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All dinosaurs (except those which led to birds) went extinct at the end of which period?
A. cretaceous
B. Jurassic
C. Tertiary
D. Paleogene
Answer:
|
A
|
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|
What is destroying the layer of good ozone?
A. air pollution
B. greenhouse gas
C. water pollution
D. climate change
Answer:
|
A
|
sciq
|
In which state does matter need to be for nuclear fusion?
A. plasma state
B. cells state
C. solid state
D. gaseous state
Answer:
|
A
|
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|
Just as salty taste involves perception of sodium ions in saliva, what taste correlates with presence of glucose?
A. sour
B. bitter
C. sweet
D. salty
Answer:
|
C
|
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|
How is eye color in humans determined?
A. multiple genes
B. random chance
C. by the father
D. temperature of the womb
Answer:
|
A
|
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|
What term is given to flatworms because they lack a body cavity?
A. sporozoans
B. pores
C. acoelomates
D. sporazoa
Answer:
|
C
|
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|
Some soil water can flow through easily. what kind of soil is this?
A. permeable
B. dense
C. porous
D. Stationary
Answer:
|
A
|
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|
What is contained in the cavity of a long bone's central shaft?
A. cells
B. blood
C. marrow
D. calcium
Answer:
|
C
|
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|
Bacterial contamination of foods can lead to digestive problems called what?
A. cancer
B. food poisoning
C. the flu
D. butterflies in your stomach
Answer:
|
B
|
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|
What can be looked at to see a record of how horses evolved?
A. pattern records
B. fossil records
C. erosion records
D. carbon dating
Answer:
|
B
|
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|
What natural destructive element cuts away at rock forming river valleys?
A. lava
B. sediment
C. water
D. air
Answer:
|
C
|
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|
What do we call an interruption in the normal conduction pathway of the heart?
A. infarction
B. heart block
C. heartburn
D. heart attack
Answer:
|
B
|
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|
Mixtures that have the same composition throughout are known as what kinds of mixtures?
A. contiguous
B. homogeneous
C. heterogeneous
D. zygomatic
Answer:
|
B
|
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|
The wavelength of a what type of wave can be measured as the distance between two adjacent compressions?
A. vertical
B. horizontal
C. longitudinal
D. lateral
Answer:
|
C
|
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|
What kind of muscle is found in the heart?
A. cardiac
B. respiratory
C. pulminary
D. cord
Answer:
|
A
|
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|
Streamlines are smooth and continuous when flow is laminar, but break up and mix when flow is what?
A. atmospheric
B. volcanic
C. turbulent
D. slow
Answer:
|
C
|
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|
What does water treatment do to water?
A. increases volume
B. restores bacteria
C. adds flavor
D. removes unwanted substances
Answer:
|
D
|
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|
What is named after the type of enzyme they interact with in the cell?
A. oxygen proteins
B. nitrogen proteins
C. function proteins
D. receptor proteins
Answer:
|
D
|
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|
What types of genes encode transcription factors?
A. glycosyl transferases
B. rohail genes
C. isozyme genes
D. homeobox genes
Answer:
|
D
|
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|
What factor largely determines the distinguishing features of terrestrial biomes?
A. climate
B. migration
C. density
D. sea level
Answer:
|
A
|
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|
What is the term for vascular plants that reproduce with seeds?
A. strain plants
B. mother plants
C. Reproductive Plants
D. seed plants
Answer:
|
D
|
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|
What is thought to be the oldest eukaryotes?
A. amoebas
B. arthropods
C. prokaryotes
D. protists
Answer:
|
D
|
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|
Which landmark book on evolution via natural selection did charles darwin publish in 1859?
A. on various kinds of animals
B. on the origin of species
C. on the ethnic of species
D. on the origin of mammals
Answer:
|
B
|
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|
Archaeans help break down sewage in waste treatment plants, so they fulfill what important role?
A. consumers
B. pollenation
C. producers
D. decomposer
Answer:
|
D
|
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|
If an atom gains electrons, it becomes what?
A. anion
B. neutral
C. a cation
D. an ion
Answer:
|
D
|
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|
The formula mass of a covalent compound is also called the what?
A. ionic mass
B. atomic mass
C. nucleus mass
D. molecular mass
Answer:
|
D
|
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|
Both pathways that isolate a population reproductively in some form, allopatric and sympatric describe what, which means the creation of new species?
