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In dense forests there are shade plants that can survive only in the shade created by a tree canopy. |
Question: Where are the most reactive nonmetals located on the periodic table?
(A) the uppermost complete row of the table
(B) the rows at the bottom of the table connecting two sections
(C) the column at the far left side of the table
(D) the second column from the right side of the table
Answer: (D) the second column... |
Question: An object such as a hammer weighs less on the Moon than on Earth. This is because the Moon has a
(A) thinner atmosphere than Earth.
(B) smaller diameter than Earth.
(C) stronger magnetic field than Earth.
(D) lower mass than Earth.
Answer: (D) lower mass than Earth. |
A typical cell is enclosed within a membrane and contains Cytoplasm. |
They have two dimensional structured acceleration or rotation. |
Question: To use energy from the Sun to power household appliances, the solar energy must be converted to
(A) heat energy.
(B) light energy.
(C) nuclear energy.
(D) electrical energy.
Answer: (D) electrical energy. |
Question: Water that is used to cool nuclear power plants can be released into water bodies, causing an area called a thermal plume. A thermal plume can be 12-18°C warmer than surrounding waters. Although some fish may be attracted to the warmer water, other organisms may not be able to survive. Government officials or... |
Females reach sexual maturity at 4 to 5 years old and lay about 10 to 50 eggs per clutch on mound-nests constructed from plant materials (2) . |
Question: In 1872, the United States created a national park called Yellowstone. The park includes more than two million acres in the three states of Idaho, Montana, and Wyoming. Which statement best explains why national parks have a positive effect on ecosystems?
(A) National parks limit people from seeing wildlife.
... |
These changes are threatening the natural ecosystems, which have been destroyed to make way for agricultural, industrial, or housing developments. |
Question: Which object refracts light?
(A) mirror
(B) silver spoon
(C) foil
(D) glass prism
Answer: (D) glass prism |
Question: In the hybrid mentioned, which lines are artificially mated to produce hybrid (3 X 4) queens?
(A) lines 1 and 2
(B) lines 2 and 4
(C) lines 3 and 4
(D) lines 1 and 4
Answer: (C) lines 3 and 4 |
Question: Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree?
(A) to attract bees for pollination
(B) to create flower arrangements
(C) to protect the tree from disease
(D) to feed migratory birds
Answer: (A) to attract bees for pollination |
Question: A bracket fungus grows on a dead tree and breaks it down into chemical nutrients. What term best classifies the role of a bracket fungus in this ecosystem?
(A) producer
(B) consumer
(C) parasite
(D) decomposer
Answer: (D) decomposer |
Scientists have identified more than 1,500 different species of scorpions and there may be as many as 1,000 more species undiscovered. |
Question: Which of the following is the best example of a custom-made product?
(A) graphing calculator
(B) light bulb
(C) needle nose pliers
(D) artificial leg
Answer: (D) artificial leg |
Question: Which statement best explains Earth's day and night cycle?
(A) Earth rotates once each day on its axis.
(B) Earth revolves around the Sun each year.
(C) The Sun is closest to Earth during the day.
(D) The tilt of Earth changes throughout the year.
Answer: (A) Earth rotates once each day on its axis. |
Question: Which is the thickest layer of Earth?
(A) crust
(B) inner core
(C) mantle
(D) outer core
Answer: (C) mantle |
Most dogs have habits. |
Some flamingos have natural predators. |
The measurement included gas-exchange, chlorophyll a fluorescence and pigment content. |
Cell division is how organisms grow and repair themselves. |
Question: Which of these items contains only a solution?
(A) a jar of pickles
(B) a bottle of juice
(C) a bag of peanuts
(D) a can of mixed fruit
Answer: (B) a bottle of juice |
Segments of these strings of DNA are called genes. |
Most fat food produces same effects. |
Question: Which type of energy in gasoline is transformed into mechanical energy in a motorcycle engine?
