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Students will need a calculator and a periodic table!. EOG Review. Science 8 th grade. An atom is composed of protons, electrons, and neutrons. What is the electric charge on the proton?. 0 -1 +1 +2. The organelle that is responsible for making glucose is the ____. Mitochondria

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an atom is composed of protons electrons and neutrons what is the electric charge on the proton
An atom is composed of protons, electrons, and neutrons. What is the electric charge on the proton?
  • 0
  • -1
  • +1
  • +2
the organelle that is responsible for making glucose is the
The organelle that is responsible for making glucose is the ____
  • Mitochondria
  • Chloroplast
  • Ribosome
  • Lysosome
slide4

A rock has a mass of 230 grams. It is placed into a graduated cylinder that originally has 50mL of water in it. The volume now reads 63mL. What is the object’s density?

  • 2990 g/mL
  • 4.60 g/mL
  • 3.65 g/mL
  • 17.7 g/mL
the cellular process that breaks down glucose to produce energy is
The cellular process that breaks down glucose to produce energy is______
  • Respiration
  • Photosynthesis
  • Mitochondria
  • Chloroplast
slide6

If table salt (NaCl) is the product of the reaction between pure Sodium (Na) and Chlorine gas (Cl2), which balanced chemical formula represents this reaction?

  • 2NaCl  2Na + Cl2
  • NaCl  Na + Cl2
  • 2Na + Cl2  2NaCl
  • Na + Cl2  NaCl
which of the following is not one of the statements of the cell theory
Which of the following is not one of the statements of the Cell Theory?
  • All living things are made up of one or more cells.
  • Cells perform basic life functions.
  • Cells come from other living cells.
  • All cells are capable of making glucose.
the atomic number of carbon 13 2 is 6 how many electrons does this atom have
The atomic number of Carbon-13 (+2) is 6. How many electrons does this atom have?
  • 6
  • 8
  • 7
  • 4
most cells obtain water through which process
Most cells obtain water through which process?
  • Diffusion
  • Osmosis
  • Exocytosis
  • Active transport
a substance that is made up of two or more elements is called
A substance that is made up of two or more elements is called ____
  • An element
  • A compound
  • A mixture
  • A solution
which of the following is produced as a result of respiration
Which of the following is produced as a result of respiration?
  • Glucose
  • Oxygen
  • Energy
  • Water
slide12

A wooden block has a density of 2.4 g/cm3. If the block has a length of 2cm, a height of 1.1cm and a width of 4cm, what is the wooden block’s mass?

  • 21.12 g
  • 19.20 g
  • 0.27 g
  • 3.67 g
slide14

Hillary goes to the doctor for a routine check-up and is surprised to find out that she has the varicella virus in her blood. Because she has not exhibited any symptoms of this disease, Hillary is considered to be ____

  • A vector
  • A carrier
  • Quarantined
  • Not contagious
animal cells and plant cells differ because animal cells
Animal cells and plant cells differ because animal cells ____
  • Have mitochondria, and plant cells do not.
  • Have chloroplasts, and plant cells do not.
  • Have lysosomes, and plant cells do not.
  • Have cell walls, and plant cells do not.
which of the following organelles is responsible for providing the cell with glucose
Which of the following organelles is responsible for providing the cell with glucose?
  • Mitochondria
  • Photosynthesis
  • Chloroplast
  • Respiration
slide17
If an irregular shaped object has a volume of 22cm3 and a mass of 18.6 g, what is the object’s density?
  • 0.845 g/cm3
  • 1.18 g/cm3
  • 409.2 g/cm3
  • 3.40 g/cm3
slide19

Mary noticed that plants grew taller in her sunny front yard than in her shady backyard. She decides to perform an experiment that tests the amount of light and its effect on plant growth. Which of the following would be the best hypothesis for her experiment?

