prompt stringlengths 51 646 | completion stringclasses 8 values | source stringclasses 3 values |
|---|---|---|
What does interspecific competition between species often lead to?
A. extinction
B. immigration
C. evolution
D. symbiosis
Answer: | A | sciq |
Radioactive decay can give off energy and what else?
A. atoms
B. ions
C. particles
D. light
Answer: | C | sciq |
What is the condition in which distant objects are seen clearly, but nearby objects appear blurry?
A. gleam , or hyperopia
B. farsightedness, or hyperopia
C. synthesise , or hyperopia
D. nearsightedness or hyperopia
Answer: | B | sciq |
What novelties can also arise when structures that originally played one role gradually acquire a different one?
A. reproduction
B. mutation
C. interactions
D. evolutionary
Answer: | D | sciq |
What is a gap in rock layers called?
A. an unconformity
B. a mutation
C. a crevice
D. an anomaly
Answer: | A | sciq |
Bacteria are often used to make cheese from what?
A. meat
B. egg
C. water
D. milk
Answer: | D | sciq |
Why are atoms of metals good conductors of electricity?
A. give up electrons
B. conserve heat
C. hold on to electrons
D. break into smaller parts
Answer: | A | sciq |
What is the basic unit of an organism called?
A. singularity
B. cell
C. electron
D. particle
Answer: | B | sciq |
All the blood in the human body is filtered about 60 times a day by what?
A. liver
B. kidneys
C. heart
D. lungs
Answer: | B | sciq |
What happens to the energy levels of electrons as they are closer to the nucleus?
A. they are lower
B. they divide
C. they are higher
D. they balance
Answer: | A | sciq |
What is the term for the blockage of an artery by the buildup of fatty plaques?
A. fibrosis
B. cancers
C. clumps
D. atherosclerosis
Answer: | D | sciq |
In what type of reproduction do parents of different sexes mate to produce offspring?
A. subject reproduction
B. parallel reproduction
C. sexual reproduction
D. dual reproduction
Answer: | C | sciq |
Insulin and glucagon help keep blood glucose levels in the normal range because of what type of effects?
A. ABNORMALISTIC
B. sympathetic
C. antagonistic
D. opportunistic
Answer: | C | sciq |
What phenomenon has severe consequences on both natural and man-made objects, including killing trees and degrading marble statues?
A. acid rain
B. oxygen rain
C. natural rain
D. carbon rain
Answer: | A | sciq |
What alloy is made from copper and zinc?
A. brass
B. manganate
C. iron
D. stele
Answer: | A | sciq |
The accumulation of what cells begin the development of the vertebral column and thoracic cage?
A. hindbrain cells
B. semiosis cells
C. mesenchyme cells
D. False cells
Answer: | C | sciq |
What are terrestrial biomes determined by?
A. time and temperature
B. pressure and temperature
C. temperature and moisture
D. moisture and elevation
Answer: | C | sciq |
What protects reptiles from injury and loss of water?
A. hairs
B. scales
C. pores
D. tail
Answer: | B | sciq |
What are the different feeding positions in a food chain or web called?
A. Primary Level
B. neural levels
C. trophic levels
D. convoluted levels
Answer: | C | sciq |
What is the joint where the pelvic girdle and leg come together?
A. meniscus
B. hip joint
C. femur joint
D. hip socket
Answer: | B | sciq |
Snails, scallops, and squids are examples of invertebrates called what?
A. mollusks
B. orthopods
C. clams
D. gastropods
Answer: | A | sciq |
Synthesis, decomposition, replacement, and combustion are all types of what reaction?
A. toxic
B. chemical
C. natural
D. mineral
Answer: | B | sciq |
What are the devices placed in electric circuits where charge can build up, which store energy when charged and release it when they discharge?
A. antennas
B. generators
C. resistors
D. capacitors
Answer: | D | sciq |
What is the hinged structure attached to the cranium that allows an animal to grasp and tear its food?
A. jaw
B. neck
C. tooth
D. throat
Answer: | A | sciq |
The svedberg unit is a measure of the rate of what, which is tested in a centrifuge?
