prompt stringlengths 51 646 | completion stringclasses 8 values | source stringclasses 3 values |
|---|---|---|
What sort of gas is found in balloons and blimps, and is used to make them float in the sky?
A. hydrogen
B. helium
C. radon
D. oxygen
Answer: | B | sciq |
What color is pyrite?
A. black
B. blue
C. silver
D. gold
Answer: | D | sciq |
Planting a row of trees around a field or erecting a fence on a sand dune helps prevent what form of erosion?
A. rain
B. wind
C. fire
D. water
Answer: | B | sciq |
What structure connects the fetus to the placenta, allowing the exchange of gases?
A. sediment cord
B. umbilical cord
C. skin cord
D. belly button
Answer: | B | sciq |
Glass, rubber, and plastics are examples of which type of solids?
A. porous
B. dubious
C. amorphous
D. aqueous
Answer: | C | sciq |
What is the process bacteria use to break down chemicals into food?
A. biosynthesis
B. gametogenesis
C. cellular respiration
D. chemosynthesis
Answer: | D | sciq |
A fully developed placenta is made up of a large mass of what?
A. estrogen hormones
B. blood vessels
C. brain tissues
D. plant cells
Answer: | B | sciq |
What is an element that tend to be malleable?
A. mixture
B. lanthanide
C. actinide
D. metal
Answer: | D | sciq |
As a diver descends, the increase in pressure causes the body’s air pockets in the ears and lungs to do what?
A. blow up
B. heat up
C. expand
D. compress
Answer: | D | sciq |
Many deleterious alleles have such severe effects that a homozygous embryo spontaneously aborts long before what?
A. LIfe
B. couple
C. birth
D. baby
Answer: | C | sciq |
What kind of reaction, in general, keeps stars shining?
A. fusion
B. fission
C. evolution
D. magnetism
Answer: | A | sciq |
What is the most important factor determining soil type?
A. landscape
B. climate
C. ecology
D. plant life
Answer: | B | sciq |
What are the structural and functional units of the kidney called?
A. aeons
B. nephrons
C. caldrons
D. Ions
Answer: | B | sciq |
What structure, containing many internal membranes, is the site of photosynthesis?
A. ribosome
B. chloroplast
C. genome
D. mitochondria
Answer: | B | sciq |
During the day, what type of energy is transferred from the air over the land to the air over the water?
A. atmospheric
B. nuclear
C. thermal
D. magnetic
Answer: | C | sciq |
Which nerve carries electrical signals from the rods and cones to the brain?
A. axon
B. neurotransmitter
C. optic
D. auditory
Answer: | C | sciq |
What is the only thing that can change an asteroid?
A. a situation
B. a wind
C. weather
D. a collision
Answer: | D | sciq |
Radon is inert and generally unreactive because it is which kind of gas?
A. noble gas
B. transitive gas
C. ideal gas
D. ignoble gas
Answer: | A | sciq |
What are the two ways animals can manage their internal environment?
A. adaptation or mutation
B. sweating or sleeping
C. regulating or conforming
D. digestion or excretion
Answer: | C | sciq |
What may the jointed appendages of arthropods be used for?
A. crawling
B. walking
C. digging
D. jumping
Answer: | B | sciq |
A sperm cell and an egg cell fuse to become what?
A. fetus
B. fertilized egg
C. unfertilized egg
D. embryo
Answer: | B | sciq |
The muscles in arteries and veins that are largely responsible for regulation of blood pressure are known as what type?
A. elongated muscles
B. smooth muscles
C. vascular muscles
D. opposing muscles
Answer: | B | sciq |
An inversion may result when what kind of mass moves over cold ground?
A. warm air
B. cold air
C. cold water
D. warm water
Answer: | A | sciq |
The eardrum is part of what part of the ear?
A. outer
B. inner
C. main
D. thin
Answer: | A | sciq |
What is never lost and just changes forms?
A. fuel
B. life
C. energy
D. food
Answer: | C | sciq |
What is the term for a mixture that varies in its composition?
A. heterogeneous
B. homogeneous
C. mixed composition
D. amorphous
Answer: | A | sciq |
What are the "building blocks" of proteins?
A. enzymes
B. amino acids
C. nucleic acids
D. hormones
Answer: | B | sciq |
What is responsible for our sense of balance?
A. our limbs
B. our feet
C. our eyes
D. our ears
Answer: | D | sciq |
What technology do scientists use to create models?
A. calculators
B. patterns
C. computers
D. microscopes
Answer: | C | sciq |
What essential molecules can be harmful if ingested in large amounts, especially if they contain saturated fatty acids from animal foods?
A. helium
B. lipids
C. hydrogen
D. oxygen
Answer: | B | sciq |
What are two ways cnidarians are able to reproduce?
A. mitosis and meiosis
B. spawning and sexual
C. asexually and sexually
D. internally and externally
Answer: | C | sciq |
In what human organ system would you find live e. coli bacteria?
A. skeletal system
B. circulatory system
C. digestive system
D. respiratory system
Answer: | C | sciq |
What carries blood away from the heart?
A. veins
B. pores
C. capillaries
D. arteries
Answer: | D | sciq |
What is the most important characteristic of a homogeneous mixture?
