subject
float64 | question
stringlengths 78
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|---|---|---|
null | Question: What determines the length and thickness of dna chromosomes?
Options:
A. number of chromosomes
B. type of dna
C. degree of rna coiling
D. degree of dna coiling
Answer: | D |
null | Question: Volcanoes are termed active, dormant, or extinct depending on the possibility of the presence of what in chamber structures?
Options:
A. magma
B. coal
C. water
D. sulpher
Answer: | A |
null | Question: Worldwide, viruses seem to play a role in what percentage of the cases of human cancer?
Options:
A. 5%
B. 20 %
C. 15%
D. +.15 %
Answer: | C |
null | Question: The contents of which organ are mixed every 20 seconds?
Options:
A. kidney
B. the metabolism
C. the stomach
D. pancreas
Answer: | C |
null | Question: Living organisms are comprised of organic compounds, which are molecules built around what element?
Options:
A. oxygen
B. silicon
C. helium
D. carbon
Answer: | D |
null | Question: What do you call plastids that contain the green pigment chlorophyll?
Options:
A. Gerontoplasts
B. Leucoplasts
C. chloroplasts
D. Chromoplasts
Answer: | C |
null | Question: Starch is a large, complex carbohydrate made of thousands of _____ joined together?
Options:
A. glucose units (monomers)
B. glucose orders ( monomers )
C. glucose divisions ( monomers )
D. glucose partitions ( monomers )
Answer: | A |
null | Question: Where is the fruiting body normally produced in relation to the food source?
Options:
A. at the surface
B. at the root
C. in the soil
D. underneath the surface
Answer: | A |
null | Question: Major climate types are based on what two things?
Options:
A. environment & precipitation
B. temperature & precipitation
C. oxygen & precipitation
D. topography & temperature
Answer: | B |
null | Question: What is the term for the use of radioactive decay to estimate the ages of fossils and rock?
Options:
A. microwave theory
B. radioactive illustrating
C. radioactive dating
D. isotope test
Answer: | C |
null | Question: Most receptors in the dermis are encapsulated by what?
Options:
A. pathogenic tissue
B. tendons
C. bone tissue
D. connective tissue
Answer: | D |
null | Question: What tool is useful for studying the ocean floor because the environment is remote and underwater?
Options:
A. scale
B. microscope
C. sonar
D. telescope
Answer: | C |
null | Question: The peripheral nervous system has major nerves that travel through every part of the body except which two places?
Options:
A. muscles and brain
B. lungs and spinal cord
C. brain and spinal cord
D. brain and heart
Answer: | C |
null | Question: What important aspect of the scientific method is a suggested explanation for an event, which can be tested?
Options:
A. string theory
B. scientific control
C. hypothesis
D. independent variable
Answer: | C |
null | Question: What is it called when breaks in bone occur that is usually caused by excessive stress on the bone?
Options:
A. fractures
B. faults
C. fragments
D. ruptures
Answer: | A |
null | Question: What filters pathogens and worn out red blood cells from the blood?
Options:
A. the bladder
B. the spleen
C. the stomach
D. the pancreas
Answer: | B |
null | Question: If two chlorine atoms share their unpaired electrons by making a covalent bond and forming cl2, they can each complete their what?
Options:
A. electron shell
B. valence shell
C. radiative shell
D. hypothesized shell
Answer: | B |
null | Question: The cells of all protists have a what?
Options:
A. nucleus
B. cell walls
C. protons
D. argon
Answer: | A |
null | Question: What are the key cells of an immune response?
Options:
A. keratinocytes
B. histiocytes
C. erythrocytes
D. lymphocytes
Answer: | D |
null | Question: Different colors of light differ in terms of which important attribute?
Options:
A. lenses
B. wavelengths
C. prisms
D. frequencies
Answer: | B |
null | Question: Each microspore develops into a pollen grain containing a male what?
Options:
A. progesterone
B. zygote
C. sperm
D. gametophyte
Answer: | D |
null | Question: Most liquid freshwater is under the ground in layers of what?
Options:
A. sand
B. rock
C. soil
D. forest
Answer: | B |
null | Question: Which vertebrates were the first with four limbs?
Options:
A. reptiles
B. birds
C. amphibians (or tetrapods)
D. bony fishes
Answer: | C |
null | Question: 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?
Options:
A. follicles
B. hypothermia
C. spine tingling
D. goosebumps
Answer: | D |
null | Question: What type of layers do animals' tissues develop from?
