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WorksheetsScience Midterm
Total questions: 114
Worksheet time: 57mins
A scientist finds a mystery object. The scientists wants to know if the object is living or not. Which of the following is shows one of the 7 characteristics of life that the scientists should use?
The mystery object can breathe oxygen.
The mystery object responds to outside stimuli.
The mystery object moves.
The mystery object is visible.
A scientist is observing a freshwater sample under a light microscope. The sample contains an organism made of one cell that has small, hairlike projections. Which type of cell is the scientist most likely observing?
plant
protist
fungus
animal
Sally goes swimming in a freshwater lake and notices a green film on top of the water. Which chlorophyll-containing protist colony is she most likely seeing?
volvox
amoeba
euglena
paramecium
Alice looks at a protist specimen through a microscope and notices the presence of pseudopods. Which protist is Alice most likely observing?
amoeba
euglena
paramecium
volvox
Which is a heterotrophic protist?
euglena, because it has chloroplasts
volvox, because it has cilia
amoeba, because it engulfs food
volvox, because it has an eyespot
Which similarity exists between cilia and flagella?
They both help organisms move.
They both help organisms make food.
They are both found on an amoeba.
They are both found on a paramecium.
Which structures are found in both a euglena and a volvox?
They both have cilia.
They both have eyespots.
They both have oral grooves.
They both have pseudopodia.
Which characteristic do euglena, paramecium, volvox, and amoeba all have in common?
they are unicellular
They live in colonies.
They move using flagella.
They create food through photosynthesis.
How does a paramecium obtain energy?
through photosynthesis
by eating other organisms
through parasitic relationships
by using flagella to gather food
Amy observes a protist in science class and records these notes:
-uses flagellum for mobility
-can be both an autotroph and a heterotroph
-reproduces with binary fission
Which organism is she observing?
volvox
euglena
amoeba
paramecium
Which two protists use photosynthesis to make their own food?
paramecium and amoeba
volvox and paramecium
amoeba and euglena
euglena and volvox
Which statement best compares how a paramecium and an amoeba obtain food?
Both the paramecium and amoeba obtain food using pseudopods.
Both the paramecium and amoeba obtain food through an oral groove.
The paramecium obtains food through an oral groove, while the amoeba uses pseudopods.
The paramecium obtains food using pseudopods, while the amoeba uses an oral groove.
Which of the following characteristics of living things best explains why your legs and arms get longer and stronger as you get older?
living things use energy
living things reproduce
living organisms respond to their environment
living things grow and develop
An example of a unicellular organism is ______________.
deer
onion
bacteria
humans
One difference between prokaryotes and eukaryotes is that
prokaryotes have no nuclear membrane
prokaryotes are multicellular
prokaryotes have a nucleus
eukaryotes can only be multicellular
Studying a picture of a cell taken with an electron microscope, you find that the cell has a nucleus and complex parts to the cell that have a membrane, you conclude that the cell is probably from a (an)
prokaryote
eukaryote
bacteria
non-living thing
Which of the following is NOT part of the cell theory?
All organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
In order to be considered living, organisms have to be multicellular
All cells come from pre-exisiting cells.
Which structures are common to both plant and animal cells?
vacuole, chloroplast, nucleus
cell membrane, nucleus, mitochondrion
nucleus, cell wall, cell membrane
mitochondrion, vacuole, cell wall
Which of the following allows materials to enter and leave a cell?
cell wall
mitochondria
vacuole
cell membrane
An athlete is running a race. The athlete’s body needs energy. Which organelle(s) in the athlete’s cells supply the energy for cellular functions?
golgi apparatus
mitochondria
ribosomes
nucleus
The cells of a plant help the plant maintain its life functions. What part of a plant cell has the function of producing sugar in the presence of sunlight which in turn gives the plant its green color?
chloroplast
cytoplasm
mitochondria
nucleus
What is the main function of the cell wall in a plant cell?
to protect against disease
to give structural support
to contain the parts of the cell
to help with cell division
Many plant cells have chloroplasts. Which process occurs in chloroplasts?
food storage
respiration
reproduction
photosynthesis
Mitochondria are cell organelles that play a large role in energy processes within the body. Which cells are MOST likely to have a greater amount of mitochondria?
skin
bone
blood
muscle
Tina observed a cell under a microscope. She concluded that it was a plant cell instead of an animal cell. Which structure helped her come to this conclusion?
She saw a vacuole, which animal cells lack.
