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What is the nervous tissue in the brain and in the rest of the nervous system made up of?
A. neurons
B. plastic
C. electrons
D. ions
Answer:
|
A
|
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|
How do planets usually rotate to their orbital planes?
A. randomly
B. chaotic
C. exactly perpendicular
D. nearly perpendicular
Answer:
|
D
|
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|
What are algae that live in colonies of hundreds of cells called?
A. volvox
B. euglenids
C. chlorophyta
D. rhodophyta
Answer:
|
A
|
sciq
|
Irrigation can waste a lot of what natural resource?
A. fertilizer
B. habitat
C. money
D. water
Answer:
|
D
|
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|
What drives puberty in male humans?
A. methane
B. testosterone
C. estrogen
D. bloodstream
Answer:
|
B
|
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|
What is our largest source of energy?
A. iron
B. wind
C. coal
D. methane
Answer:
|
C
|
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|
Helium-3 is produced by beta decay of a certain what?
A. particle
B. electron
C. quark
D. nuclide
Answer:
|
D
|
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|
What do animals require to grow and develop?
A. sunlight
B. food
C. carbon dioxide
D. sucrose
Answer:
|
B
|
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|
What term is used to describe the process by which organisms give rise to offspring?
A. photosynthesis
B. variation
C. reproduction
D. osmosis
Answer:
|
C
|
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|
What are the nonliving matter that living things need called?
A. elements
B. fluids
C. nutrients
D. acids
Answer:
|
C
|
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|
What term is used to express the measurement of how high land is above sea level?
A. latitude
B. elevation
C. distance
D. knots
Answer:
|
B
|
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|
A pulley is a simple machine that consists of a grooved wheel and?
A. a lever
B. a rope
C. a battery
D. a wedge
Answer:
|
B
|
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|
What is another name for a broad explanation that is supported by a great deal of evidence?
A. hypothesis
B. concept
C. conjecture
D. theory
Answer:
|
D
|
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|
Vinegar is a solution of which acid?
A. crystalline
B. acetic
C. magnesium
D. boric
Answer:
|
B
|
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|
Which system does the large and small intestine belong to?
A. skeletal system
B. molecules system
C. LYMPHATIC
D. digestive system
Answer:
|
D
|
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|
Particles of matter have the most definite shape in what material state?
A. plasma
B. solid
C. liquid
D. gas
Answer:
|
B
|
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|
What body system allows humans to move?
A. muscular system
B. lung system
C. abnormal system
D. digestive system
Answer:
|
A
|
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|
High decibel sounds can damage your?
A. eyes
B. ears
C. nose
D. brain
Answer:
|
B
|
sciq
|
What are the dark areas that appear on the sun called?
A. coreolis effect
B. sunspots
C. anomalies
D. coronas
Answer:
|
B
|
sciq
|
Fusion is another nuclear process that can be used to produce energy. in this process, smaller nuclei are combined to make larger nuclei, with an accompanying release of this?
A. mineral
B. energy
C. food
D. cells
Answer:
|
B
|
sciq
|
One common form of mate choice, called assortative mating, is an individual’s preference to mate with partners who are what?
A. different from themselves
B. far away from
C. close to themselves
D. similar to themselves
Answer:
|
D
|
sciq
|
What powerful microscopes use a beam of subatomic particles instead of a beam of light?
A. scientific microscopes
B. electron microscopes
C. complex microscopes
D. nuclear microscopes
Answer:
|
B
|
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|
Which scientist built the first telescope?
A. einstein
B. newton
C. galileo
D. darwin
Answer:
|
C
|
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|
What type of bacteria change nitrogen gas from the atmosphere to nitrates in soil?
A. hydrophylic bacteria
B. multicellular bacteria
C. spiral bacteria
D. nitrogen fixing bacteria
Answer:
|
D
|
sciq
|
If no unbalanced force acts on an object the object remains at constant velocity or what?
A. constant
B. rotating
C. at rest
D. constant movement
Answer:
|
C
|
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|
What group of organisms was initially misclassified as plants because they also lack the ability to move, grow in soil, and have cell walls?
A. protozoa
B. gymnosperm
C. fungi
D. algae
Answer:
|
C
|
sciq
|
How does the epidermis renew its layer?
A. shedding dead cells
B. loofah
C. exfoliating scrub
D. scabbing
Answer:
|
A
|
sciq
|
What is it called when crystals form from magma?
