wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

7th Grade Accelerated science review

Total questions: 163

Worksheet time: 3hrs 53mins

Name
Class
Date
1.
Plants perform photosynthesis through this organelle.  It captures energy from the sun and uses it to produce food for the cell.
a)
Chlorophyll
b)
Chloroplasts
c)
Mitochondria
d)
Golgi Apparatus
2.
An organism made of one cell is called
a)
unicellular organism
b)
multicellular organism
3.
This organelle takes food and turns it into ENERGY for plant and animal cells.
a)
Chloroplast
b)
Mitochondria
c)
Lysosome
d)
Ribosome
4.

Which type of cell does the picture show?

a)

Animal Cell

b)

Plant Cell

c)

Bacteria Cell

d)

Protist Cell

5.

Identify which type of cell this picture is showing.

a)

Animal

b)

Plant

c)

Bacteria

d)

Protist

6.
Cellular respiration takes place in the
a)
nucleus
b)
cytoplasm
c)
ribosomes
d)
mitochondria
7.

What is the purple structure in the cell?

a)

Cytoplasm

b)

Nucleus

c)

Cell wall

d)

Flagellum

8.

What is a major difference between plant and animal cells?

a)

Plant cells are always at least 10 times larger

b)

plant cells are always green

c)

plant cells are surrounded by cell walls and animal cells are not.

d)

animal cells have mitochondria and plants cells do not

e)

animal cells have a nucleus and plant cells do not

9.

What structures can be present in a plant cell, but not in an animal cell?

a)

cell membrane

b)

mitochondria

c)

nucleus

d)

cell wall

e)

chloroplast

10.
Both plant AND animal cells have .....
a)
cell membrane, cell wall, nucleus
b)
cell membrane, cytoplasm, nucelus
c)
cell membrane, chloroplast and nucleus 
d)
cell wall, vacuole, nucleus 
11.
In which organelle (part of the cell) does photosynthesis take place?
a)
mitochondria
b)
chloroplast
c)
nucleus
d)
cell membrane
12.
What is the source of energy for photosynthesis?
a)
carbohydrates-chemical
b)
sunlight-radiant
c)
heat-thermal
d)
television-electrical
13.

What major energy transformation occurs during photosynthesis?

a)

Thermal --> Chemical

b)

Kinetic --> Radiant

c)

Chemical --> Radiant

d)

Light --> chemical

14.
What are the bubbles rising in the test tube?
a)
nitrogen gas
b)
carbon dioxide gas
c)
glucose
d)
oxygen gas
15.

Which of the following is the best description of the process shown in the image below?

a)

Water, oxygen, and light are inputs while carbon dioxide and glucose are outputs.

b)

Water, oxygen, carbon dioxide, and light are inputs and glucose is the output.

c)

Water, carbon dioxide, and light are inputs while oxygen and glucose are outputs.

d)

Glucose, oxygen, and light are inputs while carbon dioxide and water are outputs.

16.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
17.

Which cells are from multicellular organisms? You can select more than one.

a)

a

b)

b

c)

c

d)

d

18.

What part of the cell is the arrow pointing to?

a)

cell membrane

b)

mitochondria

c)

nucleus

d)

cytoplasm

e)

vacuole

19.

What part of the cell is the arrow pointing to?

a)

cell membrane

b)

mitochondria

c)

nucleus

d)

cytoplasm

e)

vacuole

20.

What part of the cell is the arrow pointing to?

a)

cell membrane

b)

mitochondria

c)

nucleus

d)

cytoplasm

e)

vacuole

21.

What part of the cell is the arrow pointing to?

a)

cell wall

b)

mitochondria

c)

nucleus

d)

cytoplasm

e)

vacuole

22.

What part of the cell is the arrow pointing to?

a)

cell wall

b)

mitochondria

c)

nucleus

d)

chloroplast

e)

vacuole

23.

