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An example of beta decay is the emission of an electron by a carbon-14 what?
A. protons
B. molecules
C. nucleus
D. ion
Answer:
|
C
|
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|
Which theory describes the distribution of electrons in molecules in much the same way that the distribution of electrons in atoms is described using atomic orbitals?
A. atomic orbital theory
B. molecular orbital theory
C. atomic distribution theory
D. molecular distribution theory
Answer:
|
B
|
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|
Oversecretion of insulin can cause what?
A. inflammation
B. hypoxia
C. hypoglycemia
D. hyperglycemia
Answer:
|
C
|
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|
The first few species to colonize a disturbed area are called what?
A. original species
B. colonization species
C. pioneer species
D. producer species
Answer:
|
C
|
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|
What are the two loops of blood flow in the cardiovascular system?
A. pulmonary and systemic
B. systolic and diastolic
C. anabolic and metabolic
D. aerobic and anaerobic
Answer:
|
A
|
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|
What is the name of a group of hereditary diseases that affect the body's ability to control blood clotting?
A. anemia
B. hypertension
C. arithmya
D. hemophilia
Answer:
|
D
|
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|
Protists which use their tails to eat are called what?
A. cycle - feeders
B. swimmers
C. filter-feeders
D. flagellators
Answer:
|
C
|
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|
What term is used to describe foods containing active cultures of beneficial bacteria?
A. sembiotic
B. carotenoids
C. antibiotics
D. probiotic
Answer:
|
D
|
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|
What helps control the muscles and maintain balance?
A. muscular system
B. circulatory system
C. nervous system
D. lymphatic system
Answer:
|
C
|
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|
What unit of power is equal to 1 joule of energy per second?
A. watt
B. volt
C. byte
D. hertz
Answer:
|
A
|
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|
What is just below the cerebrum and coordinates body movements?
A. spinal cord
B. bloodstream
C. cerebellum
D. hypothalamus
Answer:
|
C
|
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|
What part of blood releases clotting factors?
A. white blood cells
B. hemoglobin
C. platelets
D. erythrocytes
Answer:
|
C
|
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|
Adding carbon to iron makes what type of metal?
A. steel
B. ions
C. plastic
D. titanium
Answer:
|
A
|
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|
Which structure includes sugar-phosphate "backbones", composed of alternating phosphate groups and deoxyribose sugars, and nitrogenous bases?
A. dna triple helix
B. dna double helix
C. molecule double helix
D. mulecular triplex
Answer:
|
B
|
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|
In a hydrogen replacement reaction, the hydrogen in the acid is replaced by what?
A. gas
B. an active metal
C. oxygen
D. water
Answer:
|
B
|
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|
Mitosis and meiosis are both forms of division of the nucleus in these?
A. endogenous cells
B. converts cells
C. reproduction cells
D. eukaryotic cells
Answer:
|
D
|
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|
What is the last step in a scientific investigation?
A. retesting findings
B. documenting findings
C. communicating findings
D. verifying findings
Answer:
|
C
|
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|
Where is multiple fission more often observed?
A. among protists
B. among vertebrates
C. among multi-celled organisms
D. among animals
Answer:
|
A
|
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|
What type of invertebrates where the earliest animals?
A. aquatic invertebrates
B. annelids
C. arachnids
D. cnidaria
Answer:
|
A
|
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|
Unlike wood and glass, steel is an example of a material that responds to what force?
A. thermal
B. magnetic
C. electromagnetic
D. kinetic
Answer:
|
B
|
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|
Carefully controlling the speed of a fission reaction produces what kind of energy?
A. atomic
B. nuclear
C. chemical
D. thermal
Answer:
|
B
|
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|
When two electric contacts come together it completes a what?
A. breaker
B. cricuit
C. atom
D. charge
Answer:
|
B
|
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|
Pure nonpolar covalent bonds exist only between what?
A. three altered atoms
B. two producing atoms
C. two altered atoms
D. two identical atoms
Answer:
|
D
|
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|
The decay rate is measured in a unit called the what?
A. decay rate
B. exponential decay
C. radioactive decay
D. half-life
Answer:
|
D
|
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|
What is a condition in which a material called plaque builds up inside arteries?