A. vulcanism
B. transpiration
C. sedimentation
D. crystallization
Answer:
|
D
|
sciq
|
What type of symmetry does an octopus have?
A. internal
B. essential
C. quadrilateral
D. bilateral
Answer:
|
D
|
sciq
|
What is necessary in a person who wishes to play wind instruments?
A. vocal cords
B. healthy lungs
C. powerful lips
D. strong hands
Answer:
|
B
|
sciq
|
What is the scientific term for climates with the least moisture?
A. mediterannean
B. tropical
C. polar
D. arid
Answer:
|
D
|
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|
What's the term for a piece of an organism breaking off and forming a new organism?
A. extinction
B. improvization
C. fragmentation
D. depletion
Answer:
|
C
|
sciq
|
What animal group can be found in every environment on earth, but primarily in the warm and moist tropics?
A. horses
B. insect
C. rodent
D. reptiles
Answer:
|
B
|
sciq
|
Most people can survive only a few days without what essential substance?
A. air
B. food
C. carbon
D. water
Answer:
|
D
|
sciq
|
The vegetal pole refers to the concentration of what toward one pole of an egg?
A. shell
B. yolk
C. light
D. embryo
Answer:
|
B
|
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|
What machines have scientist built to smash particles that are smaller than atoms into each other head-on?
A. nitrogen accelerators
B. energy accelerators
C. particle accelerators
D. Atom Accelerators
Answer:
|
C
|
sciq
|
What type of relationship occurs between organisms when one member benefits without affecting the other?
A. parasitic
B. bilateral
C. commensalism
D. cooperative
Answer:
|
C
|
sciq
|
The type of what dictates how far it can penetrate into matter, such as lead or human flesh?
A. insulation
B. radiation
C. specific gravity
D. evaporation
Answer:
|
B
|
sciq
|
What role do proteins play in a biological reaction?
A. reverse hormones
B. amino acid chains
C. act as catalysts
D. antioxidants
Answer:
|
C
|
sciq
|
If you drive or take the bus to school or work, you are using a vehicle that probably burns gasoline, a material that burns fairly easily and provides energy to power the vehicle. recall that burning is a?
A. temperature change
B. energy change
C. physical change
D. chemical change
Answer:
|
D
|
sciq
|
Muscles are composed mostly of cells called what?
A. muscle fibers
B. muscle organelles
C. muscle polymers
D. muscle filament
Answer:
|
A
|
sciq
|
Conifers are the most prevalent type of what plant group?
A. gymnosperms
B. angiosperms
C. algae
D. theropods
Answer:
|
A
|
sciq
|
What element enters the body when an organism breathes?
A. oxygen
B. helium
C. methane
D. water
Answer:
|
A
|
sciq
|
Bonding in molecules with resonance forms is better described by which theory?
A. Geiger theory
B. string theory
C. Pascal's theory
D. molecular orbital theory
Answer:
|
D
|
sciq
|
In places like the grand canyon, hard rocks that are resistant to weathering form what, while softer rocks that weather more easily form slopes?
A. cliffs
B. peaks
C. valleys
D. crevasses
Answer:
|
A
|
sciq
|
When two skateboarders push against each other what happens?
A. they stick together
B. they magnetize
C. they rise
D. they move apart
Answer:
|
D
|
sciq
|
The three layers of protective coverings of the spinal cord is called what?
A. meninges
B. dermis
C. muscles
D. tendons
Answer:
|
A
|
sciq
|
A measure of how close a series of measurements are to one another is what?
A. density
B. calculation
C. precision
D. reflection
Answer:
|
C
|
sciq
|
Ionic compounds contain cations and anions rather than what?
A. analogous neutral molecules
B. discrete neutral molecules
C. positive molecules
D. characterized neutral molecules
Answer:
|
B
|
sciq
|
Are giraffes herbivores or are they omnivores?
A. omnivores
B. carnivores
C. neither
D. herbivores
Answer:
|
D
|
sciq
|
Respectively, which parts of the circulatory system carry blood from the heart toward capillaries, and return blood to the heart from capillaries?
A. arteries and capillaries
B. organs and veins
C. parasites and veins
D. arteries and veins
Answer:
|
D
|
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|
It was not until the era of the ancient greeks that we have any record of how people tried to explain the chemical changes they observed and used. at that time, natural objects were thought to consist of only four basic elements: earth, air, fire, and this?