(1) chemical
(2) nuclear
(3) magnetic
(4) electrical
Answer: (1) chemical |
Most birds share features. |
Larger variations may occur in winter and are dependent upon location and altitude. |
A, you studied some of the visible differences between sperm cells and egg cells. |
Question: What do icolts often do to defend themselves when faced with impropriety at a young age?
(A) bark
(B) meow
(C) bite or kick
(D) hide
Answer: (C) bite or kick |
Question: Students are studying some leaves. They group the leaves by shape. Which science process are the students using when they put the leaves in different groups?
(A) classifying
(B) predicting
(C) measuring
(D) experimenting
Answer: (A) classifying |
Question: A scientist observes an unusual activity while studying bacterial cells. Using scientific inquiry to investigate the activity will enable the scientist to
(A) control the behavior.
(B) prove that the behavior is beneficial.
(C) evaluate different explanations of the behavior.
(D) conclude how the behavior wil... |
Most patients have have opportunity. |
Question: Which color shirt will reflect the most light on a hot, sunny day?
(A) black
(B) blue
(C) red
(D) white
Answer: (D) white |
They share a close common ancestor with flowering plants. |
Question: Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?
(A) They swim the same way.
(B) They eat the same food.
(C) They live in the same area of the ocean.
(D) They have similar anatomies.
Answer: (D) They have similar anatomies. |
Question: What are Titans not supposed to have?
(A) hair
(B) genitals
(C) wings
(D) fins
Answer: (B) genitals |
Some phenomena are caused by gases. |
After binary fission, each daughter cell becomes an independent organism. |
Question: Kate sees a full moon. About how much time will go by before the next full moon?
(A) one week
(B) two weeks
(C) one month
(D) one year
Answer: (C) one month |
Question: As a sample of water turns to ice,
(A) new molecules are formed.
(B) the mass of the sample is increased.
(C) the arrangement of the molecules changes.
(D) energy is absorbed by the molecules.
Answer: (C) the arrangement of the molecules changes. |
They are able to aggressively exploit each mating opportunity with an overall succes rate which is very high. |
Telophase: The spindle dissolves and nuclear envelopes form around the chromosomes in both cells. |
Question: In a laboratory activity, four different types of rock were placed in identical acid solutions for one week. Each sample was then measured to see if any of the rock mass was dissolved by the acid solution. Which is the dependent (responding) variable in this activity?
(A) the mass of each rock
(B) the type of... |
Question: According to Berardinelli, what does "Big Fish" target inside every adult?
(A) child
(B) teenager
(C) elderly
(D) parent
Answer: (A) child |
Several abiotic factors control soil moisture content, which is a very important habitat prerequisite for plants. |
Question: Strong winds have the ability to uproot large trees in a wooded area. Which of these organisms would most likely benefit from this change in a habitat?
(A) a bee colony that needs a hive
(B) a bird that needs to build a nest
(C) a squirrel that needs to find shelter
(D) a plant that needs sunlight to grow
Ans... |
With less than one sexual event every third generation, the characteristic pattern expected for asexual organisms appear, with strong allelic divergence between the gene copies in individuals. |
The timeline of its existence is judged at about 230 to 220 million years ago. |
One bacterium lives in the cytoplasma of the other. |
Question: In order to survive, all organisms must have
(1) chlorophyll
(2) carbon dioxide
(3) energy
(4) blood
Answer: (3) energy |
Some substances are secreted by worms. |
Question: Which is a chemical compound?
(A) aluminum
(B) carbonated water
(C) sodium chloride
(D) carbon-14
Answer: (C) sodium chloride |
Question: What is the highest temperature that water can reach in a pot on a stove?
(A) 50°C
(B) 90°C
(C) 100°C
(D) 212°C
Answer: (C) 100°C |
Most ecologists have (part) body substances. |
Question: How would a drought most likely affect the plants of a grassy plain?