What part of the cell is the arrow pointing to?

a)

cell wall

b)

mitochondrion

c)

nucleus

d)

chloroplast

e)

large vacuole

24.
Based on the information in the table, which of the four substances below is a compound?
a)
CO
b)
Si
c)
He
d)
Fe
25.
Which group of elements will not react with other elements?
a)
metals
b)
metalloids             
c)
non-metals         
d)
noble gases
26.
The following equation, H2O (liquid) + heat → H2O (gas), describes a
a)
physical change   
b)
mixture   
c)
chemical change
d)
solution
27.
The following equation, N2 + 3 H2 → 2 NH3 .describes a
a)
physical change   
b)
mixture 
c)
chemical change
d)
element
28.
Which describes a physical change followed by a chemical change?
a)
cutting wood then painting it green
b)
taking ice cream out of the freezer then letting it melt
c)
putting gasoline in the car then starting the engine
d)
crushing a sugar cube then dissolving it in water
29.
In the formula for glucose, C6H1206, how many atoms of hydrogen are indicated?
a)
one
b)
six                                 
c)
twelve                 
d)
twenty-four
30.
Some common substances and their chemical formulas are listed in the chart.  Which of these substances are elements?
a)
hydrochloric acid and carbonic acid
b)
carbon dioxide and water
c)
oxygen and helium
d)
water and oxygen
31.
The Statue of Liberty was originally made of Copper. Why is it green now?
a)
It got moldy
b)
It was painted green, which is a physical change
c)
It experienced a chemical change and rusted
d)
The sun caused it to change color
32.
Which is a Chemical property?
a)
Thermal Conductivity 
b)
Density
c)
Malleability 
d)
Flammability 
33.
What is the total number of atoms in CH4 (Methane)
a)
2
b)
4
c)
1
d)
5
34.
How many Al atoms are there in total in this compound?         Al2O3
a)
2
b)
5
c)
6
d)
4
35.
One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?
a)
evaporation; chemical change
b)
condensation; physical change 
c)
evaporation; physical change
d)
condensation; chemical change
36.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
37.
What is happening between points B and C?
a)
Evaporation
b)
The temperature rises
c)
Melting
d)
Boiling
38.
Why does the temperature stay the same between points D and E?
a)
There is no phase change taking place
b)
Ice is melting
c)
There is no heat being added
d)
There is a phase change taking place
39.
Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?
a)
The shape of the coal changes
b)
Oxygen is present
c)
A new substance is produced
d)
Coal is made up of more than one element
40.

A student writes the following observations about aluminum in his notebook: Please select all the physical changes

a)

It will bend.

b)

It will not rust.

c)

It will melt at 661 degrees

d)

It conducts electricity and heat.

e)

It is shiny and reflects light.

41.
What molecule is this? 
a)
Carbon Dioxide
b)
Methane
c)
Water
d)
Sodium Chloride 
42.
Which letter represents hydrogen?
a)
A
b)
B
c)
C
d)
D
43.
Which letter represents oxygen?
a)
A
b)
B
c)
C
d)
D
44.

The graph below shows the solubility of two different chemical compounds. Compared to copper sulfate, approximately how many more grams of potassium bromide would dissolve at 90°C?

a)

20

b)

40

c)

60

d)

80

45.

Which of the following will cause a lump of sugar to dissolve faster?

a)

chopping it into pieces

b)

adding more sugar

c)

stop stirring the water

d)

adding cold water

46.

A mixture of salt, sand, and water is thoroughly stirred. It is then filtered through a filter paper as shown in the diagram below. Which substance(s) pass through the filter?

a)

salt and sand

b)

sand and water

c)

water and salt

d)

water only

47.

Which of the following processes can separate dissolved salt from water?

a)

filtration

b)

evaporation

c)

stirring

d)

sedimentation

48.

The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they

a)

are metals

b)

have the same atomic mass

c)

react in similar ways

d)

are noble gases

49.

Water (H2O) is not found on the Periodic Table of the Elements because water is

a)

an atom

b)

a mixture

c)

a liquid

d)

a compound

50.

A student mistakenly dumped iron filings and sand into a beaker of salt that the teacher needed for a salt water fish tank. Check all that needs to be done to separate all the substances back to original.

a)

use a magnet to separate iron filings

b)

evaporate the water to separate the water from the salt

c)

filter salt from water using a coffee filter

d)

filter the salt water from the sand using a coffee filter

e)

add water to make a solution of salt water and sand mixture

51.

