and minerals

• Red and white blood cells

• Insulin and glucagon

• Hormones and enzymes