A. precipitation
B. temperature
C. secretion
D. sedimentation
Answer: | D | sciq |
Muscles and skin are examples of what, consisting of specialized cells?
A. layers
B. tissues
C. molecules
D. ligaments
Answer: | B | sciq |
When do cells acquire different identities in an ordered spatial arrangement?
A. during morphogenesis
B. larval stage
C. during mitosis
D. before morphogenesis
Answer: | A | sciq |
What structures sweep laterally, hugging the pelvic walls, then turn medially and pierce the bladder wall obliquely?
A. tubules
B. ureters
C. catheters
D. fallopian tube
Answer: | B | sciq |
What was the last supercontinent on earth?
A. laurasia
B. pangaea
C. rodinia
D. eurasia
Answer: | B | sciq |
When conditions deteriorate, hydras can reproduce sexually, forming resistant zygotes that remain dormant until when?
A. Spring
B. Temperature rise
C. Hydras choose
D. conditions improve
Answer: | D | sciq |
Because collisions are ______, energy can be transferred between molecules during them.
A. elastic
B. inelastic
C. conductive
D. preservative
Answer: | A | sciq |
What is the tendency of an object to remain at rest or remain in motion called?
A. impetus
B. inertia
C. flow
D. magnetism
Answer: | B | sciq |
The pituitary gland is called the “master gland” of what system?
A. endocrine
B. digestive
C. nervous
D. hormonal
Answer: | A | sciq |
What links together to form long polymeric chains?
A. peptides
B. genes
C. nucleotides
D. lipids
Answer: | C | sciq |
What type of electrons does carbon have?
A. valence
B. gradient
C. ionic
D. shell
Answer: | A | sciq |
What do doctors call farsightedness or the inability to see close objects clearly?
A. myopia
B. hypopia
C. dysarthria
D. hyperopia
Answer: | D | sciq |
What type of simple inheritance is too simplified to explain most human traits?
A. mitosis
B. spontaneous mutation
C. etiology
D. mendelian
Answer: | D | sciq |
The sun emits energy in the form of what?
A. electromagnetic radiation
B. microwave radiation
C. mechanical radiation
D. particles radiation
Answer: | A | sciq |
The number of electrons in the outer energy level determines what property of nonmetals?
A. density
B. reactivity
C. vibration
D. permeability
Answer: | B | sciq |
Acids are the opposites of what?
A. bases
B. water
C. solids
D. gas
Answer: | A | sciq |
What is the process in which gases are exchanged between the body and the outside air?
A. respiration
B. metabolism
C. ingestion
D. precipitation
Answer: | A | sciq |
Steam consists of what common and essential element in its gaseous phase?
A. water
B. plasma
C. carbon dioxide
D. air
Answer: | A | sciq |
The capsid is made from the what that are encoded by viral genes within their genome?
A. proteins
B. hormones
C. acids
D. lipids
Answer: | A | sciq |
Methane, ethane, and propane are three of the smallest what?
A. microorganisms
B. alkanes
C. organisms
D. atoms
Answer: | B | sciq |
The number of neutrons and electrons may vary or change in an atom. what happens to the number of protons?
A. decreases
B. depends
C. increases
D. remains the same
Answer: | D | sciq |
In biological augmentation, ecologists use what to add essential materials to ecosystems?
A. fluids
B. sediments
C. stem cells
D. organisms
Answer: | D | sciq |
What kind of interference is observed when the paths differ by a whole wavelength, and the waves arrive in phase?
A. spontaneous interference
B. non-interference
C. constructive interference
D. necessary interference
Answer: | C | sciq |
What are mudskipper fish able to do in short distances?
A. walk
B. run
C. spit
D. tumble
Answer: | A | sciq |
What is the major cause of disease in agricultural crops?
A. bacteria
B. pollution
C. fungi
D. drought
Answer: | C | sciq |
What type of reproduction occurs in almost all fungi?
A. sexual
B. asexual
C. budding
D. fragmentation
Answer: | A | sciq |
What protists absorb food molecules across their cell membranes?
A. solid
B. absorptive
C. dielectric
D. fibrous
Answer: | B | sciq |
How do dogs lose body heat?
