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What layer is below the lithosphere and in the upper mantle?
A. hydrosphere
B. asthenosphere
C. troposphere
D. magnetosphere
Answer: | B |
What are lipopolysaccharide components of the outer membrane of gram-negative bacteria?
A. endotoxins
B. reactants
C. hormones
D. pathogens
Answer: | A |
In aquatic communities, the main producers are photosynthetic protists and what?
A. eukaryotes
B. crustaceans
C. prokaryotes
D. arthropods
Answer: | C |
How does the liquid in a thermometer respond to heat or cold?
A. expands or contracts
B. disappears
C. rises or vaporizes
D. freezes or boils
Answer: | A |
In most fish, where does the embryo develop in relation to the mother's body?
A. Eggs
B. outside
C. water
D. inside
Answer: | B |
What is the name of the life stage when a child becomes sexually mature?
A. adulthood
B. adolescence
C. puberty
D. maturity
Answer: | C |
Cytokinesis divides what part of the cell into two distinctive cells?
A. cell wall
B. DNA
C. nucleus
D. cytoplasm
Answer: | D |
What is it called when a liquid displays more attraction between the liquid particles than attraction between the liquid and the glass?
A. flexion
B. stability
C. cohesion
D. tension
Answer: | C |
In what type of mining must tunnels be blasted into the rock so that miners and equipment can get to the ore?
A. strip mining
B. open-pit mining
C. gold mining
D. underground mining
Answer: | D |
What kind of energy is released when the thermochemical reaction of a campfire converts wood to carbon dioxide and water?
A. light
B. smoke
C. ultraviolet
D. heat
Answer: | D |
Like the mitochondria, chloroplasts have their own dna and ribosomes, but chloroplasts have an entirely different function. chloroplasts are plant cell organelles that carry out what?
A. digestion
B. reproduction
C. growth
D. photosynthesis
Answer: | D |
While normal light microscopes can magnify objects up to about 1,500 times, what advanced instruments can magnify objects up to 1,000,000 times?
A. micro microscopes
B. magnetic microscopes
C. electric microscopes
D. electron microscopes
Answer: | D |
What kind of energy does pyruvate have a lot of?
A. nuclear
B. gravitational
C. thermal
D. chemical
Answer: | D |
What type of landscape has grasslands with scattered trees, are hot and have extensive dry seasons along with fire?
A. tundra
B. deserts
C. savannas
D. arctic
Answer: | C |
What may be lost when waves travel through matter, but not when they travel through space?
A. frequency
B. matter
C. energy
D. threshold
Answer: | C |
Where does mechanical digestion begin?
A. mouth
B. stomach
C. intestines
D. brain
Answer: | A |
How does the sun generate energy?
A. matter multiplication
B. nuclear fusion
C. certain fusion
D. atomic division
Answer: | B |
What stored form of energy is made up of glycerol and three fatty acid chains?
A. hydrocarbons
B. carbohydrates
C. triglycerides
D. particulates
Answer: | C |
What do jellyfish give off to startle possible predators?
A. plankton
B. energy
C. light
D. electricity
Answer: | C |
What is an example of a metaloid element?
A. silicon
B. argon
C. chlorine
D. fluorine
Answer: | A |
Scientists use a quantity called __________ as a measure of disorder, or randomness.
A. entropy
B. motion
C. vector count
D. chance level
Answer: | A |
Niche refers to the role a species plays in what?
A. migration
B. the habitat
C. the ecosystem
D. reproduction
Answer: | C |
An irreversible increase in size is known as?
A. mass
B. strength
C. growth
D. volume
Answer: | C |
Bacterial contamination of foods can lead to digestive problems, an illness known as what?
A. food poisoning
B. headache
C. ulcers
D. acid reflux
Answer: | A |
All combustion reactions are what type of reactions?
A. reversible
B. flammable
C. geothermal
D. exothermic
Answer: | D |
What produces microspores that develop into pollen grains containing male gametophytes?
A. leaves
B. stamens
C. stems
D. petals
Answer: | B |
When a star's core collapses inward while the outer layers spread and cool, what "colorful" celestial body forms?
A. green giant
B. white giant
C. red giant
D. blue giant
Answer: | C |
Timber, obtained from trees that can be replanted to replace those that are cut down, is an example of what type of resource?
A. renewable
B. fossil fuel
C. mineral
D. nonrenewable
Answer: | A |
What type of blood does the right side of the heart collect and then pump to the lungs?
A. nitrogen-poor blood
B. nitrogen-rich blood
C. oxygen-rich blood
D. oxygen-poor blood
Answer: | D |
What elements have the highest attraction for electrons?
A. carbons
B. nonmetals
C. metals
D. gases
Answer: | B |
What is the layman's term for mammals raising their hair with tiny muscles in the skin, something that is automatic in humans sensing cold?
A. goosebumps
B. spine tingling
C. follicles
D. hypothermia
Answer: | A |
What are ring-shaped hydrocarbons called?