A. soul
B. sky
C. water
D. grass
Answer:
|
C
|
sciq
|
In science, what do we call a mathematical relationship that exists between observations under a given set of conditions?
A. idea
B. law
C. theory
D. fact
Answer:
|
B
|
sciq
|
What conducts nerve-like electrical signals that help integrate whole-plant function?
A. the ploem
B. the stem
C. the spicule
D. the stamen
Answer:
|
A
|
sciq
|
Found in many products, such as petri dishes, agar is made from mucilagnious material in this?
A. seaweed
B. gelatin
C. fungi
D. seawater
Answer:
|
A
|
sciq
|
What is the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane?
A. ectocytosis
B. autolysis
C. metastasis
D. endocytosis
Answer:
|
D
|
sciq
|
What are the layered rocks that form when certain prokaryotes bind thin films of sediment together?
A. quartzes
B. stomatolites
C. stalagmites
D. stalactites
Answer:
|
B
|
sciq
|
Where are the taste buds located in humans?
A. mouth
B. teeth
C. lips
D. tongue
Answer:
|
D
|
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|
What describes the way light reflects off of the surface of the mineral?
A. intensity
B. hardness
C. luster
D. density
Answer:
|
C
|
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|
What tissue consists of cells that form the body’s structure?
A. reproductive
B. fibrous
C. congenital
D. connective
Answer:
|
D
|
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|
What forms at the boundary between two air masses?
A. a rough
B. a front
C. hurricane
D. a cool
Answer:
|
B
|
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|
Nitrogen wastes are produced by the breakdown of what during normal metabolism?
A. lipids
B. enzymes
C. proteins
D. hormones
Answer:
|
C
|
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|
In the humoral response, what protein substances help neutralize or eliminate toxins and pathogens in the blood and lymph?
A. antibodies
B. platelets
C. membranes
D. parasites
Answer:
|
A
|
sciq
|
Most ferns produce the same type of spores and are therefore called what?
A. sporozoans
B. homosporous
C. heterosporous
D. seeds
Answer:
|
B
|
sciq
|
In which way do sunspots occur?
A. by themselves
B. in fours
C. in threes
D. in pairs
Answer:
|
D
|
sciq
|
What is the most important source of electromagnetic waves on earth?
A. cell phones
B. the sun
C. wireless networks
D. radios
Answer:
|
B
|
sciq
|
Conifers are the dominant phylum of gymnosperms, with the most variety of species. most are tall trees that usually bear scale-like or needle-like leaves. the thin shape of the needles and their waxy cuticle limits water loss through this?
A. transpiration
B. transportation
C. sedimentation
D. evaporation
Answer:
|
A
|
sciq
|
Connecting to the brainstem and extending down the body through the spinal column is the spinal cord. the spinal cord is a thick bundle of nerve tissue that carries information about the body to this?
A. brain
B. stomach
C. lungs
D. liver
Answer:
|
A
|
sciq
|
Where do most cubozoans live?
A. rivers
B. tropical oceans
C. arctic oceans
D. lakes
Answer:
|
B
|
sciq
|
What type of treatment is being researched that may cure or prevent genetic disorders?
A. variation therapy
B. preventive therapy
C. regulatory therapy
D. gene therapy
Answer:
|
D
|
sciq
|
What are the names of foul-smelling amines, formed as a part of the decay process after death?
A. methane and sulfur
B. sulfur and formaldehyde
C. cadaverine and putrescine
D. formaldehyde and cadaverine
Answer:
|
C
|
sciq
|
What's it called when the reaction is sped up until equilibrium is established?
A. favoring
B. limiting
C. pushing
D. division
Answer:
|
A
|
sciq
|
What are the smallest particles of water called?
A. ions
B. molecules
C. hydrogen
D. atoms
Answer:
|
B
|
sciq
|
The hormone androgen increases aggressiveness and promotes what type of behaviors?
A. sexual
B. asexual
C. nervous
D. cognitive
Answer:
|
A
|
sciq
|
Which currents distribute heat around the planet and have a large impact on climate?
A. air
B. electrical
C. wind
D. surface
Answer:
|
D
|
sciq
|
What type of gas is a harmless gas that living things add to the atmosphere during respiration?
A. carbon dioxide
B. oxygen
C. helium
D. Hydrogen
Answer:
|
A
|
sciq
|
What is formed when hot lava cools?