  • If you increase the amount of light that a plant is exposed to, then the plant will grow less.
  • If you decrease the amount of light that a plant is exposed to, then the plant will grow more.
  • If you increase the amount of light that a plant is exposed to, then the plant will grow more.
  • If you increase the amount of water that a plant is given, then the plant will grow more.
tectonic plates make up which of the following layers of the earth
Tectonic plates make up which of the following layers of the Earth?
  • The crust only
  • The mantle only
  • The crust and the top portion of the mantle
  • The top portion of the mantle and all of the core
where would a plant cell store any excess glucose or water
Where would a plant cell store any excess glucose or water?
  • The golgi apparatus
  • The cytoplasm
  • The central vacuole
  • The cell membrane
which part of the experiment does the person performing the experiment have control over
Which part of the experiment does the person performing the experiment have control over?
  • The independent variable
  • The dependent variable
  • The results
  • The conclusion
which of the following statements about viruses is false
Which of the following statements about viruses is false?
  • Viruses are smaller than bacteria.
  • Viruses can change their DNA.
  • Viruses can reproduce on their own.
  • Viruses do not affect living things.
the atomic number of an atom is the number of
The atomic number of an atom is the number of ____
  • Protons
  • Neutrons
  • Protons and neutrons combined
  • Electrons and neutrons combined
an ion is an atom
An ion is an atom ____
  • That has an unequal number of protons and electrons.
  • That has an unequal number of protons and neutrons.
  • That has the same number of protons and neutrons.
  • That has the same number of protons and electrons.
which of the following is true regarding photosynthesis and respiration
Which of the following is true regarding photosynthesis and respiration?
  • Photosynthesis occurs in the mitochondria; respiration occurs in the chloroplasts.
  • Photosynthesis breaks down glucose; respiration makes glucose.
  • Photosynthesis occurs in the chloroplasts; respiration occurs in the mitochondria.
  • All cells can undergo both photosynthesis and respiration.
a producer is an organism that can
A producer is an organism that can ____
  • Eat other organisms.
  • Make glucose for its cells.
  • Reproduce.
  • Feeds off of dead or decaying matter.
which of the following is produced as a result of photosynthesis
Which of the following is produced as a result of photosynthesis?
  • Carbon dioxide
  • Water
  • Oxygen
  • Heat
the process that causes tectonic plates movement is
The process that causes tectonic plates movement is ____
  • Conduction
  • Convection
  • Radiation
  • Continental drift
the main reason why alfred wegener s hypothesis of continental drift was not accepted was because
The main reason why Alfred Wegener’s hypothesis of continental drift was not accepted was because ___
  • He couldn’t show how the continents were once joined together.
  • He didn’t have any proof that the continents were joined together.
  • He couldn’t explain how the continents moved apart.
  • He couldn’t explain how fossils formed.
particles floating in water that may make the water cloudy is known as
Particles floating in water that may make the water cloudy is known as ___
  • Concentration
  • Turbidity
  • Cohesion
  • Adhesion
sea urchins are classified as animals because they cannot
Sea urchins are classified as animals because they cannot ____
  • Make energy for their cells.
  • Make glucose for their cells.
  • Move from one location to another.
  • Undergo cellular respiration.
which of the following is a change in physical composition
Which of the following is a change in physical composition?
  • A brick being ground up into fine dust.
  • A purple substance forming when iodine is added to cornstarch.
  • Vinegar bubbling when baking soda is added.
  • An iron nail rusting.
which of the following is a change in chemical composition
Which of the following is a change in chemical composition?
  • An aluminum cube is rolled into a flat sheet.
  • Liquid water freezing to form solid ice.
  • Solid butter melting on the stove.
  • A white precipitate forming as a result of the combination of two liquids.
in the chemical formula h 2 so 4 what does the subscript 4 represent
In the chemical formula H2SO4, what does the subscript 4 represent?
  • The number of hydrogen atoms in sulfuric acid.
  • The number of sulfur and oxygen atoms in sulfuric acid.
  • The number of oxygen atoms in sulfuric acid.
  • The number of hydrogen and oxygen atoms in sulfuric acid.
slide38

Hydrogen peroxide (H2O2), if left unopened, will eventually form water (H2O) and oxygen gas (O2). What is the balanced chemical equation for this reaction?

  • H2O2 H2O + O2
  • H2O + O2  H2O2
  • 2H2O2  2H2O +O2
  • 2H2O + O2  2H2O2
slide39

Hydrogen peroxide (H2O2), if left unopened, will eventually form water (H2O) and oxygen gas (O2). What type of chemical reaction is this?

