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Homeostasis and Feedback

Total questions: 12

Worksheet time: 12mins

Name
Class
Date
1.

Negative Feedback Loops:

a)

amplify processes

b)

maintain a set target

c)

are initiated during childbirth

d)

are found only in plants

2.
The two types of feedback systems that help organisms maintain homeostasis are:
a)
positive and negative 
b)
receptor and effector
c)
static and dynamic
d)
minor and major
3.

Maintaining blood pH is an example of a:

a)

negative feedback loop

b)

positive feedback loop

4.
Maintaining body temperature is an example of a:
a)
negative feedback loop
b)
positive feedback loop
5.

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels.

a)

Positive Feedback Loop

b)

Negative Feedback Loop

6.

Name two types of feedback loops.

a)

Negative and Inhibitor

b)

Positive and Negative

c)

Stimulator and Increaser

d)

Thermostat and Regulator

7.

An example of a negative feedback loop is

a)

Blood glucose regulation

b)

Blood pressure regulation

c)

Thermoregulation

d)

All of the above

8.

An example of a positive feedback loop is ____________.

a)

Childbirth

b)

Blood Pressure regulation

c)

Body Temperature regulation

d)

All of the above

9.

Most of the homeostatic feedback mechanisms are positive feedback systems.

a)

True

b)

False

10.
Homeostasis in the human body is often maintained by a: 
a)
neutral feedback loop 
b)
solar feedback loop
c)
positive feedback loop
d)
negative feedback loop
11.
The maintenance of an organism’s internal environment is called:
a)
compensating
b)
homeostasis
c)
balancing
d)
routine
12.
Name the levels of organization in the human body in order from smallest to largest:
a)
Tissue, organ, organ system
b)
Organ system, tissue, organs, cells
c)
Cells, tissue, organs, organ system
d)
Cells , organs, tissue, organ system