A. curved hydrocarbons
B. cyclic hydrocarbons
C. cylindrical hydrocarbons
D. reverse hydrocarbons
Answer: | B |
What increases in processes in which solid or liquid reactants form gaseous products and when solid reactants form liquid products?
A. respiration
B. glucose
C. entropy
D. evaporation
Answer: | C |
How many pairs of legs do arachnids have?
A. 4
B. 8
C. 6
D. ten
Answer: | A |
Besides the uppermost mantle, what else is the lithosphere composed of?
A. surface
B. crust
C. outer core
D. inner core
Answer: | B |
What is another term for dry ice?
A. liquid nitrogen
B. solid carbon dioxide
C. ice crystals
D. carbonated ice
Answer: | B |
Name the process that produces many copies of a certain gene.
A. gene multiplication
B. gene cloning
C. gene diversion
D. gene addition
Answer: | B |
Rupture or blockage of arteries in the head is the usual cause of what condition?
A. stroke
B. migraine headache
C. heart attack
D. heart disease
Answer: | A |
What type of lines run next to each other?
A. perpendicular lines
B. fault lines
C. crater lines
D. contour lines
Answer: | D |
What type of light sensing organs do scaophopoda have?
A. cilia
B. radula
C. setae
D. antennae
Answer: | B |
What kind of cleavage do mammalian eggs exhibit?
A. cocklebur
B. Meroblastic
C. holoblastic
D. spicule
Answer: | C |
What is the name of the process for delivering water to crops?
A. drainage
B. irrigation
C. bilge
D. reclamation
Answer: | B |
What is the process in which a liquid boils and changes to a gas?
A. sublimation
B. melting
C. vaporization
D. freezing
Answer: | C |
What are the two most common common ways that brain and spinal cord injuries occur?
A. sports and household accidents
B. car crashes and falls
C. car crashes and athletic activities
D. falls and surgical error
Answer: | C |
What is the largest planet in the solar system?
A. mars
B. saturn
C. jupiter
D. pluto
Answer: | C |
What are elements required in very small amounts?
A. minerals
B. pollutants
C. macronutrients
D. micronutrients
Answer: | D |
What can be calculated by multiplying an object’s mass in kilograms (kg) by its velocity in meters per second (m/s)?
A. height
B. ground speed
C. momentum
D. energy
Answer: | C |
What will happen to a rock when it's under tremendous stress?
A. it will solidify
B. it will rebound
C. it will fracture
D. it will slow
Answer: | C |
Very large stars eventually become what extremely dense space regions, which are so dense that no light can escape from them?
A. dark matter
B. moons
C. black holes
D. worm holes
Answer: | C |
Which theory suggests plant species richness increases with island size?
A. island ecosystem model
B. island biology model
C. island symbolic model
D. island equilibrium model
Answer: | D |
What state of hydrogen can be predicted based on the atoms to which it is bonded?
A. precipitation
B. evaporation
C. oxidation
D. condensation
Answer: | C |
What occurs when there is little to no rain in a period of time?
A. floods
B. hurricanes
C. pollution
D. droughts
Answer: | D |
At any specific time, the rate at which a reaction is proceeding is known as its what?
A. immediate rate
B. emitted rate
C. instantaneous rate
D. spontaneous rate
Answer: | C |
The skin is a familiar organ made of what kind of tissue?
A. recurrent tissue
B. innate tissue
C. aberrant tissue
D. epithelial tissue
Answer: | D |
Evolution that occurs over a short period of time is known as what?
A. short term evolution
B. relatedness
C. microevolution
D. pseudoevolution
Answer: | C |
What do osteoblasts secrete that mineralizes to become bone matrix?
A. spongin
B. calcium
C. carbon
D. collagen
Answer: | D |
Atoms that have gained electrons and become negatively charged are called what?
A. cations
B. negative ions
C. negative atoms
D. anions
Answer: | B |
Snakes are which type of animal?
A. herbivorous
B. omnivores
C. carnivorous
D. vegivors
Answer: | C |
Cancer occurs most often in adults over what age?
A. twenty
B. thirty
C. fifty
D. seventy
Answer: | C |
Mammals are either herbivores, carnivores or what?
A. vegetarians
B. nematodes
C. omnivores
D. decomposers
Answer: | C |
What paired human organs play a vital role in maintaining homeostasis?
A. kidneys
B. ears
C. lungs
D. eyes
Answer: | A |
What is the process in which glucose is made using energy in light called?
A. photosynthesis
B. photogenesis
C. glucosynthesis
D. gluconeogenesis
Answer: | A |
What zone is outside the radiative zone?
A. convection zone
B. peripheral zone
C. activation zone
D. diffusion zone
Answer: | A |
What do you call the temperature at which a liquid boils and starts changing to a gas?
A. melting point
B. vapor point
C. transformation point
D. boiling point
Answer: | D |
The distinctive appearance of what tissue is due to polysaccharides called chondroitin sulfates?
A. bone
B. collagen
C. membrane
D. cartilage
Answer: | D |
In the humid subtropical climate, summers are ____ but winters are very cold.
