EOG ReviewScience 8th grade

Students will need a calculator and a periodic table!

An atom is composed of protons, electrons, and neutrons. What is the electric charge on the proton?

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1. 0

2. -1

3. +1

4. +2

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The organelle that is responsible for making glucose

is the ____

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1. Mitochondria2. Chloroplast3. Ribosome4. Lysosome

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The cellular process that breaks down glucose to produce energy is______

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1. Respiration2. Photosynthesis3. Mitochondria4. Chloroplast

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Which of the following is not one of the statements of the Cell

Theory?

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1. All living things are made up of one or more cells.

2. Cells perform basic life functions.

3. Cells come from other living cells.

4. All cells are capable of making glucose.

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Most cells obtain water through which process?

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1. Diffusion2. Osmosis3. Exocytosis4. Active transport

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A substance that is made up of two or more elements is called

____

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1. An element2. A compound3. A mixture4. A solution

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Which process involves an increase in the size of an individual cell or a multi-

cellular organism?

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1. regulation2. reproduction3. meiosis4. protein

synthesis

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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

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1. A vector2. A carrier3. Quarantined4. Not contagious

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Animal cells and plant cells differ because plant cells ____

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1. Have mitochondria, and animal cells do not.

2. Have nuclei, and animal cells do not.

3. Have cell walls, and animal cells do not.

4. Have lysosomes, and animal cells do not.

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If an irregular shaped object has a volume of 22cm3 and a mass

of 44 g, what is the object’s density?

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0%

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0% 1. 2 g/cm3

2. 11 g/cm3

3. 0.5 g/cm3

4. 968 g/cm3

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What best describes how water moves in one continuous

column from a plant’s roots to its leaves?

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1. Density and buoyancy

2. Polarity and surface tension

3. Cohesion and adhesion

4. Polarity and cohesion

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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?

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1. If the amount of light that a plant is exposed to increases, then the plant will grow less.

2. If the amount of light that a plant is exposed to decreases, then the plant will grow more.

3. If the amount of light that a plant is exposed to increases, then the plant will grow more.

4. If the amount of water that a plant is given increases, then the plant will grow more.15

Tectonic plates make up which of the following layers of the

Earth?

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1. The crust only2. The mantle only3. The crust and

the top portion of the mantle

4. The top portion of the mantle and all of the core15

Where would a plant cell store any excess glucose or water?

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0%

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0% 1. The golgi apparatus

2. The cytoplasm3. The central

vacuole4. The cell

membrane15

Which part of the experiment does the person performing the

experiment have control over?

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1. The independent variable

2. The dependent variable

3. The results4. The conclusion

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Which of the following statements about viruses is

false?

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1. Viruses are smaller than bacteria.

2. Viruses are not considered living or nonliving.

3. Viruses can reproduce on their own.

4. Viruses cause disease.

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The atomic number of an atom is the number of ____

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1. Protons2. Neutrons3. Protons and

neutrons combined

4. Electrons and neutrons combined

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An ion is an atom ____

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1. That has an unequal number of protons and electrons.

2. That has an unequal number of protons and neutrons.

3. That has the same number of protons and neutrons.

4. That has the same number of protons and electrons.

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Which of the following is true regarding photosynthesis and

respiration?

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1. Photosynthesis occurs in the mitochondria; respiration occurs in the chloroplasts.

2. Photosynthesis breaks down glucose; respiration makes glucose.

3. Photosynthesis occurs in the chloroplasts; respiration occurs in the mitochondria.

4. All cells can undergo both photosynthesis and respiration.

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What type of ecosystem is formed in areas where salty ocean water

mixes with fresh water from rivers?

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1. Coral reef2. Estuary3. Intertidal zone4. Benthic zone

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Particles floating in water that may make the water cloudy is

known as ___

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0% 1. Concentration2. Turbidity3. Cohesion4. Adhesion

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Which of the following is a change in physical

composition?

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1. A brick being ground up into fine dust.

2. A purple substance forming when iodine is added to cornstarch.

3. Vinegar bubbling when baking soda is added.

4. An iron nail rusting.

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Which of the following is a change in chemical

composition?

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1. An aluminum cube is rolled into a flat sheet.

2. Liquid water freezing to form solid ice.

3. Solid butter melting on the stove.

4. A white precipitate forming as a result of the combination of two liquids.

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What kind of bond would you expect between H, S and O?

