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7th Grade Unit 2 Review (Human Body Systems and Homeostasis)

Total questions: 64

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

Organisms that are classified as multicellular must have:

a)

only one cell

b)

large cells

c)

more than one cell

d)

identical cells

2.

When the heart, blood vessels, kidneys and bladder work together, they are BEST described as

a)

cell

b)

tissue

c)

organism

d)

system

3.

Which of the following indicates the correct representation of the levels of organization in living systems?

a)

ecosystems → organs → organisms → tissues → cells → organ systems

b)

tissues → cells → organ systems → organisms → organs → ecosystems

c)

organisms → tissues → organ systems → cells → organs → ecosystems

d)

cells → tissues → organs → organ systems → organisms → ecosystems

4.

Each organ in the digestive system has a specific function. During digestion, food passes from the stomach into the small intestine. Which statement BEST describes what takes place in the small intestine?

a)

Nutrients are absorbed from the food

b)

Wastes are prepared to pass out of the body

c)

Food is churned with acid to break down proteins.

d)

Excess water is reabsorbed into the blood stream.

5.

The brain, spinal cord, and nerves are organs that perform which primary function?

a)

supporting the body and enabling it to move

b)

transporting oxygen, wastes, and nutrients throughout the body

c)

producing male and female gametes

d)

conducting messages to coordinate body functions

6.

Which system of the body is the brain and spinal cord a part of?

a)

nervous

b)

excretory

c)

endocrine

d)

repiratory

7.

Which system of the body is the brain and spinal cord a part of?

a)

nervous

b)

excretory

c)

endocrine

d)

repiratory

8.
What is the main function of the respiratory system?
a)
take in oxygen and exhale waste like carbon dioxide
b)
move nutrients throughout the body
c)
take in carbon dioxide and exhale oxygen
9.
What is the main job of the digestive system?
a)
break down foods into nutrients that can be used by the body 
b)
take in oxygen and exhale waste like caron dioxide
c)
pump blood throughout the body
10.
One of the main fuctions of the nervous system is to receive stimuli from inside and outside the body
a)
True
b)
False
11.
Which part of the body protects organs, provides support, and forms blood cells? 
a)
the brain
b)
the heart
c)
the liver
d)
the skeleton
12.
How do the muscular and skeletal systems work together to help the body?
a)
They provide blood to the body.
b)
They provide nutrients to the body.
c)
They provide structure and movement for the body.
d)
They provide oxygen and carbon dioxide to the body.
13.
Whitney accidentally touches a hot surface and then quickly pulls her hand away. Which two systems in the human body were involved with her action and reaction?
a)
nervous and muscular
b)
skeletal and circulatory
c)
nervous and respiratory
d)
muscular and respiratory
14.
Which best describes the relationship between the skeletal system and the circulatory system?  
a)
The skeletal system transports red blood cells after the circulatory system produces them.
b)
The skeletal system protects red blood cells and the circulatory system pumps those cells through veins and arteries.
c)
The skeletal system produces red blood cells and the circulatory system transports those cells where they need to go.
d)
The skeletal system helps put oxygen in red blood cells and the circulatory system helps those cells rid the body of carbon dioxide.
15.
Which two human body systems work closely together to distribute nutrients from food throughout the body?
a)
muscular and skeletal
b)
digestive and circulatory
c)
circulatory and respiratory
d)
cardiovascular and digestive
16.
Which organ system carries oxygen through the body?
a)
Circulatory 
b)
Respiratory
c)
Digestive
d)
Skeletal
17.
The esophagus, stomach, small and large intestines, gall bladder, pancreas, and liver are all a part of which body system?
a)
digestive
b)
circulatory
c)
excretory
d)
nervous
18.
When your body's temperature begins to rise, your body can maintain homeostasis by _________________.
a)
sweating
b)
shivering
c)
bleeding
d)
sleeping
19.
During breathing, which gas is taken in by the lungs and then carried to cells via the bloodstream?
a)
carbon dioxide
b)
oxygen
c)
helium
d)
nitrogen
20.
Identify the human body system that is made up of the kidneys, ureters, bladder, and urethra.
a)
Excretory
b)
Digestive
c)
Circulatory
d)
Endocrine
21.
Which of the following are the major organs of the circulatory system?
a)
Heart, arteries and, & veins
b)
Lungs, trachea, & bronchi
c)
bones, ligaments, & cartilage
d)
glands and hormones
22.
What is the function of the DIGESTIVE system?
a)
to circulate the blood through the body
b)
responsible for communication in the body
c)
produce hormones to maintain homeostatsis
d)
to breakdown food and distribute nutrients to the body
23.
This body system filters water and waste from the blood...
a)
Immune System
b)
Excretory System 
c)
Respiratory System
d)
Circulatory System
24.
This body system exchanges gases with the environment. 
a)
Endocrine System
b)
Lymphatic System (Immune)
c)
Respiratory System
d)
Circulatory System
25.
This body system supports and protects the organs such as the brain, lungs, and heart, and muscle attachment.
a)
Muscular System
b)
Integumentary System
c)
Skeletal System
d)
Respiratory System
26.

Which best describes the purpose of reproduction?

a)

It allows organisms to eliminate waste.

b)

It allows organisms to use and conserve energy.

c)

It allows organisms to pass on genetic information for the continuation of a species.

d)

It allows organisms to process food.

27.

Which refers to a stable internal balance?

a)

Immunity

b)

Homeostasis

c)

Transport

d)

Digestion

28.

Which system eliminates dissolved waste from the body?

a)

Digestive

b)

Urinary

c)

Circulatory

d)

Immune

29.

Which system most likely aids in the transfer of heat from the body?

a)

Skin

b)

Skeletal

c)

Circulatory

d)

Respritory

30.