Figure A shows a beaker containing water, sand, and salt. The salt is totally dissolved in the water. Figure B shows the contents of the beaker being poured through filter paper in a funnel over a flask. Figure C shows the same flask after sitting at room temperature for 15 days. After 15 days, the flask contains only solid salt particles. Why are the contents of the flask in figure B are classified as a mixture.

a)

because it is the physical combination of two or more substances. Can be separated by filtration and settling.

b)

because it is the chemical combination of two or more elements. Cannot be physical separated.

52.

What does each sphere represent?

a)

different elements

b)

compounds

c)

chemical bonds

53.

Elements that are metals are

a)

C

b)

Cu

c)

Ag

d)

Zn

e)

P

54.

Which elements will react the most similar?

a)

C

b)

F

c)

O

d)

Cl

e)

Ar

55.

In which state of matter do the particles spread apart and fill all the space available to them?

a)

solid

b)

liquid

c)

gas

56.

In which state of matter are particles packed tightly together in fixed positions?

a)

solid

b)

liquid

c)

gas

57.

Find the volume of this piece of brass.

a)

50.0 g

b)

10.0 cm

c)

6.0 cm3

d)

12.0 cm3

58.

What is the volume of the fish?

a)

18 cm3

b)

6 cm3

c)

38 cm3

59.
Which box has a higher density?  
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
60.
Calculate the density of the cube.
a)
3 g/cm3
b)
4 g/cm3
c)
2 g/cm3
d)
5 g/cm3
61.

What is the mass on the triple beam balance?

a)

345.5 g

b)

304.5 g

c)

700.5 g

d)

304.5

62.
What is the volume of the liquid in this graduated cylinder?
a)
19 mL 
b)
35 mL 
c)
24 mL 
d)
1.9 mL
63.
What is the volume of the screw?
a)
10 mL
b)
13 mL
c)
16 mL
d)
3 mL
64.
A piece of metal has a mass of 35.4 grams and a volume of 6cm3. According to the table what metal is it?
a)
Aluminum
b)
Scandium
c)
Radium
d)
Xenon
65.

If you cut a wooden block in half, each half would have


a) Half the density of the original piece


b) Twice the density of the original piece


c) The same density as the original piece


d) No density at all

a)

Half the density of the original piece

b)

twice the density of the original piece

c)

The same density as the original piece

d)

No density at all

66.

A candle floats in water but sinks in alcohol. This is because

a)

The candle is less dense than the alcohol but more dense than the water

b)

The candle is more dense than the alcohol but less dense than the water

c)

The water is more dense than the candle but less dense than the alcohol

d)

The candle is less dense than both the water and alcohol

67.

The density of hot water

a)

Is greater than the density of cold water

b)

Is less than the density of cold water

c)

The same as the density of cold water

d)

Depends on the volume of water

68.

The density of hot and cold water are different mainly because

a)

The molecules in hot water move slower and are slightly closer together

b)

The molecules in hot water are larger

c)

The molecules in hot water move faster and are slightly further apart

d)

The molecules in cold water move faster and are further apart

69.

What is the sequence of the energy transformations represented in the diagram?

a)

mechanical →chemical →solar

b)

solar →electrical →mechanical

c)

mechanical →electrical →solar

d)

solar →chemical →electrical

70.

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. At which position does the boulder have the greatest kinetic energy?

a)

A

b)

B

c)

C

d)

D

71.

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. At which position does the boulder have the greatest potential energy?

a)

A

b)

B

c)

C

d)

D

72.

Compared to the particles in a hardened lava sample, the particles in a liquid lava sample

a)

have a lower temperature

b)

are moving faster

c)

have less kinetic energy

d)

are closer together

73.

The diagram shows a home with a solar heating system. What is the original source of energy for this heating system?

a)

heated water

b)

heated air

c)

sunlight

d)

water pump

74.

Which energy source is considered nonrenewable?

a)

moving water

b)

wind

c)

fossil fuel

d)

biomass

75.

What state of energy is demonstrated by a skier speeding downhill?

a)

kinetic

b)

nuclear

c)

potential

d)

light

76.