She saw a nucleus, which animal cells lack.
She saw a chloroplast, which animal cells lack.
She saw a cell membrane, which animal cells lack.
How does the cell wall of a plant cell compare to the cell membrane of an animal cell?
The cell wall controls what enters and leaves the plant cell; the cell membrane provides mostly structure and support.
The cell wall converts sunlight into sugars; the cell membrane controls energy production in the cell.
The cell wall provides structure and support; the cell membrane controls the substances that enter and leave the cell.
The cell wall provides structure and support; the cell membrane is surrounded by a structure that contains genetic information.
Which of the following describes the major difference between eukaryotic and prokaryotic cells?
Prokaryotic cells have vacuoles and Eukaryotic cells do not.
Eukaryotic cells have DNA and and Prokaryotic cells do not.
Prokaryotic cells have a nucleus and Eukaryotic cells do not.
Eukaryotic cells have a nucleus and Prokaryotic cells do not
Why is a vacuole much larger in a plant cell than in an animal cell?
Water is essential for a plant to obtain energy through photosynthesis.
A vacuole is not necessary for an animal cell.
The plant cell needs a larger vacuole to make proteins.
A plant cell doesn't have as many organelles as an animal cell so it needs to take up space.
An atmospheric layer of a specific gas provides shielding from harmful ultraviolet light from the Sun, allowing life to thrive on Earth. What gas makes up this layer?
H2O
O3
CO2
N2
Which BEST explains why air temperatures near mountaintops are often much colder than air temperatures near sea level?
Large amounts of snowfall decrease the temperature.
Air near mountaintops is less dense.
Strong winds near mountaintops decrease temperatures.
The lack of vegetation at sea level allows the ground to absorb more heat.
The temperature of the stratosphere increases with altitude because of the presence of
nitrogen
water vapor.
ozone
carbon monoxide.
The BEST description of the troposphere is the layer of the atmosphere with the
most ozone.
greatest density.
highest altitude.
coldest temperature.
Which of these statements BEST describes temperature as elevation in the atmosphere increases?
Temperature remains constant with elevation in the thermosphere.
Temperature remains constant with elevation in the mesosphere.
Temperature generally decreases with elevation in the stratosphere.
Temperature generally decreases with elevation in the troposphere.
Some jet airplanes fly in a layer of the atmosphere where temperature generally increases with altitude. What is this layer of the atmosphere?
mesosphere
stratosphere
thermosphere
troposphere
On Mount Everest the temperature decreases as the altitude increases. The summit of this mountain is in which atmospheric layer?
mesosphere
stratosphere
thermosphere
troposphere
Which layer of the atmosphere contains the greatest amount of water vapor?
mesosphere
troposphere
stratosphere
thermosphere
How is the stratosphere different from the troposphere?
The clouds in the stratosphere produce more rain.
The air in the stratosphere has a greater density.
The composition of the stratosphere lacks ozone.
The temperature of the stratosphere warms at higher altitude.
what percent of the atmosphere is made up of nitrogen
78
21
1
25
In which layer of the atmosphere does MOST of Earth’s weather occur?
the exosphere, which is the outermost layer
the troposphere, which is the lowest layer
the thermosphere, which has the highest temperature
the stratosphere, which contains a sub-layer of ozone
Which of these gases, on average, has the lowest volume in the atmosphere of Earth?
oxygen
nitrogen
water vapor
Carbon dioxide
When a plane flies, it travels through air that contains gases, liquids, and solids. This area is BEST described as the
atmosphere
lithosphere
biosphere
hydrosphere
Why does the troposphere experience the greatest amount of atmospheric pressure compared to the other atmospheric layers?
It produces the ozone layer.
It has the highest temperatures.
It contains a high concentration of gas particles.
It is the region in which weather occurs.
Which of the following describes the layers of the atmosphere in order as you increase altitude?
Stratosphere, Troposphere, Mesosphere, Thermosphere, Exosphere
Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere
Mesosphere, Thermosphere, Troposphere, Stratosphere, Exosphere
Thermosphere, Stratosphere, Mesosphere, Troposphere, Exosphere
Which of the following describes how the mesosphere protects life on Earth?
The mesosphere blocks radiation from the sun
The mesosphere is where all weather takes place
The mesosphere protects the Earth from meteors
The mesosphere is where the auroras can be seen
Which of the following describes what may happen if the Earth did not have an atmosphere?