A. bacterial
B. extinction
C. accumulation
D. speciation
Answer:
|
D
|
sciq
|
Common disease of what system include asthma, pneumonia, and emphysema?
A. the fecal system
B. the respiratory system
C. the digestive system
D. the glandular system
Answer:
|
B
|
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|
Translucent matter is matter that transmits and does what else to light?
A. reflects
B. scatters
C. absorbs
D. condenses
Answer:
|
B
|
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|
Diet correlates with the length of what organ system in vertebrates?
A. digestive
B. reproductive
C. circulatory
D. respiratory
Answer:
|
A
|
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|
What is the process of processing used material into new ones called?
A. reuse
B. remake
C. recycling
D. renew
Answer:
|
C
|
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|
What equals the mass of the object (in kilograms) times the acceleration due to gravity (9.8 m/s 2 )?
A. density
B. speed of light
C. velocity
D. weight
Answer:
|
D
|
sciq
|
Where does visible light fall in between on the electromagnetic spectrum?
A. radio and infrared
B. infrared light and ultraviolet light
C. infrared light and specific light
D. infrared light and gamma ray
Answer:
|
B
|
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|
Having polar bonds may make a covalent compound what?
A. ionic
B. polar
C. neutral
D. negatively charged
Answer:
|
B
|
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|
Shortening of muscle fibers is called what?`
A. shrinking
B. diffusion
C. diffusion
D. contraction
Answer:
|
D
|
sciq
|
About how many thunderstorms are there each year worldwide?
A. 14 million
B. 17 million
C. 23 million
D. 21 million
Answer:
|
A
|
sciq
|
What are a group of protists whose monophyly is well supported by molecular systematics?
A. euglenozoa
B. alveolates
C. sporozoans
D. mycetozoa
Answer:
|
B
|
sciq
|
What is measured by the intensity of the sound waves?
A. inputs
B. loudness
C. tone
D. pitch
Answer:
|
B
|
sciq
|
Parasitic fungi often cause illness and may eventually do what to their hosts?
A. reproduce with them
B. become them
C. kill them
D. mutate them
Answer:
|
C
|
sciq
|
Coronary heart disease is caused when what blocks coronary arteries?
A. plaque
B. carbohydrates
C. fats
D. proteins
Answer:
|
A
|
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|
Air is an example of what state of matter?
A. plasma
B. liquid
C. solid
D. gas
Answer:
|
D
|
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|
What descend from clouds in funnel-like shapes that spin violently, producing powerful winds?
A. rains
B. currents
C. hurricanes
D. tornadoes
Answer:
|
D
|
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|
What term describes the long-term, predictable atmospheric conditions of a specific area?
A. solar activity
B. wind patterns
C. climate
D. hemosphere
Answer:
|
C
|
sciq
|
Between meals, when the level of blood glucose drops below a certain point, a signal is sent to what organ saying “make more glucose"?
A. pancreas
B. kidney
C. brain
D. liver
Answer:
|
D
|
sciq
|
Where does the krebs cycle take place?
A. in the matrix
B. in the nitrogen
C. in the ozone
D. in the beam
Answer:
|
A
|
sciq
|
What state of matter is like a liquid in that particles are in contact with each other, but unlike liquids in that the intermolecular forces are strong enough to hold the particles in place?
A. plasmas
B. fluids
C. gases
D. solids
Answer:
|
D
|
sciq
|
What is the term for a natural situation which arises to physically divide organisms?
A. vicariance
B. extinction
C. reproduction
D. assimilation
Answer:
|
A
|
sciq
|
Digestion of carbohydrates is performed by several enzymes. starch and glycogen are broken down into glucose by amylase and maltase. sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and this?
A. pepsin
B. lipase
C. lactase
D. hydrolase
Answer:
|
C
|
sciq
|
What is defined as a phasic change in muscle tone?
A. spasticity
B. elasticity
C. susceptibility
D. gastrointestinal
Answer:
|
A
|
sciq
|
What is a force that opposes motion between any surfaces that are touching?
A. friction
B. vibration
C. gravity
D. tension
Answer:
|
A
|
sciq
|
What are structures that have a common function and suggest common ancestry?