A. scoliosis
B. fibrosis
C. atherosclerosis
D. arthritis
Answer:
|
C
|
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|
Quarks in the middle energy family are found in cosmic rays and are produced in what?
A. cosmic accelerators
B. particle processors
C. particle splicers
D. particle accelerators
Answer:
|
D
|
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|
What celestial body in the solar system makes up most of its total mass?
A. Andromeda
B. earth
C. Jupiter
D. sun
Answer:
|
D
|
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|
Free ear lobes, widow's peak and a dimpled chin are examples of what kind of traits in humans?
A. mendelian
B. genetic disorders
C. adaptations
D. spontaneous mutations
Answer:
|
A
|
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|
Producing light without heat is called what?
A. luminescence
B. bioluminescence
C. thermoluminescence
D. osmosis
Answer:
|
A
|
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|
What natural part of the water cycle can cause damage and death?
A. evaporation
B. floods
C. expiration
D. clouds
Answer:
|
B
|
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|
How many large eggs are generated during oogenesis?
A. 2
B. 4
C. 3
D. one
Answer:
|
D
|
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|
Gaseous nitrogen is converted into forms that can be used by plants during a process called what?
A. plant fixation
B. nitrogen fixation
C. oxygen fixation
D. dioxide fixation
Answer:
|
B
|
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|
What is an example of a disease that affects the blood?
A. tuberculosis
B. anemia
C. rickets
D. scoliosis
Answer:
|
B
|
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|
Name the term used to described prokaryotes that require oxygen.
A. aerobic
B. mouth breathers
C. hydrophylic
D. anaerobic
Answer:
|
A
|
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|
Many ionic compounds with relatively large cations and a 1:1 cation:anion ratio have this structure, which is called the what?
A. boron chloride structure
B. analogous structure
C. cesium chloride structure
D. hydrocarbon structure
Answer:
|
C
|
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|
What property increases as an object's mass increases, making a full box harder to push than an empty one?
A. inertia
B. gravity
C. magnetism
D. weight
Answer:
|
A
|
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|
What will happen to sea levels due to increased global temperatures?
A. Drop
B. surge
C. reverse
D. rise
Answer:
|
D
|
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|
Sea-lilies, sea cucumbers and sea stars fall into what class of organism?
A. snakes
B. crabs
C. echinoderms
D. mollusks
Answer:
|
C
|
sciq
|
What kind of rock forms when material such as gravel, sand, silt or clay is compacted and cemented together?
A. ingenious
B. sedimentary
C. craters
D. limestone
Answer:
|
B
|
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|
In science, we need to make observations on various phenomena to form and test what?
A. hypotheses
B. variations
C. theories
D. assumptions
Answer:
|
A
|
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|
What do industries use water to generate?
A. light
B. pollution
C. electricity
D. refrigeration
Answer:
|
C
|
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|
Mammals are synapsids, meaning they have a single opening in what structure?
A. spine
B. skull
C. hip
D. heart
Answer:
|
B
|
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|
What are the properties of solutions called that depend only on the concentration of dissolved particles and not on their identity?
A. colligative properties
B. platyhelminth properties
C. platyhelminth properties
D. platyhelminth properties
Answer:
|
A
|
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|
Liquids that mix with each other in all proportions are said to be miscible, maning they have infinite mutual what?
A. solubility
B. viscosity
C. salinity
D. insolubility
Answer:
|
A
|
sciq
|
Which law relates the pressure, volume, and temperature of a gas?
A. directions gas law
B. newton's law
C. combines gas law
D. shifts gas law
Answer:
|
C
|
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|
Heat and light are forms of what, which refers to the ability to do work?
A. waves
B. food
C. fuel
D. energy
Answer:
|
D
|
sciq
|
Volcano chains form as an oceanic plate moves over what?
A. dust spot
B. hot spot
C. Water spot
D. melt spot
Answer:
|
B
|
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|
What type of planet is jupiter?
A. a red dwarf
B. a noble gas
C. a phantom
D. a gas giant
Answer:
|
D
|
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|
What does antifreeze do to the freezing temperature of the water in car radiators?