The Earth would experience slight changes at the time the atmosphere disappears, but would soon recover and the environment would be the same
The Earth would experience an increase in plant growth in order to support life
Temperatures would increase and oceans would evaporate
Temperatures would change drastically, oceans would evaporate and organisms would not be able to live
As altitude increase, air pressure ____________________.
increases
stays the same
decrease
doubles
When condensation forms on your windows of your house in the morning this is due to the process by which water vapor in the atmosphere cools and becomes a liquid. What is this process called?
evaporation
condensation
precipitation
transpiration
Which statement explains what will most likely happen in an area where temperatures increase?
Earthquake intensity will decrease.
Mountain formation will decrease.
Rock weathering will increase.
Evaporation will increase.
What interacts the most in the water cycle?
sun and ocean
sun and rivers
wind and rain
precipitaion and groundwater
Some jet airplanes fly in a layer of the atmosphere where temperatures generally increase with altitude. What is this layer of the atmosphere?
mesosphere
stratosphere
thermosphere
troposphere
Which layer of the atmosphere contains the ozone layer?
stratosphere
mesopshere
thermosphere
troposphere
Of the following layers of the atmosphere, where is density of air molecules the most abundant?
exosphere
stratosphere
mesosphere
troposphere
Ozone is a _________________ in the stratosphere and a ____________________ in the troposphere.
protectant, pollutant
liquid, solid
pollutant, protectant
gas, liquid
Which of the following is a greenhouse gas and is increased by human activity?
water vapor
carbon dioxide
nitrogen
oxygen
Which of the following shows an impact of chloroflurocarbons (CFC)?
increase of oxygen in the air
decrease in the amount of greenhouse gases
cleaner air in the troposphere
depleting of the ozone layer
An increase in carbon dioxide in the atmosphere is associated with an increase in global temperature. Which property of carbon dioxide is responsible for this temperature increase?
Carbon dioxide creates more sunlight than other atmospheric gases.
Carbon dioxide efficiently turns sunlight into heat.
Carbon dioxide traps and keeps heat in the atmosphere from escaping into space.
Carbon dioxide stores solar energy in chemical bonds.
In what way does the mesosphere protect us?
burning up meteors
satellites orbit
weather balloons
weather
The ionosphere is a unique part of the thermosphere and the lower mesosphere. Which of the following is possible due to the ionosphere?
blocks UV radiation
creates the coldest layer
contains an increase in greenhouse gases
aurora borealis (northern lights) and makes radio communication possible
The greenhouse effect is a process by which atmospheric gases, including CO2, help warm the atmosphere and surface of Earth. Most scientists think the greenhouse effect is increasing due to human activities. Which of these human activities has caused the greatest increase in concentrations of greenhouse gases?
planting trees
recycling aluminum
burning fossil fuels
using nuclear power
Which process of heat transfer allows energy to move from the sun to the surface of the Earth?
radiation
conduction
convection
photosynthesis
Which instrument is used to measure air pressure?
anemometer
thermometer
barometer
satellite
If there is an increase in condensation in the air, which would be the predicted outcome?
auroras
runoff
decrease in UV radiation
cloud formation
Which type of weather could you predict if you saw cirrus clouds in the sky?
stormy
overcast sky
calm,fair weather
steady precipitation
If we did not have the greenhouse effect which of the following would happen?
The Earth would increase dramatically in temperature.
Hurricanes would occur more often.
The Earth would not be able to sustain life.
There would be an increase in plant life.
Which type of weather prediction could you make if you saw cumulonimbus clouds in the sky?
clear, blue skies
thunderstorms
steady precipitation all day
overcast sky
How would barometric pressure change as you increase altitude from the troposphere to the exosphere?
The barometric pressure would drastically increase.
The barometric pressure would drastically decrease.
Barometric pressure would remain the same.
Barometric pressure would steadily increase until you reached the exosphere where it will decrease
In the atmosphere, heat transfers as a constant cycle between conduction, convection, and radiation. Which of these three processes describes how the ground heats the air?
convection
conduction
radiation
photosynthesis
High-altitude cirrus clouds are primarily formed from which substance?
carbon dioxide gas
solid ice crystals
nitrogen compounds
ozone gas
A mass of air under high pressure travels southward from the polar area toward the equator. How will Earth’s motion MOST likely affect this air mass?
The air mass will experience increased pressure.
The air mass will mix with a low-pressure system.
The air mass will reverse direction and travel back to the pole.
The air mass will appear to turn and move in an easterly direction.