  • Combustion reaction
  • Acid-base neutralization reaction
  • Decomposition reaction
  • Synthesis reaction
which of the following is not one of the three processes of the hydrologic cycle
Which of the following is not one of the three processes of the hydrologic cycle?
  • Condensation
  • Evaporation
  • Collection
  • Precipitation
where is most freshwater located on earth
Where is most freshwater located on Earth?
  • Polar ice caps
  • Groundwater
  • Rivers
  • Lakes
an atom is composed of protons neutrons and electrons what is the electric charge on an electron
An atom is composed of protons, neutrons, and electrons. What is the electric charge on an electron?
  • 0
  • +1
  • -1
  • +2
the following organelles are found in all cells except
The following organelles are found in ALL cells except ____
  • Cell membrane
  • Mitochondria
  • Cytoplasm
  • Nucleus
which of the following statements is true regarding prokaryotic cells and eukaryotic cells
Which of the following statements is true regarding prokaryotic cells and eukaryotic cells?
  • Prokaryotic cells have a nucleus; eukaryotic cells do not have a nucleus.
  • Prokaryotic cells are able to make glucose; eukaryotic cells are not.
  • Prokaryotic cells do not have a nucleus; eukaryotic cells have a nucleus.
  • Prokaryotic cells are not able to make glucose; eukaryotic cells can.
the process of cells making glucose is known as
The process of cells making glucose is known as__
  • Respiration
  • Photosynthesis
  • Mitochondria
  • Chloroplasts
animal cells and plant cells differ because animal cells1
Animal cells and plant cells differ because animal cells ___
  • Have mitochondria, and plant cells do not.
  • Have chloroplasts, and plant cells do not.
  • Have lysosomes, and plant cells do not.
  • Have cell walls, and plant cells do not.
which of the following is a change in physical composition1
Which of the following is a change in physical composition?
  • Water freezing in the freezer.
  • Wood burning in a fireplace.
  • A nail rusting.
  • Garbage decomposing in a landfill.
which of the following statements is false regarding viruses
Which of the following statements is false regarding viruses?
  • Viruses have DNA.
  • Viruses are capable of reproducing.
  • Viruses have cells.
  • Viruses come from other viruses.
which of the following is not one of the main categories of elements on the periodic table
Which of the following is not one of the main categories of elements on the periodic table?
  • Nonmetals
  • Transition metals
  • Metals
  • Metalloids
the elements in the periodic table are organized by
The elements in the periodic table are organized by___
  • Their atomic numbers.
  • Their names.
  • Their atomic mass numbers.
  • Their activity levels.
slide52

A metal ball has a mass of 35g. To determine the volume, a graduated cylinder was filled up with 25 mL of water and the metal ball was placed inside. If the volume increased by 7mL, what is the object’s density?

  • 245 g/mL
  • 1.4 g/mL
  • 5.0 g/mL
  • 1.09 g/mL
which of the following statements is true regarding cellular respiration
Which of the following statements is true regarding cellular respiration?
  • Respiration occurs in the chloroplasts of cells.
  • Respiration produces glucose for the cells to use.
  • Respiration breaks down glucose to get energy.
  • Respiration uses carbon dioxide.
in a eukaryotic cell dna is kept in
In a eukaryotic cell, DNA is kept in _____
  • The cell membrane.
  • The nucleus.
  • The cytoplasm.
  • The vacuole.
slide58
If the bacteria cells are doubling every hour, approximately how many bacteria cells will there be at 10:00?
  • 47,000
  • 78,000
  • 54,000
  • 88,000
what is the best explanation for the rapid bacteria growth
What is the best explanation for the rapid bacteria growth?
  • The bacteria cells were infected with a virus causing them to reproduce rapidly.
  • Bacteria cells reproduce rapidly through binary fission.
  • Bacteria cells reproduce quickly through mitosis and cytokinesis.
  • Bacteria cells divide every 3 hours to produce new cells.
what is the best way to prevent bacterial infection in a cut
What is the best way to prevent bacterial infection in a cut?
  • Vaccinations from the doctor.
  • Stay home until the cut heals so you are not exposed to bacteria.
  • Wash the cut with soap and water.
  • Do not cover the wound, leave it open to the air.
looking at the column that says maximum amount allowed what does ppm represent
Looking at the column that says maximum amount allowed, what does ppm represent?
  • Parts per molecule
  • Parts per million
  • Portions per minute
  • Portions per million
which two contaminants can cause problems for kidneys
Which two contaminants can cause problems for kidneys?
  • Mercury and Copper
  • Nitrates and Copper
  • Cyanide and Mercury
  • Nitrates and Cyanide
slide63

A large number of people from the town Andersonville have developed thyroid problems. This town is known for its numerous steel factories. What might investigators conclude after some research?