The diagram shows a cross section of a waterfall. Points A, B, C, and D represent locations in the stream. At which location does the water have the greatest kinetic energy?

a)

A

b)

B

c)

C

d)

D

77.

The illustration shows an example of energy changing forms. Which changes in energy form are illustrated in the diagram?


a)

electrical → sound → light and mechanical

b)

mechanical → light → sound and electrical

c)

sound → mechanical → light and electrical

d)

light → electrical → mechanical and sound

78.

The diagram shows a pinwheel rotating above a lit candle. The arrows indicate the direction of airflow. Which energy transformation is best shown in this diagram?

a)

heat to mechanical

b)

mechanical to light

c)

sound to heat

d)

heat to sound

79.

The diagram shows a student using a spring scale to pull a wooden block up a ramp
that is resting on a stack of books. Which change would require more force to pull the wooden block up the ramp?

a)

Have the student use two hands.

b)

Reduce the mass of the wooden block.

c)

Restack the books so the thinnest book is on the bottom.

d)

Glue sandpaper to the surface of the ramp.

80.

The gravitational force between the Moon and Earth depends on

a)

their masses, only

b)

their masses and how far apart they are

c)

their diameters, only


d)

their diameters and how far apart they are

81.

The diagram shows a spinning water sprinkler. Water comes through a hose and is sprayed by the sprinkler. Which principle best explains why the sprinkler spins?

a)

Every action has an equal and opposite reaction.

b)

Solid substances are usually more dense than liquid substances.

c)

Energy is released when water condenses.

d)

Most substances expand when heated and contract when cooled.

82.

Four machines that convert electrical energy to mechanical energy were tested for fuel efficiency. The results of the test are shown in the chart. Which machine produced the most heat energy?

a)

A

b)

B

c)

C

d)

D

83.

Which graph shows an object slowing down?

a)

1

b)

2

c)

3

d)

4

84.

The diagrams below show smooth blocks of wood being pushed across the same surface. The mass of the block and amount of force applied are labeled in each diagram. In which diagram would the block of wood have the greatest acceleration?

a)

1

b)

2

c)

3

d)

4

85.

The graph shows the distance traveled by four cars, A, B, C, and D, over a period of time. The average speed of a moving object can be determined by using the equation below. Which car traveled at an average speed of 20 kilometers per hour? s = d /t

a)

A

b)

B

c)

C

d)

D

86.

A person uses a bow to shoot an arrow at a target. In which diagram does the bow and arrow have the greatest amount of potential energy?

a)

1

b)

2

c)

3

d)

4

87.
1.  This picture shows warm air rising and cool air falling in a cycle. This is an example of which process?
a)
Conduction
b)
Convection
c)
Radiation
88.
2.  A metal spoon that gets warm when used to stir hot soup is an example of:
a)
Conduction
b)
Convection
c)
Radiation
89.
3. The Sun’s rays take about 8 minutes to reach Earth’s atmosphere. Which process describes the thermal energy transfer between the Sun and the Earth?
a)
Conduction
b)
Convection
c)
Radiation
90.
8. The picture is a Bunsen burner heating a beaker of water. The arrows show the transfer of heat energy in the water. Which process is primarily responsible for the transfer of heat?
a)
Conduction
b)
Convection
c)
Radiation
91.
11. Pans A & B shown above have been on a hot stove for 10 minutes. Pan A has a metal handle and pan B has a plastic-coated handle. Which handle  would be hotter?___________ Why?_________________  
a)
Pan A because the metal is a conductor of heat.
b)
Pan B because there is an insulator on the pan.
c)
Pan A because there metal is an insulator.
d)
Pan B because the metal conducts heat.
92.
12. An ice cube melts at room temperature because heat moves from ____________________  to ___________________.
a)
Cooler to warmer
b)
Warmer to cooler
93.

The diagram shows a metal spoon in a glass of water. Which process causes the metal spoon to appear split or broken?

a)

absorption

b)

refraction

c)

convection

d)

reflection

94.

The diagram below shows a glass containing a liquid and ice cubes. Which process causes water droplets to form on the outside of the glass?

a)

evaporation

b)

condensation

c)

freezing

d)

melting

95.