Scientists monitor ozone in the upper atmosphere and at ground level. Changing concentrations of each can cause health problems for people. Which set of changes would cause the MOST health concerns?
an increase in both atmospheric and ground level ozone
a decrease in both atmospheric and ground level ozone
an increase in atmospheric ozone, and a decrease in ground level ozone
a decrease in atmospheric ozone, and an increase in ground level ozone
Doppler radar shows a vertical rotating column of air with high wind speeds. Which is most likely occurring?
the formation of a hurricane
the formation of a tornado
approaching warm front
approaching snowstorm
Which of these BEST explains the cause of convection currents in Earth’s atmosphere?
Heat from Earth’s core heats the land only at the equator.
Glaciers moving away from the poles cool Earth unevenly.
Sunlight is more concentrated in some places on Earth than others.
The light and heat reflected from the Moon varies as the Moon changes phases.
When air is heated, it will MOST likely
expand and fall.
expand and rise.
condense and fall.
condense and rise.
Which is responsible for creating wind?
wave action
solar energy
trees blowing
gravitational force
Which best describes high-pressure systems in North America?
They change quickly.
They bring fair weather.
The air in them is cold and dense.
The air in them moves counterclockwise.
Which best describes a type of pollution that includes dirt, dust, pollen, and other harmful droplets?
dust
gas
particulate
radiation
The Coriolis effect deflects wind direction. How does this process impact ocean surface currents?
The wind deflects the currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
The wind deflects the currents to the left in the Northern Hemisphere and to the right in the Southern Hemisphere.
The wind deflects the currents to the left in both hemispheres.
The wind deflects the currents to the right in both hemispheres.
What is the relative humidity of saturated air?
25
50
75
100
Over which of the following components of smog do humans have the LEAST control?
water vapor
sulfur dioxide
ammonia
nitrogen oxides
When visiting the beach, Felicity observed that a breeze blew in from the ocean during the day and out toward the ocean at night. Which factor is MOST responsible for the direction of land and sea breezes in coastal regions?
the revolution of Earth around the Sun
the uneven heating between the land and water
the gravitational pull of Earth on the atmosphere
the daily rise and fall of tides in a regular pattern
Which best describes a system that brings precipitation?
low-pressure system
high-pressure system
positive-pressure system
negative-pressure system
Which of the following are narrow belts of strong winds found in the upper troposphere?
doldrums
westerlies
trade winds
jet streams
In the 1970s scientists began investigating the chemical reactions that caused the destruction of ozone in the upper atmosphere. Which statement BEST describes a direct result of their research on society and on the environment?
Global positioning technology was invented.
Research on a reusable space shuttle was initiated.
Alternatives to ozone-depleting aerosols were invented.
Plastic bags were invented as an alternative to paper bags.
Which direction do winds blow in jet streams on Earth?
from east to west
from west to east
from south to north
from north to south
Which best describes an air mass that forms over the ocean near the equator?
maritime polar
continental polar
maritime tropical
continental tropical
Why are sea breezes at the coast of North Carolina stronger in the summer than in the winter?
The axis of Earth is greater in warmer temperatures.
The rotation of Earth is greater in warmer temperatures.
The temperature differences are greater between the land and ocean in the summer.
The temperature differences are smaller between the land and ocean in the summer.
What direction do hurricanes rotate in the Northern Hemisphere?
counterclockwise
clockwise
no rotation
rotates toward the poles
Which two protists contain chloroplasts and eyespots?
amoeba and paramecium
paramecium and volvox
volvox and euglena
euglena and amoeba
What do an amoeba and a human have in common?
Both are unicellular organisms
Both are multicellular organisms
Both organisms are composed of prokaryotic cells
Both organisms are composed of eukaryotic cells
Oscar and Andre used a microscope to observe a sample of pond water and drew an example of each type of organism they saw. Then they compared their drawings. They discovered that their drawings of a euglena and a paramecium were alike, but their amoeba drawings had very different shapes. Which of the following explains why Oscar’s amoeba may have looked different from Andre's?
Oscar's amoeba may have been shape shifting in order to move and eat using pseudopods
Oscar's amoeba may have a pellicle which makes the amoeba look more rigid
Oscar's amoeba likely had chloroplasts and a cell wall while Andre's did not
Oscar's amoeba had flagella and Andre's had cilia
An animal cell does not have enough energy production in order to function properly. Which organelle is most likely malfunctioning?
The mitochondria
The vacuole
The chloroplasts
The cell membrane
Which is true about reproduction for both an amoeba and a Paramecium?