  • There is too much copper in the water.
  • There is too much cyanide in the water.
  • There is not enough mercury in the water.
  • There are a lot of sick people in this town.
considering the maximum amount allowed which chemical is the most dangerous
Considering the maximum amount allowed, which chemical is the most dangerous?
  • Copper
  • Mercury
  • Cyanide
  • Nitrates
looking at the data table which of the following statements is not true
Looking at the data table, which of the following statements is NOT true?
  • Runoff from fertilizer can enter water and cause infants to become sick.
  • Thyroid problems can be contributed to cyanide poisoning.
  • Kidney damage can be caused by multiple contaminants.
  • Only factories and farms can cause water contamination.
which describes the hydrosphere
Which describes the hydrosphere?
  • Most of it contains salt.
  • It is made of only freshwater.
  • All of it is located above ground.
  • It is formed by a climate change.
slide67
Which condition in the ocean is most responsible for an increase in the fish population near the surface?
  • Buoyancy
  • Density
  • Salinity
  • Upwelling
which pair of organisms represents a connection between aquatic and terrestrial food webs
Which pair of organisms represents a connection between aquatic and terrestrial food webs?
  • Whales and plankton
  • Seagulls and oysters
  • Spiders and mosquitoes
  • Humans and coral
which tool is used to determine precipitation amounts
Which tool is used to determine precipitation amounts?
  • Balance scale
  • Hygrometer
  • Rain gauge
  • Thermometer
which is evidence that elements can combine to form new compounds
Which is evidence that elements can combine to form new compounds?
  • Melting a solid
  • Freezing a liquid
  • Moving a piece of metal with a magnet
  • Pouring two liquids together to create a solid
which property of metals allows them to be used to make coins that have the same thickness
Which property of metals allows them to be used to make coins that have the same thickness?
  • Electrical conductivity
  • Density
  • Malleability
  • Specific heat
which best describes why metals are used for making pots and pans that are used for cooking
Which best describes why metals are used for making pots and pans that are used for cooking?
  • Metals have low specific heats and high melting points.
  • Metals have high specific heats and low melting points.
  • Metals have low specific heats and low melting points.
  • Metals have high specific heats and high melting points.
which best describes the physical change of an aluminum soda can after it is crushed
Which best describes the physical change of an aluminum soda can after it is crushed?
  • There is a change in the mass of the can.
  • There is a change in the weight of the can.
  • There is a change in the volume of the can.
  • There is a change in the specific heat of the can.
slide74
A chemical reaction produces two new substances, and each product has a mass of 25 grams. What was the total mass of the reactants?
  • 25 grams
  • 50 grams
  • 75 grams
  • 100 grams
slide75
Which factor best explains why some people will react differently than others to the same dose of an antibiotic?
  • High potency
  • Low concentration
  • Individual exposure
  • Individual susceptibility
if a farmer decides to have a pesticide free farm which is most likely the result of this choice
If a farmer decides to have a pesticide-free farm, which is most likely the result of this choice?
  • The famer’s crops will yield more than if pesticides had been applied.
  • The farmer’s crops will yield the same amount whether or not pesticides have been applied.
  • Insects may eat a larger percentage of the farmer’s crops, causing a lower harvest than if pesticides had been applied.
  • Insects may eat a lower percentage of the farmer’s crops, causing a higher harvest than if pesticides had been applied.
which is the best evidence that two continents were once connected
Which is the best evidence that two continents were once connected?
  • They have similar types of rocks and fossils.
  • They are in the same stage of succession.
  • They exist along the same line of latitude.
  • They have the same climate.
slide78
What does a scientist most likely consider when studying the relative ages of rock layers in a canyon wall?
  • Chemical weathering
  • Current climate
  • Amount of daily rainfall
  • Law of Superposition
which can most likely be concluded about the top layer of rock seen in an undisturbed cliff wall
Which can most likely be concluded about the top layer of rock seen in an undisturbed cliff wall?
  • The top layer is older than layers located farther down the cliff.
  • The top layer is younger than layers located farther down the cliff.
  • The top layer contains more fossils than layers located farther down the cliff.
  • The top layer contains fewer fossils than layers located farther down the cliff.
based on the law of superposition what can be concluded about fossils
Based on the Law of Superposition, what can be concluded about fossils?
  • Fossils give clues about past climate patterns.
  • Fossils form from the hard parts of organisms.
  • The oldest fossils are found in the lowest rock layers.
  • The most recent fossils were advanced organisms.
slide81
Which best explains why fossils of the same species of a reptile were discovered in South America and in western Africa?
  • The reptiles evolved in both South America and Africa.
  • The continents of South America and Africa were once joined.
  • Land bridges connected the continents of South America and Africa.
  • The reptiles could swim the distance between South America and Africa.
which process best explains how mountain ranges are worn down over time
Which process best explains how mountain ranges are worn down over time?
  • Asteroid impacts
  • Volcanic eruptions
  • Mechanical and chemical weathering
  • Continental drift and seafloor spreading
which organelle stores genetic information
Which organelle stores genetic information?
  • Flagellum
  • Nucleus
  • Mitochondrion
  • Vacuole
what is the energy source that an animal cell needs to carry out life processes
What is the energy source that an animal cell needs to carry out life processes?
  • Water stored in vacuoles
  • Proteins built in ribosomes
  • Light absorbed by chloroplasts
  • Sugar broken down in mitochondria
which statement best describes influenza
Which statement best describes influenza?
  • Influenza causes most forms of lung cancer.
  • Influenza is caused by poor hygiene.
  • Influenza is cured with antibiotics
  • Influenza is highly contagious.
slide86
Which type of training should local schools offer in order to prepare potential workers in the pharmaceutical industry?
  • Biotechnology
  • Ecology
  • Engineering
  • Geology
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