A. lowers it
B. foresees it
C. keeps it constant
D. raises it
Answer:
|
A
|
sciq
|
What process typically occurs to metal exposed to outside elements?
A. corrosion
B. extraction
C. explosion
D. shrinkage
Answer:
|
A
|
sciq
|
The innermost layer of the sun is known as what?
A. core
B. surface
C. convective zone
D. photosphere
Answer:
|
A
|
sciq
|
Motor neurons and sensory neurons are part of what nervous system?
A. central
B. autonomic
C. peripheral
D. sensory-somatic
Answer:
|
D
|
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|
What type of science is the study of matter and energy and includes chemistry and physics?
A. Earth science
B. biology
C. genetics
D. physical science
Answer:
|
D
|
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|
When plants lose their leaves in the fall, what chemical is produced less to cause the change?
A. pheromes
B. chlorophyll
C. oxygen
D. carbonate
Answer:
|
B
|
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|
In which kind of animals does parthenogenesis occur?
A. tissues
B. mammals
C. invertebrates
D. species
Answer:
|
C
|
sciq
|
What is the name of the temporary organ that begins to form from the trophoblast layer of cells shortly after implantation?
A. appendix
B. embryo
C. uterus
D. placenta
Answer:
|
D
|
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|
What term is used to describe anything that takes up space and has mass?
A. size
B. opacity
C. weight
D. matter
Answer:
|
D
|
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|
What is the organ that senses sound?
A. eye
B. nose
C. ear
D. skin
Answer:
|
C
|
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|
What can be described in terms of size, density, and distribution?
A. populations
B. dimensions
C. habitats
D. biomes
Answer:
|
A
|
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|
What is the term for the simplest form of matter that has a unique set of properties?
A. an element
B. a neutron
C. an atom
D. an electron
Answer:
|
A
|
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|
What causes light to refract?
A. speeding up
B. slowing down
C. blinking
D. bending
Answer:
|
B
|
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|
Capacitors can be used to filter out low frequencies. for example, a capacitor in series with a sound reproduction system rids it of the 60 hz what?
A. white noise
B. vibration
C. echo
D. hum
Answer:
|
D
|
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|
What is made up of nerve cells that sense stimuli and transmit signals?
A. blood tissue
B. muscle tissues
C. nervous tissue
D. dependent tissue
Answer:
|
C
|
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|
Some animals prepare for the long winter by going into what?
A. fermentation
B. suspended animation
C. hibernation
D. pollination
Answer:
|
C
|
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|
It may seem as though burning destroys matter, but the same amount of what, still exists after a campfire as before?
A. concentrations
B. mass
C. termperature
D. energy
Answer:
|
B
|
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|
Different isotopes of an element have different mass numbers because they have different numbers of what?
A. neutrons
B. electrons
C. nuclei
D. protons
Answer:
|
A
|
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|
Density is defined as the mass of an object divided by its what?
A. growth
B. volume
C. liquid
D. size
Answer:
|
B
|
sciq
|
What element is responsible for one-half of the osmotic pressure gradient that exists between the interior of cells and their surrounding environment?
A. calcium
B. sodium
C. potassium
D. nitrogen
Answer:
|
B
|
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|
What types of orbits do comets usually have?
A. elliptical
B. convex
C. vertical
D. spectral
Answer:
|
A
|
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|
What describes how close an estimate is to a known standard?
A. precision
B. frequency
C. accuracy
D. diversity
Answer:
|
C
|
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|
Canoe paddles, nutcracker, and hammer are examples of what type of simple machine?
A. lock
B. handle
C. lever
D. pivot
Answer:
|
C
|
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|
What do most species of monkeys have that no apes or humans do?
A. fur
B. large brain
C. tail
D. five fingers
Answer:
|
C
|
sciq
|
What are joints in which the bones are connected by a band of connective tissue?
A. cartilaginous
B. syndesmoses
C. plane
D. saddle
Answer:
|
B
|
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|
What are the four stages of food processing?
A. ingestion, reproduction, absorption, and elimination
B. ingestion, digestion, elimination and extinction
C. ingestion, digestion, absorption, and reproduction
D. ingestion, digestion, absorption, and elimination
Answer:
|
D
|
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|
What are different forms of the same gene?
