Homeostasis and Negative/Positive Feedback

What is homeostasis?

• A specific organ in the human body

• A type of feedback mechanism

• A state of constant change in the body

• A process by which organisms maintain a stable internal environment

Tags

NGSS.HS-LS1-3

Which term is used to describe organisms like the bearded dragon that can have their body temperature fluctuate with the environment?

• Homeotherm

• Endotherm

• Ectotherm

• Thermoregulator

Tags

NGSS.HS-LS1-3

What is negative feedback?

• A mechanism that stops all bodily functions

• A feedback loop that disrupts homeostasis

• A response that increases the intensity of a variable

• A response that decreases the output of a system

Tags

NGSS.HS-LS1-3

What role does insulin play in the body?

• It has no effect on glucose levels

• It decreases blood sugar levels by facilitating glucose uptake by cells

• It is only involved in fat metabolism

• It increases blood sugar levels

What is an example of positive feedback mentioned in the text?

• The process of a human baby being born

• The regulation of blood sugar

• Regulation of body temperature

• The response to a cold environment

Tags

NGSS.HS-LS1-3

What happens when blood glucose levels are too low?

• Insulin is released

• Glucagon is released

• Blood vessels dilate

• Sweat glands are activated

Tags

NGSS.HS-LS1-3

What is the term used to describe humans in terms of their temperature regulation?

• Poikilotherm

• Mesotherm

• Endotherm

• Ectotherm

Tags

NGSS.HS-LS1-3

What is the primary function of sweat when the body is too hot?

• To signal the body to stop moving

• To increase body temperature

• To cool the body down as it evaporates

• To produce more heat

Tags

NGSS.HS-LS1-3

What disorder is mentioned as an example of a problem in the feedback systems?

• Hypothyroidism

• Type 1 diabetes

• Hypertension

• Hyperthermia

Tags

NGSS.HS-LS1-3

Why is understanding feedback important?

• To understand how to increase body temperature

• To understand the role of hormones in digestion

• To understand what happens when there is a problem in feedback systems

• To learn how to sweat more efficiently

Tags

NGSS.HS-LS1-3