A wet shirt is put on a clothesline to dry on a sunny day. The shirt dries because water molecules

a)

gain heat energy and condense

b)

lose heat energy and condense

c)

gain heat energy and evaporate

d)

lose heat energy and evaporate

96.

The drawings below represent four different forms of electromagnetic energy. Which diagram represents electromagnetic energy with the shortest wavelength?

a)

A

b)

C

c)

B

d)

D

97.

Which diagram best represents light being reflected after striking the flat surface of a mirror?

a)

1

b)

2

c)

3

d)

4

98.

Energy from the Sun reaches Earth mainly by the process of

a)

conduction

b)

reflection

c)

convection

d)

radiation

99.

A common characteristic of sound waves is that they

a)

are created by vibrations

b)

travel fastest through empty space

c)

travel in straight lines toward the source

d)

move at the speed of light

100.

The diagram shows the relative wavelengths for several types of electromagnetic energy. Which type of electromagnetic energy has a shorter wavelength than ultraviolet waves?

a)

visible light

b)

x rays

c)

microwaves

d)

infrared light

101.

Which graph correctly shows the effect of heat energy on the motion of molecules of matter?

a)
b)
c)
d)
102.

The picture below shows a ringing bell inside a vacuum jar. As air is pumped from the vacuum jar, the sound level of the ringing bell will decrease until it can no longer be heard. This happens because air must be present in the jar in order for

a)

sound to be transferred

b)

the rubber to seal the jar

c)

electricity to flow through the wires

d)

the bell clanger to vibrate

103.

Which graph best represents the relative distance between the particles of most substances in their solid, liquid, and gas states?

a)

1

b)

2

c)

3

d)

4

104.

How is heat energy transferred within the liquid water in the pond?

a)

compound formation

b)

chemical reactions

c)

convection currents

d)

nuclear reactions

105.

Base on diagram, which shows two insulated Styrofoam cups of water connected by an aluminum bar. The thermometers show the temperature of the water in cup A and cup B at the beginning of a heat-flow experiment. Over the next 15 minutes, which changes would most likely occur?

a)

The temperature in cup A will decrease and the temperature in cup B will increase.

b)

The temperature in cup A will decrease and the temperature in cup B will decrease.

c)

The temperature in cup A will increase and the temperature in cup B will increase.

d)

The temperature in cup A will increase and the temperature in cup B will decrease.

106.

Base on diagram, which shows two insulated Styrofoam cups of water connected by an aluminum bar. The thermometers show the temperature of the water in cup A and cup B at the beginning of a heat-flow experiment. Which process is most responsible for the temperature changes that will take place?

a)

radiation of heat from the water in the cups to the thermometers

b)

conduction of heat through the aluminum bar

c)

radiation of heat from the water in the cups into the air

d)

conduction of heat through the air to the water in the cups

107.

The diagram below represents several forms of electromagnetic energy. Which feature best distinguishes one form of electromagnetic energy from another?

a)

color

b)

wavelength

c)

surface temperature

d)

distance traveled

108.

The diagram shows water being heated in a flask. The flask has a rubber stopper with a glass tube extending through it. The current level of the water in the glass tube is indicated. The temperature of the water is 25°C. If heating continues, the water in the glass tube will most likely

a)

turn into a solid

b)

move into the flask

c)

become more dense

d)

rise higher in the tube

109.

Which diagram best represents molecules of matter in the solid phase?

a)

1

b)

2

c)

3

d)

4

110.

The diagram below shows what occurs when a ray of light strikes and enters a pond. Which property of light is illustrated when the ray enters the pond?

a)

refraction

b)

absorption

c)

reflection

d)

emission

111.

The diagram represents four processes, labeled A, B, C, and D, that occur when water changes phase. Which process is represented by B?

a)

condensing

b)

evaporating

c)

freezing

d)

melting

112.

The diagram represents four processes, labeled A, B, C, and D, that occur when water changes phase. Which process is represented by C?

a)

condensing

b)

evaporating

c)

freezing

d)

melting

113.

The diagram represents four processes, labeled A, B, C, and D, that occur when water changes phase. Which process is represented by A?

a)

condensing

b)

evaporating

c)

freezing

d)

melting

114.

