Which best describes a negative feedback loop?

Restores body conditions to their original range

Which best describes homeostasis?

A feedback system that maintains equilibrium

If you haven't eaten in a while, you would expect ______ to be released from _________ to raise blood glucose levels.

Glucagon / alpha-cells of the Islets of Langerhans

An increase in ADH secretion causes...

An increase in water uptake in the distal tubule water

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SBI 4U1P - Homeostasis: Introduction

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A #science #biology Quiz on the basics of #homeostasis #Grade12IB

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Questions 15

Answers

1
This is the area of the nephron responsible for most nutrient reabsorption.
Loop of Henle
Proximal tubule
Distal tubule
Bowman's capsule
2
This is the name of the structure in the kidney responsible for ultrafiltration of the blood.
Nephron
Pituitary gland
Renal pelvis
Renal Medulla
3
Which best describes a negative feedback loop?
Moves body conditions away from their original range
Is unrelated to body conditions
Body conditions do not require negative feedback loops
Restores body conditions to their original range
4
Which best describes homeostasis?
A feedback system that maintains equilibrium
A feedback system causing change from the norm in the body
A negative feedback system
A positive feedback system
5
What happens when endotherms become to cold?
Vasoconstriction
2 of the above
Sweating
Body hair stands erect
6
What happens when endotherms become to hot?
Nothing
Shivering
Vasodilation
Vasoconstriction
7
The part of a control mechanism that causes change is called...
Sensory Receptor
Regulator
Coordinating Center
Affector
8
If your urine contained proteins and blood cells, but still contained no glucose, you may be suffering from
Kidney stones
Diabetes mellitus
Diabetes insipidus
Bright's disease
9
If you haven't eaten in a while, you would expect ______ to be released from _________ to raise blood glucose levels.
Glucagon / alpha-cells of the Islets of Langerhans
Insulin / beta-cells of the Islets of Langerhans
Glucagon / beta-cells of the Islets of Langerhans
Insulin / alpha-cells of the Islets of Langerhans
10
This hormone is released to increase sodium uptake by the distal tubule.
ADH
Renin
Aldosterone
Glucagon
11
Which of the following hormones would NOT bring about an increase in blood glucose levels?
Glucagon
Epinephrine
Cortisol
Insulin
12
Ectotherms rely on what to maintain body temperature
Positive Feedback loops
Behavioural adaptations
Negative feedback loops
Body temperature does not need to be maintained
13
An increase in ADH secretion causes...
An increase in water uptake in the proximal tubule water
A decrease in water uptake in the distal tubule water
An increase in water uptake in the distal tubule water
A decrease in water uptake in the proximal tubule water
14
Homeostasis is often referred to as...
Dynamic equilibrium
Static equilibrium
Unstable equilibrium
Stable equilibrium
15
The component of control that monitors change is called...
Motor Receptor
Regulator
Sensory Receptor
Coordinating Center

SBI 4U1P - Homeostasis: Introduction Flashcards | StudBud