A. reversible structures
B. analogous structures
C. monogamous structures
D. homologous structures
Answer:
|
D
|
sciq
|
Which type of cell division halves the number of chromosomes?
A. meiosis
B. mitosis
C. fragmentation
D. budding
Answer:
|
A
|
sciq
|
Objects in motion that return to the same position after a fixed period of time are said to be in what?
A. resonant motion
B. harmonic motion
C. kinetic motion
D. homeostasis
Answer:
|
B
|
sciq
|
What is the relationship of multiple action potentials from a single cell resulting in a significant change in the membrane potential?
A. nature summation
B. temporal summation
C. bipolar summation
D. distinct summation
Answer:
|
B
|
sciq
|
Plant cells have cell walls that are made of what?
A. tissue
B. carbonate
C. cellulose
D. nucleus
Answer:
|
C
|
sciq
|
What disease associated with smoking involves breakdown of walls of the alveoli, resulting in less gas exchange by the lungs?
A. pneumonia
B. emphysema
C. cancer
D. leukemia
Answer:
|
B
|
sciq
|
Molds and yeasts are organisms in what kingdom?
A. aquatic
B. insects
C. tissues
D. fungus
Answer:
|
D
|
sciq
|
Bacteria can be used to make cheese from milk. the bacteria turn the milk sugars into what?
A. ionic acid
B. acetic acid
C. lactic acid
D. hydrochloric acid
Answer:
|
C
|
sciq
|
Independent assortment occurs when what go to opposite poles of the cell in anaphase i?
A. ballasts
B. chromosomes
C. receptors
D. prokaryotes
Answer:
|
B
|
sciq
|
What term is used to describe an immunity that occurs after exposure to an antigen either from a pathogen or a vaccination?
A. herd immunity
B. adaptive immunity
C. variation immunity
D. autoimmunity
Answer:
|
B
|
sciq
|
Changes in temperature, ph, and exposure to chemicals may lead to permanent changes in the shape of a protein, leading to loss of function known as what?
A. digestion
B. fermentation
C. bioturbation
D. denaturation
Answer:
|
D
|
sciq
|
What term is used to describe phages capable of using both modes of replicating within a bacterium?
A. bacteriophage
B. moderate phages
C. lambda phage
D. temperate phages
Answer:
|
D
|
sciq
|
Many observatories are built on high mountains to avoid interference from what?
A. the atmosphere
B. artificial light
C. animal life
D. airplanes
Answer:
|
A
|
sciq
|
Like earth, the moon has a distinct crust, mantle, and what else?
A. polarity
B. temperature
C. core
D. atmosphere
Answer:
|
C
|
sciq
|
Reflection, refraction, and diffraction are examples of what type of interaction?
A. waves
B. Oscillations
C. winds
D. Currents
Answer:
|
A
|
sciq
|
What type of molecules are found in the hydration shell of a dissolved ion?
A. oxygen
B. carbon
C. iron
D. water
Answer:
|
D
|
sciq
|
Tuataras, lizards, and snakes are members of what subclass of reptiles?
A. dinosaurs
B. arthropods
C. lepidosaurs
D. staurikosaurus
Answer:
|
C
|
sciq
|
What do waves deposit in relatively quiet areas along a shore?
A. snow
B. mud
C. fish
D. sand
Answer:
|
D
|
sciq
|
What is the smallest unit of structure and function of all living organisms?
A. atom
B. particle
C. cell
D. proton
Answer:
|
C
|
sciq
|
What kind of fertilization do birds have?
A. deep fertilization
B. asexual
C. internal fertilization
D. sensitive fertilization
Answer:
|
C
|
sciq
|
What is the term for an organism, or single living thing?
A. loner
B. individual
C. unique
D. single-celled organism
Answer:
|
B
|
sciq
|
Which of newton's laws states that the quantity of angular momentum in a closed system is fixed?
A. fourth conservation law
B. second conservation law
C. third conservation law
D. sixth conservation law
Answer:
|
C
|
sciq
|
What is the force that slows down or stops motion?
A. resistance
B. thrust
C. friction
D. tension
Answer:
|
C
|
sciq
|
What is it called when poles are in opposite positions?
A. polar effect
B. demagnetization
C. reversed bonding
D. reversed polarity
Answer:
|
D
|
sciq
|
What is a feature that prokaryotes lack?