Both can go through binary fission.
Neither can go through binary fission.
An amoeba can go through binary fission, but a Paramecium cannot.
A Paramecium can go through binary fission, but an amoeba cannot.
Which explains why the volvox organism is sometimes considered unicellular AND multicellular?
The volvox is considered uni and multicellular because scientists have not been able to study the organism further for full understanding
The volvox is only considered unicellular because each organism can exist on its own independently
The volvox organism is dependent upon the colony for survival because only some volvox have chloroplasts for photosynthesis
Each volvox organism is dependent upon the colony for survival because the volvox with sensitive sunlights move towards the front while the other volvox organisms move the colony using their flagellums
Which difference best describes the DNA containing structures in prokaryotic and eukaryotic cells?
Both cells have DNA in the cell, but neither of them have a nucleus to contain the DNA
Both cells have nuclei that contain DNA, with different DNA structures inside
Eukaryotes have a true nucleus that surrounds its DNA, where prokaryotes do not.
Prokaryotes have a true nucleus that surrounds its DNA, where eukaryotes do not.
What is the biggest difference between a protist that is an autotroph and a protist that is a heterotroph?
how they move
how they obtain energy
how they reproduce
how they stay away from predators
Why are protists sometimes called "misfits"?
they don't behave in their environment
protists belong in all kingdoms and therefore are included in all kingdoms
they are considered prokaryotic
protists do not fit into any other kingdom
How are protists classified?
by the way they eat
by the way they reproduce
by the way they move
they are prokaryotic
Which body system moves oxygen around the body?
circulatory
digestive
respiratory
skeletal
What is formed from groups of specialized cells in the human body?
organ
organism
tissue
organ system
Which structure is missing from the hierarchical organization of organisms?
_________ → tissues → organs → systems → organisms
cells
atoms
blood
molecules
Which is a group of organs, such as the brain and spinal cord, working together to perform a specific function?
cells
tissue
organism
organ system
Which term is described as body systems working together to regulate the internal environment?
bioanalysis
circulation
homeostasis
symbiosis
Which is the simplest level of organization?
lung tissue
lung
respiratory system
lung cell
Which two organ systems best work together to take in oxygen and dispose of carbon dioxide?
digestive and muscular
circulatory and digestive
digestive and respiratory
circulatory and respiratory
Which choice has the most complex level of organization?
lung
lung cell
lung tissue
respiratory system
Which is an organ?
neuron
tendon
nucleus
stomach
Which statement is true of organ systems in the human body?
Organ systems contain the same number of organs.
Organ systems must work together to keep the body functioning.
Organ systems do not need other systems to keep the body functioning.
Organ systems do not have specialized organs because all organs perform the same functions.
Which byproduct is produced during respiration and the breaking down of food for energy?
carbon
glucose
carbon dioxide
oxygen
How do cells differ from tissues?
Cells have certain jobs in an organism, while all tissues have the same job.
Tissues have certain jobs in an organism, while cells lack specific tasks.
Cells are the most basic unit of organization in an organism, while tissues are composed of specialized cells.
Tissues are the most basic unit of organization in an organism, while cells are composed of specialized tissues.
How are the stomach and the lungs structurally similar?
They are both made up of tissues.
They are both made up of organs.
They are both made up of single-celled organisms.
They are both made up of multicellular organisms.
Which statement best explains the relationship between the respiratory and circulatory systems in the human body?
The circulatory system takes blood to the respiratory system, where it is filtered and wastes are removed from the body.
Energy molecules are moved to the circulatory system where they are used to create sperm or egg cells for respiration.
Glucose is removed from food molecules by the respiratory system and transferred throughout the body by the circulatory system.
Oxygen is taken into the body and transferred to the blood by the respiratory system, and the circulatory system moves oxygen around the body, taking it to all cells.
Which sequence of hierarchical organization is most likely in a multicellular organism, from largest to smallest?
organ, organ system, tissue, cell, organism
organ system, organ, tissue, organism, cell
organ, tissue, cell, organism, organ system
organism, organ system, organ, tissue, cell
Which of the following would be an example of how the body maintains homeostasis?
You get cut and it keeps bleeding.
Making you tired when you are over worked.
Increases your heart rate.
You sweat when you are overheated.
It is cold outside and your body starts to shiver. Your face and ears turn red. This is an example of which of the following?
cellular respiration
homeostasis
muscle fatigue
mitosis