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1. Covalent2. Metallic3. Ionic4. None

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Which of the following is not one of the three processes of

the hydrologic cycle?

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1. Condensation2. Evaporation3. Collection4. Precipitation

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Where is most freshwater located on Earth?

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1. Polar ice caps/glaciers

2. Groundwater3. Rivers4. Lakes

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An atom is composed of protons, neutrons, and electrons. What is

the electric charge on an electron?

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0%

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0% 1. 02. +13. -14. +2

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Bacteria are organisms that lack which organelle?

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1. Cell membrane2. Mitochondria3. Cytoplasm4. Nucleus

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Which of the following statements is true regarding prokaryotic cells

and eukaryotic cells?

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1. Prokaryotic cells have a nucleus; eukaryotic cells do not have a nucleus.

2. Prokaryotic cells are able to make glucose; eukaryotic cells are not.

3. Prokaryotic cells do not have a nucleus; eukaryotic cells have a nucleus.

4. Prokaryotic cells are not able to make glucose; eukaryotic cells can.

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The process of cells making glucose and oxygen is

known as__

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1. Respiration2. Photosynthesi

s3. Mitochondria4. Chloroplasts

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Which of the following statements is false regarding

bacteria?

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1. Bacteria have DNA.

2. Bacteria are capable of reproducing.

3. Bacteria are not made of cells.

4. Bacteria can be killed with antibiotics.

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How many protons does calcium (Ca) have?

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1. 192. 203. 214. 22

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Which of the following is not one of the main categories of

elements on the periodic table?

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0% 1. Nonmetals2. Transition metals3. Metals4. Metalloids

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The elements in the periodic table are organized by___

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1. Their atomic numbers.

2. Their names.3. Their atomic

mass numbers.4. Their activity

levels.

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Which of the following statements is true regarding

cellular respiration?

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1. Respiration occurs in the chloroplasts of cells.

2. Respiration produces glucose for the cells to use.

3. Oxygen is used to break down glucose to get energy.

4. Carbon dioxide is used to break down glucose to get water.15

Mosquitoes and ticks are animals that spread disease to humans. There are considered ______ of West Nile and Lyme disease

respectively.

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0% 1. carriers2. vectors3. pathogens4. fungi

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Which level of organization is missing from this grouping:

cell, tissue, ______, organ system, organism?

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1. Atoms2. Organ3. Organelle4. Molecules

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At 6:00, approximately how many bacteria are in the

culture?

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0% 1. 3,0002. 4,0003. 5,0004. 8,000

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At approximately what time are there 22,000 bacteria

cells?

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0% 1. 6:002. 8:003. 7:004. 9:00

If the bacteria cells are doubling every hour,

approximately how many bacteria cells will there be at

10:00?

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1. 47,0002. 78,0003. 54,0004. 88,000

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What is the best explanation for the rapid bacteria growth?

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1. The bacteria cells were infected with a virus causing them to reproduce rapidly.

2. Bacteria cells reproduce rapidly through binary fission.

3. Bacteria cells reproduce quickly through mitosis and cytokinesis.

4. Bacteria cells divide every 3 hours to produce new cells.

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What is the best way to prevent bacterial infection in a cut?

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1. Vaccinations from the doctor.

2. Stay home until the cut heals so you are not exposed to bacteria.

3. Wash the cut with soap and water.

4. Do not cover the wound, leave it open to the air.15

Looking at the column that says maximum amount allowed, what does

ppm represent?1. Parts per molecule2. Parts per million3. Portions per minute4. Portions per million

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Which two contaminants can cause problems for kidneys?

1. Mercury and Copper

2. Nitrates and Copper

3. Cyanide and Mercury

4. Nitrates and Cyanide

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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?

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1. There is too much copper in the water.

2. There is too much cyanide in the water.

3. There is not enough mercury in the water.

4. There are a lot of sick people in this town.

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Considering the maximum amount allowed, which chemical is the most

dangerous?

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0% 1. Copper2. Mercury3. Cyanide4. Nitrates

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Looking at the data table, which of the following statements is

NOT true?1. Runoff from fertilizer can enter water and cause

infants to become sick.2. Thyroid problems can be contributed to cyanide

poisoning.3. Kidney damage can be caused by multiple

contaminants.4. Only factories and farms can cause water

contamination.