A. plasma
B. epidermis
C. cell wall
D. nucleus
Answer:
|
D
|
sciq
|
They had demonstrated that particles smaller than bacteria cause what?
A. damage
B. flight
C. blood
D. disease
Answer:
|
D
|
sciq
|
The wrist and base of the hand are formed by what series of small bones arranged in distal and proximal rows?
A. cranial
B. carpal
C. patella
D. ribs
Answer:
|
B
|
sciq
|
What does an underwater spider use to breathe and keep alive?
A. metallic air bubble
B. gills
C. forehead air bubble
D. shiny air bubble
Answer:
|
D
|
sciq
|
Amphibians are ectothermic vertebrates that divide their time between freshwater and what else?
A. terrestrial habitats
B. saltwater
C. deserts
D. arboreal habitats
Answer:
|
A
|
sciq
|
Water plus other substances makes what?
A. element
B. mixture
C. solution
D. oil
Answer:
|
C
|
sciq
|
What type of polarization does a negative object create>
A. simple polarization
B. negative polarization
C. common polarization
D. opposite polarization
Answer:
|
D
|
sciq
|
What type of particles can a beta particle be?
A. anode or positron
B. electron or positron
C. cytoplasm or positron
D. diode or positron
Answer:
|
B
|
sciq
|
The heme parts of a hemoglobin molecule bind with what element?
A. oxygen
B. nitrogen
C. carbon
D. hydrogen
Answer:
|
A
|
sciq
|
What is the term for flowering seed plants?
A. perennials
B. spores
C. angiosperms
D. gymnosperms
Answer:
|
C
|
sciq
|
Do nonvascular or vascular plants have a dominant sporophyte generation?
A. perennial
B. deciduous
C. vascular
D. nonvascular
Answer:
|
C
|
sciq
|
In mismatch repair, other enzymes remove and replace incorrectly paired nucleotides that have resulted from what?
A. interaction errors
B. evolution errors
C. typing errors
D. replication errors
Answer:
|
D
|
sciq
|
What two structures are found on mars?
A. Mountains and Creeks
B. Trees and Canyons
C. geysers and canyons
D. volcanoes and canyons
Answer:
|
D
|
sciq
|
What substances dissociate into ions when dissolved in water?
A. ionic
B. solvent
C. isotopes
D. magnetic
Answer:
|
A
|
sciq
|
Organisms that depend on other organisms for food play what role in the food chain?
A. fungus
B. consumer
C. producer
D. plant
Answer:
|
B
|
sciq
|
What is the growing root tip protected by?
A. root cap
B. root flap
C. tip cap
D. root hinge
Answer:
|
A
|
sciq
|
Ocean water appears cyan because microbes in the water preferentially absorb what color of light?
A. yellow
B. blue
C. red
D. green
Answer:
|
C
|
sciq
|
Both energy and heat can be expressed in units of what?
A. ohms
B. amperes
C. joules
D. velocities
Answer:
|
C
|
sciq
|
In fact, when sitting in the sun, many ectothermic lizards have higher body temperatures than what?
A. insects
B. primates
C. mammals
D. carnivores
Answer:
|
C
|
sciq
|
In binary fission how many times does a cell split?
A. six
B. two
C. one
D. four
Answer:
|
B
|
sciq
|
What do nonvascular plants reproduce with?
A. photosynthesis
B. toxins
C. vascular plants
D. spores
Answer:
|
D
|
sciq
|
The most powerful or influential individual in a group is sometimes called what?
A. gamma
B. dominant
C. superior
D. beta
Answer:
|
B
|
sciq
|
What is the first stage of cellular respiration?
A. glycolysis
B. amniocentesis
C. photosynthesis
D. hydrolysis
Answer:
|
A
|
sciq
|
In which direction does heat always flow through objects?
A. from left to right
B. from low to high
C. from hotter to cooler
D. from cooler to hotter
Answer:
|
C
|
sciq
|
Like sharks, nearly the entire human skeleton during a specific pre-birth developmental stage is made of what connective tissue?
A. collagen
B. chloroplasm
C. cartilage
D. phloem
Answer:
|
C
|
sciq
|
When this forms underground, volcanoes rise?
A. magma
B. CO2
C. soil
D. pumice
Answer:
|
A
|
sciq
|
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