A. magma crystals
B. hydrogen crystals
C. lava rock
D. mineral crystals
Answer:
|
D
|
sciq
|
Which radiations helps sterilize medical supplies?
A. gamma radiation
B. ionizing radiation
C. ions radiation
D. beta radiation
Answer:
|
B
|
sciq
|
What type of receptors, also known as intracellular or cytoplasmic receptors, are found in the cytoplasm of the cell and respond to hydrophobic ligand molecules that are able to travel across the plasma membrane?
A. internal
B. external
C. essential
D. mechanical
Answer:
|
A
|
sciq
|
Why is water important for the nervous system?
A. to prevent disease
B. to prevent dehydration
C. to carry nutrients
D. to carry information
Answer:
|
B
|
sciq
|
What term means the tendency of a mineral to break along certain planes?
A. cavity
B. fault
C. fracture
D. cleavage
Answer:
|
D
|
sciq
|
What are the parts used in electronic devices such as computers called?
A. batteries
B. digital components
C. electronic components
D. chargers
Answer:
|
C
|
sciq
|
What type of function does the long bone perform?
A. acts as pivot
B. acts as pulley
C. work as lever
D. works as piston
Answer:
|
C
|
sciq
|
Metabolism includes both anabolic and which other reaction?
A. biogenic
B. organic
C. enzymatic
D. catabolic
Answer:
|
D
|
sciq
|
A virus is essentially dna or rna surrounded by a coat of what?
A. acids
B. paint
C. protein
D. organism
Answer:
|
C
|
sciq
|
What is the process of generating electric current with a magnetic field?
A. electromagnetic ordination
B. magnetic induction
C. mechanical induction
D. electromagnetic induction
Answer:
|
D
|
sciq
|
Increasing what property of dirt would make it easier to rinse off your hands?
A. solubility
B. density
C. viscosity
D. turbidity
Answer:
|
A
|
sciq
|
Net production efficiency allows ecologists to quantify how efficiently organisms of a particular what incorporate the energy they receive into biomass?
A. sea level
B. trophic level
C. neural level
D. hypothesized level
Answer:
|
B
|
sciq
|
Some hormones produced by the anterior pituitary regulate the production of hormones by other tissues belonging to what system?
A. digestive
B. nervous
C. endocrine
D. cardiovascular
Answer:
|
C
|
sciq
|
A warm-air heating system uses what kind of energy to heat air?
A. cosmic
B. atmospheric
C. nuclear
D. thermal
Answer:
|
D
|
sciq
|
Which type of galaxies contain very little gas and dust, are red to yellow in color, contain over a trillion stars and have mostly old stars?
A. blue elliptical galaxies
B. giant orbital galaxies
C. giant elliptical galaxies
D. giant gaseous galaxies
Answer:
|
C
|
sciq
|
What is a controlled scientific test that often takes place in a lab?
A. an observeration
B. a testing
C. an experiment
D. a viewing
Answer:
|
C
|
sciq
|
What causes the endometrium to thicken during a menstrual cycle?
A. ovulation
B. testosterone
C. blood
D. estradiol
Answer:
|
D
|
sciq
|
What process refers to the conversion of atmospheric nitrogen to ammonia?
A. biological respiratory fixation
B. biological nutrient fixation
C. biological nitrogen fixation
D. biological ammonia fixation
Answer:
|
C
|
sciq
|
What is it called when two species evolve matching traits?
A. spontaneous mutation
B. coevolution
C. interconnection
D. Allopatric speciation
Answer:
|
B
|
sciq
|
What is the term for water that falls from clouds?
A. wind
B. precipitation
C. atmosphere
D. lightning
Answer:
|
B
|
sciq
|
Echinoderms lack what type of system that in humans consists of the brain and spinal cord?
A. peripheral nervous system
B. autonomic system
C. centralized nervous system
D. endocrine system
Answer:
|
C
|
sciq
|
What class of invertebrate animals has additional appendages called the chelicerae and the pedipalps?
A. arachnid
B. mammals
C. fish
D. arthropod
Answer:
|
A
|
sciq
|
The burning of what type of fuels is a major source of sulfur oxides and nitrogen oxides?
A. fossil
B. biofuels
C. renewable
D. synthetic
Answer:
|
A
|
sciq
|
What is the science of classifying living things is called?
A. methodology
B. physiology
C. entomology
D. taxonomy
Answer:
|
D
|
sciq
|
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