A. panting
B. barking
C. sweating
D. eating
Answer: | A | sciq |
The electron transport chains are located on the inner membrane of which organelle?
A. mitochondrion
B. lysosome
C. axon
D. chloroplast
Answer: | A | sciq |
What happens to growth of plants and bacteria in warmer regions?
A. they mutate
B. they are stunted
C. they grow slower
D. they grow faster
Answer: | D | sciq |
Electromagnetic waves are generally caused by magnetic fields doing what (or moving in what way)?
A. revolving
B. folding
C. vibrating
D. rippling
Answer: | C | sciq |
Exposure to what can increase the amount of pigment in the skin and make it appear darker?
A. gamma rays
B. nuclear radiation
C. sunlight
D. ultraviolet radiation
Answer: | D | sciq |
Most of the trash in the ocean is made of what material?
A. plastic
B. styrofoam
C. hydrocarbons
D. wood
Answer: | A | sciq |
What is the name of the glands that produce milk in female mammals ?
A. fetal glands
B. mammary glands
C. sebaceous glands
D. recombinant glands
Answer: | B | sciq |
The conductive cells within the heart establish the heart rate and transmit it through the what?
A. neurons
B. conduction
C. myocardium
D. meiosis
Answer: | C | sciq |
What is the opening in the front of the eye?
A. the cornea
B. the macula
C. the pupil
D. the iris
Answer: | C | sciq |
Binary transition-metal compounds, such as the oxides and sulfides, are usually written with idealized what?
A. speciation
B. noble gases
C. stoichiometries
D. fluctuations
Answer: | C | sciq |
What disease refers to the dangerous buildup of fatty materials in blood vessels?
A. gout
B. arthritis
C. atherosclerosis
D. fibrosis
Answer: | C | sciq |
Which nerve directly stimulates the contraction of skeletal muscles in the pharynx and larynx to contribute to the swallowing and speech functions?
A. vagus nerve
B. gland nerve
C. glands nerve
D. larynx nerve
Answer: | A | sciq |
What do we call coiled structures made of dna and proteins?
A. Molecules
B. Organisms
C. chromosomes
D. nodes
Answer: | C | sciq |
Energy comes in discrete packages called what?
A. quota
B. quasi
C. quanta
D. quasar
Answer: | C | sciq |
Which type of cell can carry out more functions, eukaryotic cells or prokaryotic cells?
A. eukaryotic cells
B. Prokaryotic Cells
C. chromosomal cells
D. both
Answer: | A | sciq |
When vascular disease causes stiffening of arteries, compliance is reduced and resistance to blood flow is increased. the result is more turbulence, higher pressure within the vessel, and reduced blood flow. this increases the work of this?
A. heart
B. lung
C. brain
D. muscles
Answer: | A | sciq |
Animals that do not have internal control of their body temperature are called what?
A. athermal
B. photophores
C. cold-blooded
D. ectotherms
Answer: | D | sciq |
What do optical fibres look like?
A. flat paper
B. thin glass tubes
C. square boxes
D. big flashlights
Answer: | B | sciq |
Genetics is the branch of biology that focuses on heredity in what?
A. organisms
B. schools
C. fruits
D. vacuums
Answer: | A | sciq |
What type of protein is a protein molecule that is attached to, or associated with the membrane of a cell or an organelle?
A. membrane protein
B. rod protein
C. conduction protein
D. amino acid
Answer: | A | sciq |
What is defined as the ability to cause changes in matter?
A. evolution
B. energy
C. nuclear
D. momentum
Answer: | B | sciq |
What group of animals has permeable skin that makes them vulnerable to pollution?
A. fish
B. reptiles
C. mammals
D. amphibians
Answer: | D | sciq |
A period is a horizontal row of the what?
A. cycles table
B. phases table
C. periodic table
D. species table
Answer: | C | sciq |
What term refers to any method of removing carbon dioxide from the atmosphere and storing it in another form?
A. carbon transfer
B. carbon sequestration
C. carbon footprint
D. carbon metamorphosis
Answer: | B | sciq |
What system protects the body from worms, germs, and other agents of harm?