(A) There would be shorter plants.
(B) They would have thicker stems.
(C) There would be a greater variety.
(D) They would have brighter flowers.
Answer: (A) There would be shorter plants. |
Most sensory nerves respond to stimulation. |
Question: What organism has allowed many generations and large populations to be studied in a relatively short period of time?
(A) yeast
(B) fruit flies
(C) E. coli
(D) mice
Answer: (C) E. coli |
Carbon dioxide also passes through the skin by diffusion. |
They will also consume small mammals , snakes, and lizards . |
They feed on microscopic plants. |
Question: Which statement best describes why a calcium-fortified juice would advertise that it is good for growing children?
(A) Calcium helps the growth of bones.
(B) Calcium provides energy for growth.
(C) Children need to drink a lot of fluids.
(D) Children need calcium to prevent allergies.
Answer: (A) Calcium help... |
Stoichiometric models that look more specifically into the dynamics of plant–herbivore models yield a set of identical predictions despite divergence in underlying assumptions: (i) X limitation of herbivores, as a result of high C : X ratios in plants, hinders the onset of limit cycles as predicted by the paradox of en... |
Question: Wolves kill many elk every year and often attack old, sick, and injured members of a herd. Which of the following best describes the role of the wolves in the wolf-elk relationship?
(A) competitor
(B) host
(C) parasite
(D) predator
Answer: (D) predator |
Question: In which type of rock are fossils generally found?
(1) igneous
(2) metamorphic
(3) sedimentary
(4) volcanic
Answer: (3) sedimentary |
During digestion, your body takes everything your body needs from the food you eat. |
Question: Which sense can be used to determine an object's ability to reflect light?
(A) sight
(B) hearing
(C) smell
(D) taste
Answer: (A) sight |
Question: Which is a source of sound?
(A) thermal energy
(B) potential energy
(C) a vibration
(D) a medium
Answer: (C) a vibration |
Question: Mr. Mendoza's class studied different body systems. What is an important function of the circulatory system?
(A) providing structural support to muscles
(B) carrying oxygen to cells
(C) getting energy from food
(D) sending messages to the brain
Answer: (B) carrying oxygen to cells |
Both males and females are reported to reach sexual maturity between the ages of 11 and 35 years. |
iv) Omnivores (“everything eaters”): These can eat both plants and animals. |
Most individuals make applications. |
Here are two main processes during sexual reproduction in eukaryotes: meiosis, involving the halving of the number of chromosomes; and fertilisation, involving the fusion of two gametes and the restoration of the original number of chromosomes. |
Question: Which of these geographic features most directly influences the climate of Nevada by limiting the amount of water vapor that can reach the state and fall as rain?
(A) Pacific Ocean
(B) Colorado River
(C) Sierra Nevada Mountains
(D) Columbia River Basin
Answer: (C) Sierra Nevada Mountains |
Question: What do all mammals have in common that distinguishes them from birds?
(A) eyes
(B) fur
(C) a brain
(D) a heart
Answer: (B) fur |
In general, males appear to show preference to male infants. |
Question: Animal cells obtain energy by
(A) processing sunlight.
(B) absorbing nutrients.
(C) growing.
(D) dividing.
Answer: (B) absorbing nutrients. |
Question: Freda always hangs her wet swimsuit outdoors after getting out of the swimming pool. Which of the following is least likely to affect the rate at which Freda's swimsuit dries?
(A) the heat of the Sun
(B) the speed of the wind
(C) the temperature of the water in the pool
(D) the amount of water vapor in the ai... |
Question: A student sets a block at the top of a wooden ramp. The student pushes the block. As the block slides down the ramp, it slows down and then comes to a stop. What force causes the block to slow down?
(A) the force of gravity
(B) the force of friction
(C) the force of magnetism
(D) the force of the student's pu... |
Question: Scientists who have studied the hydrosphere concluded that about 71% of Earth is covered with water. Which part of the hydrosphere is most often associated with the formation of organic rocks?