Options:
A. embryonic
B. dermic
C. cytoplasm
D. transgenic
Answer: | A |
null | Question: What is the diffusion of water through a semipermeable membrane down its concentration gradient
Options:
A. mirrors
B. nutrients
C. Permable
D. osmosis
Answer: | D |
null | Question: What hormone, which is associated with luteinizing hormone and male sexuality, helps bring about physical changes in puberty?
Options:
A. estrogen
B. steroids
C. epinephrine
D. testosterone
Answer: | D |
null | Question: What term refers to the sequence of community and ecosystem changes after a disturbance?
Options:
A. ecological succession
B. disturbance succession
C. progressions
D. physiological succession
Answer: | A |
null | Question: What living things have cell walls containing cellulose and plastids such as chloroplasts?
Options:
A. reptiles
B. plants
C. animals
D. mammals
Answer: | B |
null | Question: Moist skin distinguishes frogs from what animal with dry, bumpy skin?
Options:
A. snakes
B. turtles
C. toads
D. newts
Answer: | C |
null | Question: What is stacked in layers in "layer cake geology"?
Options:
A. sediment
B. horizontal stata
C. soil
D. rock stata
Answer: | D |
null | Question: For most of a star’s life, hydrogen atoms fuse to form what?
Options:
A. helium atoms
B. ionic atoms
C. gas atoms
D. neon atoms
Answer: | A |
null | Question: What should a pregnant woman avoid while pregnant?
Options:
A. vitamins
B. toxic substances
C. rest and relaxation
D. healthy food
Answer: | B |
null | Question: Composite cones are steep-sided, cone-shaped types of what, which produce explosive eruptions?
Options:
A. volcanoes
B. craters
C. mountains
D. earthquakes
Answer: | A |
null | Question: A sprain is a strain or tear in what part of the body?
Options:
A. torso
B. stomach
C. a ligament
D. skeleton
Answer: | C |
null | Question: What is the primary cause of air movement in the troposphere?
Options:
A. differences in heating
B. asteroids
C. the ozone layer
D. solar winds
Answer: | A |
null | Question: What animal group can be found in every environment on earth, but primarily in the warm and moist tropics?
Options:
A. rodent
B. insect
C. horses
D. reptiles
Answer: | B |
null | Question: What two types of communication do both humans and birds use primarily?
Options:
A. material and auditory
B. visual and auditory
C. interaction and auditory
D. sensual and auditory
Answer: | B |
null | Question: What type of plants have vascular tissue but do not have seeds?
Options:
A. ofen vascular plants
B. starchy vascular plants
C. seedless vascular plants
D. rocky vascular plants
Answer: | C |
null | Question: What are the most common seedless vascular plants?
Options:
A. weeds
B. ferns
C. trees
D. grasses
Answer: | B |
null | Question: What controls what goes in and out of a cell?
Options:
A. the plasma membrane
B. the mitochondria
C. the cilia
D. the nucleus
Answer: | A |
null | Question: Squamata is the largest order of what broad animal group, and includes lizards and snakes?
Options:
A. mammals
B. spiny fishes
C. amphibians
D. reptiles
Answer: | D |
null | Question: Internal functions are coordinated and regulated so that the internal environment of a living thing is relatively constant, referred to as what?
Options:
A. homeostasis
B. stabilizer
C. homogenesis
D. hypothesis
Answer: | A |
null | Question: How can you calculate the density of matter?
Options:
A. by dividing its volume by its mass
B. by multiplying its mass by its volume
C. by dividing its mass by its volume
D. by subtracting mass from volume
Answer: | C |
null | Question: What were the first particles with mass to be directly confirmed to have the wavelength proposed by de broglie?
Options:
A. protons
B. negatrons
C. ions
D. electrons
Answer: | D |
null | Question: Electrons flow through the electrolyte from the ________ to __________ electrode.
Options:
A. negative; positive
B. positive; negative
C. neutral; negative
D. negative; neutral
Answer: | A |
null | Question: What broad group of animals - which includes rats, dogs and camels - have highly developed brains and often perform work for humans?
Options:
A. mammals
B. reptiles
C. amphibians
D. arachnids
Answer: | A |
null | Question: Natural selection can only take place if there is variation, or differences, among individuals in a population. importantly, these differences must have some genetic basis; otherwise, the selection will not lead to change in this?
Options:
A. next generation
B. spontaneous mutation
C. mass extinction
D. fertilization
Answer: | A |
null | Question: What is said to occur when both traits appear in a heterozygous offspring?