A. digestion
B. lymph system
C. hormones
D. immune
Answer: | D | sciq |
Most members of the animal kingdom have differentiated tissues of four main classes—nervous, muscular, connective, and this?
A. digestive
B. neural
C. crystalline
D. epithelial
Answer: | D | sciq |
Which ancient fish has just two living species and is at risk of extinction?
A. hominids
B. squids
C. coelacanths
D. latimeria
Answer: | C | sciq |
A decline in blood flow to what organs stimulates release of the enzyme renin, in turn stimulating the reabsorption of sodium and water?
A. kidneys
B. lungs
C. thyroids
D. kidneys
Answer: | A | sciq |
What common air pollutant is characterized by its sharp odor and often triggers asthma attacks?
A. nitrogen dioxide
B. pigment dioxide
C. plant dioxide
D. Carbon Dioxide
Answer: | A | sciq |
In addition to a nucleus what do eukaryotic cells have?
A. electrons
B. organelles
C. nutrons
D. protons
Answer: | B | sciq |
What term is used to describe a cross between two individuals that have different traits?
A. purebreed
B. assimilation
C. hybridization
D. fraternization
Answer: | C | sciq |
What also happens when people feel anxious and breathe too fast?
A. they become pettite
B. they become hostile
C. they become lightheaded
D. they become elated
Answer: | C | sciq |
Which two systems together provide support to the body and allow for movement?
A. vascular and muscular
B. muscular and nervous
C. skeletal and muscular
D. skeletal and digestive
Answer: | C | sciq |
The chromosomes that have a mixture of maternal and paternal sequence are called what?
A. DNA
B. recombinant
C. gene
D. antibodies
Answer: | B | sciq |
Different types of home heating systems all function by producing what type of energy?
A. distinct
B. electron
C. thermal
D. natural
Answer: | C | sciq |
Nutrients the body needs in relatively large amounts are called what?
A. micronutrients
B. vitamins
C. minerals
D. macronutrients
Answer: | D | sciq |
Which property changes when a glass breaks?
A. its physical property
B. State
C. Chemical
D. density
Answer: | A | sciq |
What do you call large, y-shaped proteins that recognize and bind to antigens?
A. parasites
B. antibodies
C. membranes
D. proteins
Answer: | B | sciq |
What is the process by which plants make their own food?
A. cellular respiration
B. photosynthesis
C. metabolism
D. glycolysis
Answer: | B | sciq |
In amniotes that lay eggs, the shell of the egg provides protection for the developing embryo while being permeable enough to allow for the exchange of carbon dioxide and this?
A. Protein
B. tissue
C. gas
D. oxygen
Answer: | D | sciq |
What term is used to describe viruses that live in a dormant state inside the body?
A. dorment
B. potential
C. hidden
D. latency
Answer: | D | sciq |
What is the main component of phytoplankton?
A. algae
B. coral
C. seawater
D. sponge
Answer: | A | sciq |
Compounds that contain mainly the elements carbon and hydrogen are called what kind of compounds?
A. natural compounds
B. microscopic compounds
C. reactive compounds
D. organic compounds
Answer: | D | sciq |
What type of diagnosis happens before a baby is born?
A. fetal
B. postnatal
C. maternal
D. prenatal
Answer: | D | sciq |
Unlike nuclear fission, which involves dangerous radioisotopes, nuclear fusion involves what two harmless elements?
A. hydrogen and helium
B. hydrogen and oxygen
C. hydrogen and carbon
D. magnesium and helium
Answer: | A | sciq |
What is another environmental benefit of conserving resources?
A. more jobs
B. less trash
C. lower prices
D. warmer temperatures
Answer: | B | sciq |
The bright color of poison dart frogs serves what purpose?
A. attracting predators
B. no purpose
C. attracting mates
D. warning predators
Answer: | D | sciq |
What consist of chains of small molecules called nucleotides?
A. nucleic acids
B. nitrous acids
C. structural acids
D. Atomic acids
Answer: | A | sciq |
Atmospheric pressure can be measured with what tool?
A. scale
B. ruler
C. thermometer
D. barometer
Answer: | D | sciq |
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