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Which describes the hydrosphere?

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1. Most of it contains salt.

2. It is made of only freshwater.

3. All of it is located above ground.

4. It is formed by a climate change.15

Which condition in the ocean is most responsible for an

increase in the fish population near the surface?

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1. Buoyancy2. Density3. Salinity4. Upwelling

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Which pair of organisms represents a connection

between aquatic and terrestrial food webs?

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1. Whales and plankton

2. Seagulls and oysters

3. Spiders and mosquitoes

4. Humans and coral15

Which tool is used to determine precipitation

amounts?

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1. Balance scale2. Hygrometer3. Rain gauge4. Thermometer

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Which is evidence that elements chemically react to form new

compounds?

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1. Melting a solid2. Freezing a

liquid3. Moving a piece

of metal with a magnet

4. Pouring two liquids together to create a solid15

Which property of metals allows them to be used to make coins that have the same thickness?

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1. Electrical conductivity

2. Density3. Malleability4. Specific heat

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Which best describes why metals are used for making pots and pans

that are used for cooking?

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0% 1. Metals have low specific heats and high melting points.

2. Metals have high specific heats and low melting points.

3. Metals have low specific heats and low melting points.

4. Metals have high specific heats and high melting points.

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Which best describes the physical change of an aluminum soda can after

it is crushed?

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1. There is a change in the mass of the can.

2. There is a change in the weight of the can.

3. There is a change in the volume of the can.

4. There is a change in the specific heat of the can.

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A chemical reaction produces two new substances, and each product

has a mass of 25 grams. What was the total mass of the

reactants?

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1. 25 grams2. 50 grams3. 75 grams4. 100 grams

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Which factor best explains why some people will react differently

than others to the same dose of an antibiotic?

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1. High potency2. Low

concentration3. Individual

exposure4. Individual

susceptibility15

If a farmer decides to have a pesticide-free farm, which is most

likely the result of this choice?

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1. The famer’s crops will yield more than if pesticides had been applied.

2. The farmer’s crops will yield the same amount whether or not pesticides have been applied.

3. Insects may eat a larger percentage of the farmer’s crops, causing a lower harvest than if pesticides had been applied.

4. Insects may eat a lower percentage of the farmer’s crops, causing a higher harvest than if pesticides had been applied.

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Which is the best evidence that two continents were once

connected?

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1. They have similar types of rocks and fossils.

2. They are in the same stage of succession.

3. They exist along the same line of latitude.

4. They have the same climate.

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What does a scientist most likely consider when studying the relative ages of rock layers in a canyon wall?

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1. Chemical weathering

2. Current climate3. Amount of daily

rainfall4. Law of

Superposition

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Which can most likely be concluded about the top layer of rock seen in an undisturbed

cliff wall?0%0%0%0%

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1. The top layer is older than layers located farther down the cliff.

2. The top layer is younger than layers located farther down the cliff.

3. The top layer contains more fossils than layers located farther down the cliff.

4. The top layer contains fewer fossils than layers located farther down the cliff.

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What kind of fossils assist in relative dating because they existed over large areas for

short periods of time?

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1. Rock fossils2. Original

remains3. Index fossils4. Carbon films

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Which best explains why fossils of the same species of a reptile

were discovered in South America and in western Africa?

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1. The reptiles evolved in both South America and Africa.

2. The continents of South America and Africa were once joined.

3. Land bridges connected the continents of South America and Africa.

4. The reptiles could swim the distance between South America and Africa.

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Which process best explains how mountain ranges are worn down

over time?

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0% 1. Asteroid impacts2. Volcanic eruptions3. Mechanical and chemical

weathering4. Continental drift and seafloor

spreading

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Which organelle stores genetic information?

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1. Flagellum2. Nucleus3. Mitochondrion4. Vacuole

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Which of the following carcinogens would one might be exposed to in

a home or similar structure?

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1.Mercury2.Carbon

Monoxide3.Asbestos4.DDT

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Which statement best describes influenza?

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1. Influenza causes most forms of lung cancer.

2. Influenza is caused by poor hygiene.

3. Influenza is cured with antibiotics

4. Influenza is a highly contagious virus.15

Which type of training should local schools offer in order to prepare

potential workers in the pharmaceutical industry?

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0% 1. Biotechnology2. Ecology3. Engineering4. Geology

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You’re Done!!