A. nuerons
B. alleles
C. peptides
D. genomes
Answer:
|
B
|
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|
What is the wheeled robot developed by nasa to explore the surface of mars?
A. mars robot
B. mars SUV
C. mars driver
D. mars rover
Answer:
|
D
|
sciq
|
What effect does taking anabolic steroids have on testosterone production?
A. increases it
B. reduces it
C. eliminates it
D. does nothing
Answer:
|
B
|
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|
Living in a large colony requires good communication. ants communicate with chemicals called what?
A. alkalides
B. pheromones
C. peptides
D. hormones
Answer:
|
B
|
sciq
|
What complex carbohydrates are the polymers of glucose?
A. starches
B. fats
C. sugars
D. fruits
Answer:
|
A
|
sciq
|
What is the term for the shallow space above the zygomatic arch in a skull?
A. angular fossa
B. temporal fossa
C. Medium Fossa
D. distinct fossa
Answer:
|
B
|
sciq
|
What is the inner layer of skin called?
A. connective layer
B. hypodermis
C. the dermis
D. the epidermis
Answer:
|
C
|
sciq
|
Many european and asiatic elms are less susceptible to dutch elm disease than which elms?
A. caribbean
B. african
C. american
D. rican
Answer:
|
C
|
sciq
|
What does a thermometer measure?
A. oxygen
B. temperature
C. size
D. precipitation
Answer:
|
B
|
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|
What are plant-like protists called?
A. fungi
B. sponge
C. algae
D. spores
Answer:
|
C
|
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|
What is a series of processes that remove unwanted substances from water called?
A. water dilution
B. water treatment
C. water cleaning
D. water filtration
Answer:
|
B
|
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|
Original atoms are called what type of isotopes?
A. product
B. offspring
C. parent
D. component
Answer:
|
C
|
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|
What do you call an area covered with water, or possessing very soggy soil, all or part of the year?
A. wetland
B. peninsula
C. stream
D. island
Answer:
|
A
|
sciq
|
In which continent are meerkats most likely to be found?
A. africa
B. Australia
C. South America
D. North America
Answer:
|
A
|
sciq
|
What is the name of the thin layer that acts as a boundary between the stratosphere and the mesosphere?
A. spicule
B. ozone layer
C. spirogyra
D. stratopause
Answer:
|
D
|
sciq
|
What is the process of removing wastes and excess water from the body?
A. diffusion
B. excretion
C. depletion
D. ingestion
Answer:
|
B
|
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|
Which measure shows how individuals in a population are distributed, or spread throughout their area?
A. population distribution
B. geographical distribution
C. proportional distribution
D. population phase
Answer:
|
A
|
sciq
|
What is a simple carbohydrate with the chemical formula c 6 h 12 o 6 better known as?
A. glucose
B. alcohol
C. glutamate
D. fructose
Answer:
|
A
|
sciq
|
Groups of related organs form what?
A. artificial systems
B. maturation systems
C. community systems
D. organ systems
Answer:
|
D
|
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|
Each lymph organ has a different job in what system?
A. nervous
B. circulatory
C. respiratory
D. immune
Answer:
|
D
|
sciq
|
The number of protons in an atom is called what?
A. metallic number
B. atomic number
C. isotope
D. mass number
Answer:
|
B
|
sciq
|
Crevasses are found in glaciers. how do these come about?
A. man made
B. god
C. rigidity
D. from movement
Answer:
|
D
|
sciq
|
Combining nonpolar olive oil and polar vinegar yields what type of mixture?
A. homogeneous
B. heterogeneous
C. omnigeneous
D. amorphous
Answer:
|
B
|
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|
If no conclusion is reached after an experiment, the scientist may retest what?
A. hypothesis
B. materials
C. suggestions
D. conclusion
Answer:
|
A
|
sciq
|
What builds up in an artery and reduces blood flow?
A. calcium deposits
B. surface tension
C. plaque
D. pressure
Answer:
|
C
|
sciq
|
Compounds with metals and nonmetals sharing electrons are known as what kinds of compounds?
A. eons
B. acids
C. atoms
D. ions
Answer:
|
D
|
sciq
|
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