Which system uses energy to allow the body to move?

a)

Skin

b)

Skeletal

c)

Circulatory

d)

Muscular

31.

Which system in the body provides structure and support?

a)

Skin

b)

Skeletal

c)

Circulatory

d)

Muscular

32.
What is the main function of a lysosome in an animal cell?
a)
Breaking down damaged cell parts
b)
Transporting substances out of the cell
c)
Holding genetic material
33.
The mouth, stomach, liver, small intestine and large intestine collectively constitute a(n)
a)
tissue.
b)
organ system. 
c)
tissue system.
d)
multicellular organism.
34.
The circulatory system interacts with what other body systems?
a)
the digestive and immune only
b)
the digestive, lymphatic and immune only
c)
the digestive, lympathic, respiratory, and immune only
d)
The circulatory system interacts with ALL other body systems.
35.
What is the main purpose of the excretory system?
a)
to remove wastes
b)
to transport nutrients
c)
to move the body
d)
to respond to stimuli
36.
Which three human body systems coordinate to cause an arm to move?  
a)
nervous, muscular, skeletal
b)
respiratory, muscular, digestive
c)
skeletal, circulatory, immune
d)
digestive, nervous, circulatory
37.
The process by which the human body "regulates itself" is _______________.  Some examples of this process include:
*sweating to cool the body and maintain a constant internal temperature.
*drink water to keep hydrated and to maintain water balance in the body
*excrete toxic wastes to maintain a clean bloodstream
a)
active transport
b)
passive transport
c)
homeostasis
d)
regulation
38.
Which of the following body systems is a collection of glands that produce hormones that regulate growth and development, metabolism, and reproduction.
a)
endocrine system
b)
respiratory system
c)
integumentary system
d)
lymphatic system
39.

Substances in the mouth and stomach breaking down food is an example of what?

a)

chemical change in food

b)

physical change in food

40.

Chewing food

a)

Physical

b)

Chemical

41.

saliva, stomach acid, bile

a)

chemical

b)

physical

42.

What is a stimulus?

a)

a famous rock band

b)

part of a tree

c)

a thing or event that causes a specific reaction in an organ or tissue.

d)

an incurable disease

43.
What organ is 1 pointing to?
a)
Kidney
b)
Urethra
c)
Bladder
d)
Ureter
44.
The skin helps regulate body temperature. When your body becomes too warm you...
a)
Sweat
b)
Blink
c)
Shiver
d)
Yawn
45.
Which of the following explains how shivering helps animals?
a)
Exercises their body
b)
Helps keep them cold
c)
Helps keep them warm
d)
Warns off predators
46.
When a lion hunts, it is responding to what stimulus?
a)
thirst
b)
heat
c)
sleep
d)
hunger
47.
When the body of an animal needs water, it signals the animal causing it to be...
a)
sleepy
b)
thirsty
c)
sweaty
d)
hungry
48.
Which of the following is an example of an external Stimuli?
a)
Becoming dehydrated and then taking a drink of water
b)
Getting a headache and then taking Excedrin
c)
Having hunger pains and then eating a sandwich
d)
Smelling Pizza and then eating a piece
49.
Which of the following is an example of internal stimuli?
a)
Smelling pizza and then eating a piece of pizza
b)
Seeing ice cream on television and then eating a bowl of ice cream
c)
After working out feeling sore in your legs and then placing ice on the sore spot
d)
After working out seeing a bottle of water and drinking water
50.
Internal Stimulus...
a)
How an organism reacts to a change and results in a change in behavior- the effect
b)
A change in an organisms internal environment
c)
The ability to maintain a stable internal environment (type of equilibrium or balance)
d)
A change to the environment outside an organism
51.
External Stimulus...
a)
How an organism reacts to a change and results in a change in behavior- the effect
b)
A change in an organisms internal environment
c)
The ability to maintain a stable internal environment (type of equilibrium or balance)
d)
A change to the environment outside an organism
52.

You feel hungry so you eat some food.

a)

external stimulus

b)

internal stimulus

53.
The stomach releases hydrochloric acid and enzymes that break down the protein in meats and turn the protein into amino acids. This change is
a)
Physical
b)
Chemical
54.
Chewing and tearing apart food into smaller pieces is...
a)
physical/mechanical
b)
chemical
55.
Saliva breaking down carbohydrates into sugars is...
a)
physical/mechanical
b)
chemical
56.
The stomach pushing and churning food is...
a)
physical/mechanical
b)
chemical
57.

These TWO cell organelles are only in plant cells

a)

Nucleus

b)

Mitochondria

c)

Cell wall

d)

Chloroplast

e)

Cytoplasm

58.
Which organelle has the same function as the skeletal system?
a)
nucleus
b)
mitochondria
c)
cell wall
d)
chloroplast
59.
Which body system is most like the cytoplasm ?
a)
circulatory
b)
skeletal
c)
excretory
d)
digestive
60.
Which organelle has the same function as the digestive system?
a)
cell membrane
b)
cell wall
c)
nucleus
d)
mitochondria
61.
Which organelles remove waste like the excretory system?
a)
cell wall and chloroplast
b)
cell membrane and mitochondria
c)
cell membrane and chloroplast
d)
cell membrane and vacuole
62.
Which organelle performs the same function as the nervous system, controlling the activities and responding to stimuli?
a)
chloroplast
b)
nucleus
c)
mitochondria
d)
cell membrane
63.
Which organelle performs the same function as the skeletal system, giving support and shape to the cell?
a)
cytoplasm
b)
nucleus
c)
mitochondria
d)
cell wall
64.
Which organelle performs the same function as the integumentary system, covering the insides of the cell and allowing or preventing materials going in or out?
a)
cell membrane
b)
nucleus
c)
mitochondria
d)
cell wall

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