Options:
A. pollenation
B. identical twins
C. codominance
D. xenophobia
Answer: | C |
null | Question: What are made from highly reflective metal that is applied to a curved or flat piece of glass?
Options:
A. prisms
B. lenses
C. kaleidoscopes
D. mirrors
Answer: | D |
null | Question: How are protozoa that cause giardiasis spread?
Options:
A. starch and water
B. lakes and rivers
C. insects
D. food and water
Answer: | D |
null | Question: Which is the final step of cell division?
Options:
A. Mitosis
B. genesys
C. electrolysis
D. cytokinesis
Answer: | D |
null | Question: What type of reproduction only involves one parent?
Options:
A. organic
B. primitive
C. binary
D. asexual
Answer: | D |
null | Question: What is necessary in a person who wishes to play wind instruments?
Options:
A. vocal cords
B. powerful lips
C. healthy lungs
D. strong hands
Answer: | C |
null | Question: Lattice energy cannot be measured directly. what is its calculation based on?
Options:
A. chemical reactions
B. microscopic inspection
C. change in temperature
D. measured energy changes
Answer: | D |
null | Question: What do you call a group of cells of the same kind that performs the same function?
Options:
A. nucleus
B. organ system
C. tissue
D. molecule
Answer: | C |
null | Question: Featuring a stalk-like filament that ends in an anther, what is the male reproductive organ in a flower?
Options:
A. petals
B. cones
C. angiosperms
D. stamen
Answer: | D |
null | Question: What causes continents to drift closer to the poles or the equator?
Options:
A. earthquakes
B. time
C. plate tectonics
D. plate movements
Answer: | D |
null | Question: What is continuously changing within a circuit in an analog signal?
Options:
A. energy
B. voltage
C. frequency
D. amplitude
Answer: | B |
null | Question: During strenuous exercise our muscles perform what kind of fermentation?
Options:
A. residual acid
B. excessive acid
C. lactic acid
D. nitric acid
Answer: | C |
null | Question: Where do most cnidarians live?
Options:
A. hills
B. rocks
C. ocean
D. grass
Answer: | C |
null | Question: Which two systems together provide support to the body and allow for movement?
Options:
A. skeletal and muscular
B. skeletal and digestive
C. vascular and muscular
D. muscular and nervous
Answer: | A |
null | Question: What mineral is stored and is maintained at normal levels in blood by the skeletal system?
Options:
A. magnesium
B. potassium
C. selenium
D. calcium
Answer: | D |
null | Question: What is the amorphous form of carbon prepared by the incomplete combustion of natural gas?
Options:
A. dioxide black
B. liquid black
C. carbon black
D. dark black
Answer: | C |
null | Question: A chain of what structures form as an oceanic plate moves over a hotspot?
Options:
A. outcrops
B. volcanoes
C. earthquakes
D. ridges
Answer: | B |
null | Question: The basic voltaic cell variations are the dry cell and the what?
Options:
A. lead flood battery
B. lead storage battery
C. lead electricity battery
D. positive terminal
Answer: | B |
null | Question: Most tissues regulated by the autonomic nervous system receive both sympathetic and parasympathetic input from?
Options:
A. parasympathetic neurons
B. peristaltic neurons
C. postganglionic neurons
D. Chemosensory center
Answer: | C |
null | Question: What make us sick when they become human parasites?
Options:
A. larvae
B. viruses
C. detritus
D. protozoa
Answer: | D |
null | Question: What is the term for the early growth and development of a plant embryo inside a seed?
Options:
A. rumination
B. fertilization
C. germination
D. secretion
Answer: | C |
null | Question: What type of cell division produces gametes?
Options:
A. mitosis
B. meiosis
C. mutations
D. apoptosis
Answer: | B |
null | Question: Calculations are described showing conversions between molar mass and what for gases?
Options:
A. volume
B. weight
C. length
D. density
Answer: | D |
null | Question: The two parameters used to measure changes in ecosystems are resistance and what related factor?
Options:
A. strength
B. variation
C. acceptability
D. resilience
Answer: | D |
null | Question: What is the name of the life stage when a child becomes sexually mature?
Options:
A. maturity
B. adolescence
C. adulthood
D. puberty
Answer: | D |
null | Question: When a warm air mass becomes trapped between two cold air masses, what type of front occurs?
Options:
A. stationary front
B. obscured front
C. storm front
D. occluded front
Answer: | D |
null | Question: Diamond, graphite and fullerene are examples of what form of carbon?