The diagram represents four processes, labeled A, B, C, and D, that occur when water changes phase. Which two processes increase the motion of the molecules?

a)

A and B

b)

C and D

c)

B and C

d)

D and A

115.
As an object's mass increases, its gravitational pull will ____________.
a)
decrease
b)
increase
c)
stay the same
d)
get weaker
116.
What pattern is evident on this line graph?
a)
Ability to do situps had no change as the days continued
b)
Ability to do situps decreased as the days continued
c)
Ability to do situps increased as the days continued
d)
Ability to do situps does not pertain to the graph
117.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
d)
Compound
118.
What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?
a)
the paper used
b)
the type of paper airplane
c)
the distance of each plane's flight
d)
how hard the plane is thrown
119.

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the dependent variable is ...

a)

The type of plant

b)

The amount of sunlight

c)

The growth of the plants

d)

The type of liquid

120.

How much water does a plant need to grow?

Which are the constants?

a)

The type of plant

b)

How much water you use

c)

Location of plant

d)

How much the plant grows

e)

How long you grow the plant

121.
Where do we read the level of liquid?
a)
The highest point the liquid touches
b)
The bottom of the meniscus
c)
Half way between, we make an educated guess and round it
d)
Somewhere about there
122.
What amount does this triple beam balance read?
a)
72.1 grams
b)
270.0 grams
c)
272.1 grams
d)
272.0 grams
123.
Round 47.941 to the nearest tenth.
a)
47.9
b)
48
c)
47.91
d)
48.1
124.
What is the length of the eraser?
a)
3 cm 
b)
2 cm 
c)
5 cm
d)
7 cm
125.
What is the length of the ribbon?
a)
9 cm
b)
2 cm
c)
7 cm
d)
11 cm 
126.
What is the mass on the triple beam balance? 
a)
290.2 g
b)
292 g
c)
290.5 g
d)
295.2 g
127.
Which of the following would have the greatest gravitational attraction between the two masses
a)
Picture A
b)
Picture B
c)
Picture C
128.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move up. 
129.
LT4: The graph shows Ashley riding her bike to Maria's house. 
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
130.
LT4: The graph shows Ashley riding her bike to Maria's house. 
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
131.
During which interval is the object speeding up?
a)
A to B
b)
B to C
c)
D to E
d)
E to F
132.
During which interval is the object slowing down?
a)
A to B
b)
D to E
c)
E to F
d)
G to H
133.
What does heredity mean?
a)
DNA being passed down from one generation to the next.
b)
Passing down acquired characteristics to your offspring.
c)
Leaving money in a will to your children
d)
all DNA is kept in the nucleus
134.
Where is all the genetic material inside a cell?
a)
nucleus
b)
vacuole
c)
cell membrane
d)
ribosome
135.
In asexual reproduction, all of the offspring are:
a)
Physically Identical
b)
Genetically Identical
c)
Physically and Genetically Identical
d)
Not Identical
136.
a)

asexual reproduction

b)

sexual reproduction

c)

sporulation

d)

regeneration

137.
What percentage of chromosomes are handed down by a parent cell in asexual reproduction?
a)
75%
b)
25%
c)
50%
d)
100%
138.
What are some of the facts about asexual reproduction?
a)
Takes only one mate to reproduce and takes a longer time to reproduce
b)
Takes a shorter amount of time to reproduce and it takes two mates to reproduce
c)
Reproduces diverse offspring and takes a longer time to reproduce
d)
Takes only one mate to reproduce and takes a shorter time to reproduce
139.

if a body cell has 24 chromosomes how many will it have at the end of cell division.

a)

6

b)

12

c)

24

d)

48

140.

In multicellular organisms, why does cell division occur?

a)

Growth of cells

b)

Repair of cells

c)

Create new organism

141.

In unicellular organisms, why does cell division occur?

a)

Growth of cells

b)

Repair of cells

c)

Create new organism

142.