A. windy
B. dry
C. long
D. wet
Answer: | D |
What are found primarily in lines around the edges of some continents?
A. volcanoes
B. glaciers
C. Reefs
D. earthquakes
Answer: | D |
What is another name for trisomy 21?
A. Fragile X
B. down syndrome
C. cystic fibrosis
D. Tay-Sachs Disease
Answer: | B |
Which part of the brain regulates the rate of breathing?
A. brain stem
B. brain charge
C. brain stem
D. brain uptake
Answer: | A |
Light with the longest wavelengths is called what?
A. X-rays
B. infrared light
C. UV light
D. visible light
Answer: | B |
Which gas do people exhale during each breath?
A. oxygen
B. carbon dioxide
C. carbon monoxide
D. nitrogen
Answer: | B |
Nonvascular plants such as liverworts, hornworts, and mosses lack what three typical plant features?
A. roots, stems, leaves
B. chloroplasts, stems, flowers
C. flowers, leaves, bark
D. roots, leaves, chloroplasts
Answer: | A |
Much of the iron produced is refined and converted into what?
A. steel
B. plastic
C. wood
D. sugar
Answer: | A |
What can be formed by converging light rays behind a lens, onto a piece of film?
A. a photograph
B. a prism
C. a kaleidoscope
D. a mirror
Answer: | A |
What is the star-like structure inside the paramecia?
A. the elongated vacuole
B. the contractile vacuole
C. the reflex vacuole
D. the baré vacuole
Answer: | B |
What is the study of the chemical elements necessary for plant growth called?
A. phototropism
B. photosynthesis
C. plant nutrition
D. plant propagation
Answer: | C |
Both alpha and beta decay change the number of what in an atom's nucleus?
A. protons
B. Gamma decay
C. neutrons
D. electrons
Answer: | A |
What types of living things are divided into nonvascular and vascular groupings?
A. organs
B. plants
C. animals
D. mammals
Answer: | B |
What can exposure to chemical or biological agents cause later in life?
A. spontaneous mutation
B. an acquired immunodeficiency
C. regression
D. adaptation
Answer: | B |
What direction are sediments deposited?
A. diagonally
B. magnetic poles
C. horizontally
D. vertically
Answer: | C |
When the air temperature reaches the dew point, water vapor starts to do what?
A. dissipate
B. condense
C. evaporate
D. germinate
Answer: | B |
What do you call the metal elements listed below the periodic table?
A. shift metals
B. rare metals
C. process metals
D. transition metals
Answer: | D |
Each silicon atom shares how many valence electrons with other silicon atoms in a crystal?
A. ten
B. three
C. four
D. five
Answer: | C |
What is produced by the reaction of metal oxide with water?
A. soluble metal hydroxides
B. hydrogen gas
C. heat energy
D. rust
Answer: | A |
Which type of weathering causes changes int he rocks materials, chemical or mechanical?
A. liquid
B. nuclear
C. mineral
D. chemical
Answer: | D |
What type of rocks form from sediments that are cemented and compacted?
A. crystalline
B. granite
C. limestone
D. sedimentary
Answer: | D |
What is the common term for solid carbon dioxide, which is used as a coolant?
A. antifreeze
B. dry ice
C. blue ice
D. liquid nitrogen
Answer: | B |
What is the most common type of joint in the human body?
A. movable joints
B. dorsal joints
C. proximal joints
D. transverse joints
Answer: | A |
What kind of relationship exists between living things that depend on the same resources?
A. parasitic
B. symbiotic
C. antagonistic
D. competition
Answer: | D |
Latitude plays an important role in determining what in a region?
A. migration
B. drought
C. landscape
D. climate
Answer: | D |
A very small artery that leads to a capillary is known as what?
A. arterium
B. vein
C. capillary junction
D. arteriole
Answer: | D |
What kind of systems use fluid to transmit pressure and increase force?
A. plumbing systems
B. hydraulic systems
C. thermal systems
D. electromagnetic systems
Answer: | B |
What organ interprets what our sensory organs sense?
A. thyroid
B. lungs
C. nerves
D. brain
Answer: | D |
Gametes are products through meiosis in which organs?
A. cones
B. hormones
C. kidneys
D. gonads
Answer: | D |
Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by what?
A. Slow rotation
B. unusually rapid rotation
C. extremely rapid rotation
D. particularly rapid rotation
Answer: | C |
A changing magnetic field produces an electric current in what?
A. matter
B. organ
C. substance
D. a conductor
Answer: | D |
What do plants do to prevent water loss at night?
A. open their petals
B. close their leaves
C. close their stems
D. shed their petals
Answer: | B |
What term describes a colloidal dispersion of a liquid in either a liquid or a solid?
A. emulsion
B. compound
C. mix
D. suspension
Answer: | A |
What evidence is there that mt. everest was once at the bottom of a sea?
A. glaciers
B. skulls
C. corals
D. fossils
Answer: | D |
Because atoms have equal numbers of positive protons and negative electrons, what kind of electric charge do they possess?
A. negative
B. positive
C. none
D. neutral
Answer: | D |
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