Options:
A. zirconia
B. magnesium
C. crystalline
D. faceted
Answer: | C |
null | Question: The reaction of calcium oxide with carbon dioxide forms what?
Options:
A. nitrogen
B. calcium carbonate
C. carbon monoxide
D. nitrogen carbonate
Answer: | B |
null | Question: What causes lightning during a thunderstorm?
Options:
A. difference in temperature
B. difference in charge
C. difference in wind
D. difference in elevation
Answer: | B |
null | Question: Blood from the body enters what chamber of the heart before it is pumped to the right ventricle and then to the lungs?
Options:
A. left bivalve
B. right atrium
C. left ventricle
D. left atrium
Answer: | B |
null | Question: What is necessary for new alleles to be created?
Options:
A. new rna
B. new frequencies
C. cross-pollination
D. new mutations
Answer: | D |
null | Question: What is the smallest particle of an element that still has the element’s properties?
Options:
A. a nucleus
B. an electron
C. an ion
D. an atom
Answer: | D |
null | Question: Further transformation occurs during organogenesis, the formation of what?
Options:
A. muscles
B. organs
C. bones
D. arteries
Answer: | B |
null | Question: Like a blanket on a sleeping person, greenhouse gases act as what for the planet?
Options:
A. plastic
B. Exterior Coverings
C. insulation
D. ventilation
Answer: | C |
null | Question: The mouth, stomach, esophagus, small intestine, and large intestine are all part of what organ system?
Options:
A. muscular
B. digestive
C. respiratory
D. lymphatic
Answer: | B |
null | Question: Exemplified by rusty iron, what process is defined as the disintegration of a material due to chemical reactions with other substances in the environment?
Options:
A. extraction
B. corrosion
C. magnesium
D. Metal Breakdown
Answer: | B |
null | Question: Like the stem, what basic plant structure contains vascular bundles composed of xylem and phloem?
Options:
A. flower
B. root
C. leaf
D. bark
Answer: | C |
null | Question: What kind of weathering is abrasion?
Options:
A. molecular
B. electromagnetic
C. natural
D. mechanical
Answer: | D |
null | Question: What enthalpy change is observed in an exothermic reaction?
Options:
A. negative
B. entropy
C. no change
D. positive
Answer: | A |
null | Question: What physical process occurs when large chunks of food are broken down into smaller pieces?
Options:
A. swallowing
B. mechanical digestion
C. chemical digestion
D. peristalsis
Answer: | B |
null | Question: In which stage does the chromatin condense into chromosomes?
Options:
A. Telophase II
B. prophase ii
C. Metaphase I
D. Anaphase I
Answer: | B |
null | Question: Making associations between experiences is often a part of what activity?
Options:
A. eating
B. sleeping
C. learning
D. dying
Answer: | C |
null | Question: But a point mutation can also change a codon for an amino acid into a what?
Options:
A. stop codon
B. axon
C. exon
D. stop mutation
Answer: | A |
null | Question: What process creates sperm?
Options:
A. genesis
B. hypothalamus
C. altostratus
D. spermatogensis
Answer: | D |
null | Question: Which layer is the lithosphere located?
Options:
A. outermost layer
B. radii layer
C. nearest layer
D. eclipses layer
Answer: | A |
null | Question: Radioactive atoms, nuclear explosions, and stars produce what types of rays.
Options:
A. beta
B. gamma
C. plasma
D. neutron
Answer: | B |
null | Question: What hypothesis states that the biosphere is its own living organism
Options:
A. the seager hypothesis
B. small world theory
C. the gaia hypothesis
D. Big Bang theory
Answer: | C |
null | Question: What occurs when two wave crests overlap?
Options:
A. constructive overlap
B. constructive dissonance
C. constructive interference
D. forth interference
Answer: | C |
null | Question: What begins when a neuron receives a chemical stimulus?
Options:
A. a metabolism impulse
B. nerve reaction
C. a nerve impulse
D. a induce impulse
Answer: | C |
null | Question: What living things are considered photoautotrophs because they use sunlight and carbon from carbon dioxide to synthesize chemical energy in the form of carbohydrates?
Options:
A. moulds
B. protazoa
C. plants
D. bacteria
Answer: | C |
null | Question: The four phases of mitosis are prophase, metaphase, anaphase and what?
Options:
A. spirogyra
B. trichina
C. telophase
D. postphase
Answer: | C |
null | Question: What helps an insectivorous plant attract and digest insects?
Options:
A. specialized leaves
B. special seeds
C. specialized flowers
D. spines
Answer: | A |
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