How many offspring cells are created from cell division?

a)

1

b)

2

c)

3

d)

4

143.
If two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is -
a)
identical to only one parent
b)
identical to all of its siblings
c)
a unique combination of traits
d)
the recessive traits of each parent
144.
When comparing the offspring of sexually and asexually reproducing organisms, we would expect the genetic material (DNA) of the sexually reproducing organism to -
a)
contain fewer mutations
b)
be lesser in quantity
c)
be simpler overall
d)
show more variation
145.
Structure (a) is a ____.
a)
chromosome
b)
chromatid
c)
centromere
146.

If a dog muscle cell has 10 chromosomes, how many chromosomes does a each new cell have after cell division is complete?

a)

5

b)

20

c)

55

d)

10

147.

Which of the following is true about human chromosomes?

a)

Body cells have 46 and sex cells have 23.

b)

Body cells have 23 and sex cells have 46.

c)

Body cells have 48 and sex cells have 24.

d)

Body cells have 47 and sex cells have 23.

148.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its BODY cells?
a)
20
b)
40
c)
80
d)
160
149.
What is the percentage of offspring that have green pods?
a)
100%
b)
75%
c)
50%
d)
25%
150.

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed? Brown is Dominant (B) and Blue is (b) recessive

a)

0 %

b)

25%

c)

50%

d)

75%

151.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
152.

DNA is most closely associated with the

a)

cytoplasm

b)

chromosomes

c)

cell membrane

d)

cell wall

153.

The chromosomes are found in the

a)

cytoplasm

b)

cell membrane

c)

nucleus

d)

cell wall

154.

A change in the structure of DNA in the egg cell could result in a

a)

new trait

b)

bud

c)

spore

d)

clone

155.

In squirrels gray (G) is dominant over black (g) fur color. If a Gg squirrel is crossed with a gg squirrel,

what is the probability that the offspring will have black fur?

a)

0 %

b)

25 %

c)

50 %

d)

100 %

156.

What is a change in an organism that allows for it to survive in its environment?

a)

homologous

b)

vestigial

c)

survival

d)

adaptation

157.
Genetic variation can arise from a random change in the DNA of a gene.  The change is called a(n)
a)
mutation
b)
gene flow
c)
gene pool
d)
allele
158.

Which two systems work together to cause body motion?

a)

A and B

b)

A and C

c)

C and D

d)

B and F

159.

Which system exchanges oxygen for carbon dioxide?

a)

B

b)

C

c)

G

d)

D

e)

E

160.

Which systems work together to provide oxygen for all body cells and tissues?

a)

A and G

b)

C and D

c)

C and E

d)

B and G

161.

Which process releases energy from digested food?

a)

photosynthesis

b)

cellular respiration

c)

vitamin production

d)

Fertilization

162.

Which sequence represents the correct levels of organization for multicellular organisms?

a)

cell → tissue → organ → organ system

b)

tissue → organ → cell → organ system

c)

organ system → organ → cell → tissue

d)

cell → organ → tissue → organ system

163.

Insulin and glucagon are hormones that affect blood sugar levels. The diagram below shows the feedback system used by the human body to increase and decrease blood sugar levels. This feedback system is one way that the human body

a)

circulates gases

b)

maintains equilibrium (homeostasis)

c)

destroys viruses

d)

transports nutrients

Similar Resources on Wayground

The Universe Reteach

160 questions

The Universe Reteach

quiz

Worksheet

•

8th Grade

Elettronica - Farina

165 questions

Elettronica - Farina

quiz

Worksheet

•

KG - Professional Dev...

Energy Water & Climate Full Review

164 questions

Energy Water & Climate Full Review

quiz

Worksheet

•

8th Grade

Climate Revision

165 questions

Climate Revision

quiz

Worksheet

•

7th Grade

2021-2022 Final Review

161 questions

2021-2022 Final Review

quiz

Worksheet

•

7th Grade

waves

166 questions

waves

quiz

Worksheet

•

5th - 11th Grade

Quiz #4 - Astronomy

159 questions

Quiz #4 - Astronomy

quiz

Worksheet

•

8th Grade

Unit 4 Review: Newton's Laws, Simple Machines, & Forces

161 questions

Unit 4 Review: Newton's Laws, Simple Machines, & Forces

quiz

Worksheet

•

8th - 9th Grade