(A) lakes
(B) oceans
(C) ponds
(D) rivers
Answer: (B) oceans |
Question: Which tool should be used to compare the growth of an algal colony growing in a petri dish?
(A) a scale
(B) a ruler
(C) a hand lens
(D) a balance scale
Answer: (C) a hand lens |
Question: A student measures the growth of a group of plants given different amounts of fertilizer. Which data display should the student use to compare the growth of the plants?
(A) bar graph
(B) scatterplot
(C) line graph
(D) pie chart
Answer: (C) line graph |
Question: Which of these involves the formation of a new chemical substance?
(A) evaporation of gasoline
(B) mixing salt and pepper
(C) dissolving sugar in tea
(D) rusting of an iron chain
Answer: (D) rusting of an iron chain |
Here are found an assemblage of animals often found elsewhere. |
If you apply a force to an object, you may change its energy. |
Question: When a multicellular organism is damaged, it will repair itself as
(A) it mutates.
(B) the cells work together.
(C) the cells move.
(D) it makes its own food.
Answer: (B) the cells work together. |
Question: All these statements concerning galaxies are accurate except
(A) They contain millions of stars.
(B) Most can be seen without a telescope.
(C) They are millions of light-years apart.
(D) Space contains several billion galaxies.
Answer: (B) Most can be seen without a telescope. |
Question: Byron is investigating how temperature affects mold growth on bread. Before starting his procedure, Byron states in his journal that he thinks wet bread placed in the refrigerator will grow the most mold. Which term best describes Byron's statement?
(A) conclusion
(B) result
(C) hypothesis
(D) variable
Answer... |
Question: A volcano under the ocean slowly releases lava over time. As the lava is released, it cools and hardens on the ocean floor. Which feature will most likely form from the release and cooling of the lava on the ocean floor over time?
(A) a fault
(B) an island
(C) a reef
(D) a sandbar
Answer: (B) an island |
Mycorrhizal plants are often more resistant to diseases, such as those caused by microbial soil-borne pathogens . |
Question: Why is a healthy diet important?
(A) It maintains a constant body temperature.
(B) It prevents damage to internal organs.
(C) It makes oxygen for all the cells in the body.
(D) It supplies the body’s needs for growth and energy.
Answer: (D) It supplies the body’s needs for growth and energy. |
Question: Turning off the light when leaving a room is an example of
(A) conserving energy.
(B) wasting energy.
(C) using potential energy.
(D) using chemical energy.
Answer: (A) conserving energy. |
Sex can break up good genetic combinations |
Question: Which function is a role of a feedback system?
(A) stimulation of appetite
(B) identification of gender
(C) determination of blood type
(D) regulation of growth in the skeletal system
Answer: (D) regulation of growth in the skeletal system |
Question: An abiotic factor that most influences the organisms living in a salt marsh is
(A) fish.
(B) water.
(C) predators.
(D) grasses.
Answer: (B) water. |
Question: Biotic forces can cause changes to the surface of Earth. Which is the best example of living organisms causing weathering?
(A) Beavers building a dam across a stream.
(B) Cattle walking and grazing in a grassland.
(C) Salmon making nests for their eggs in a stream.
(D) Tree seedlings growing and forming crack... |
This method can also be used to reduce seed production. |
We pinpoint areas for future study and predict that in many taxa ‘broad’ hybrid zones maintained by ecological selection will be valuable venues for addressing the link between environmental stress, adaptation, and speciation. |
Vegetables are nutrient-dense and calorie-sparse, so you can and should eat a lot of them. |
Question: A hurricane is a heat engine which converts one kind of energy into another. Hurricanes convert most of the heat energy into
(A) chemical energy.
(B) electrical energy.
(C) mechanical energy.
(D) potential energy.
Answer: (C) mechanical energy. |
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