A. very reactive
B. high density
C. nonreactive
D. uniform composition throughout
Answer: | D | sciq |
The domain geometry for a molecule with four electron pairs is called what?
A. tetrahedral
B. linear
C. bent
D. trigonal planar
Answer: | A | sciq |
What is the gel-like material between the cell membrane and the nucleus called?
A. ribosome
B. cytoplasm
C. vacuole
D. mucus
Answer: | B | sciq |
Like mammals and birds, and unlike other reptiles, crocodiles have how many chambers in their heart?
A. two
B. six
C. one
D. four
Answer: | D | sciq |
What is the phenomenon in which light and sound waves become circular at the point source of a barrier?
A. refraction
B. sonic wave
C. reflection
D. diffraction
Answer: | D | sciq |
What is the name of the relatively large gland in the neck that secretes thyroxin?
A. Pancreas
B. Thyroid
C. Pituitary
D. thyroid
Answer: | B | sciq |
Amplification that occurs in which cells often requires signal transduction pathways involving second messengers?
A. sensory receptor
B. optic nerves
C. axons
D. catayst cells
Answer: | A | sciq |
As adults, amphibians are completely _______, meaning they feed on other animals.
A. omnivorous
B. monogamous
C. carnivorous
D. herbivorous
Answer: | C | sciq |
Approximately how many billion years ago did our solar system begin?
A. four billion
B. three billion
C. five billion
D. nine billion
Answer: | C | sciq |
A type of what organism causes ergot, a disease that impacts crops directly and has more devastating effects on animals?
A. insects
B. fungus
C. bacteria
D. virus
Answer: | B | sciq |
Plant-like protists are commonly called what?
A. fungus
B. algae
C. sponge
D. seaweed
Answer: | B | sciq |
Which cell gives rise to all cells of the human body?
A. signaler stem cell
B. omnipoten stem cell
C. totipotent stem cell
D. schwann stem cell
Answer: | C | sciq |
What term describes the long tube that connects the mouth to the anus?
A. metabolism tract
B. esophagus tract
C. gastrointestinal tract
D. lungs tract
Answer: | C | sciq |
In some ways, a collection of gas molecules represents the simplest form of what?
A. matter
B. energy
C. protein
D. life
Answer: | A | sciq |
Are vesicles larger or smaller than vacuoles?
A. larger
B. wider
C. smaller
D. narrower
Answer: | C | sciq |
The duodenum is the first and the shortest part of what, and is where most chemical digestion takes place?
A. rectum
B. large intestine
C. stomach
D. small intestine
Answer: | D | sciq |
Which system consists of all the bones of the body?
A. digestive system
B. skeletal system
C. nervous system
D. circulatory system
Answer: | B | sciq |
What is rusting an example of?
A. radiation change
B. contamination change
C. chemical change
D. Decomposition
Answer: | C | sciq |
What molecule consists of two atoms of hydrogen and one atom of oxygen?
A. hydrogen peroxide
B. carbon monoxide
C. air
D. water
Answer: | D | sciq |
All compounds, whether ionic or covalent, must be what?
A. abnormal neutral
B. organic neutral
C. electrically neutral
D. metallic neutral
Answer: | C | sciq |
Which is the most common sti (sexually transmitted infection) in the united states?
A. giardia
B. AIDS
C. syphilis
D. chlamydia
Answer: | D | sciq |
What do all chemical reactions need to get started?
A. kinetic energy
B. activation energy
C. potential energy
D. expression energy
Answer: | B | sciq |
What organ does asthma periodically cause to narrow?
A. liver
B. lungs
C. ovaries
D. intestines
Answer: | B | sciq |
Silver, gold, and copper all conduct what very well?
A. electricity
B. light
C. microwaves
D. sound
Answer: | A | sciq |
Pakicetus and rodhocetus are considered to be ancestors of modern what?
A. rodents
B. hominins
C. whales
D. primates
Answer: | C | sciq |
Chemical and physical changes in a system may be accompanied by an increase or a decrease in the disorder of the system, corresponding to an increase or decrease in what?
A. volume
B. vibration
C. entropy
D. enthalpy
Answer: | C | sciq |
What is the only way to completely avoid stis?
A. avoid sexual contact
B. cover your mouth
C. oral sex
D. contraceptive use
Answer: | A | sciq |
What is an ion that is in common to both salts in a solution?
A. strong ion
B. native ion
C. common ion
D. regular ion
Answer: | C | sciq |
Prokaryotes and the nitrogen cycle nitrogen is a very important element for life because it is part of proteins and this?
A. nucleic acids
B. nerve cells
C. molecules
D. nuclear forces
Answer: | A | sciq |
What property is a measure of the average kinetic energy of molecules?
A. density
B. temperature
C. velocity
D. mass
Answer: | B | sciq |
A measure of the disorder of a system is called its what?
A. function
B. spectral
C. entropy
D. lose
Answer: | C | sciq |
What influence does the horizontal motion of a projectile have on free fall?
A. increase acceleration
B. none
C. decrease acceleration
D. vertical
Answer: | B | sciq |
Larger animals expend more of what to achieve locomotion?
A. neurons
B. time
C. distance
D. energy
Answer: | D | sciq |
Subshells are subdivisions of what groupings of electrons that can be found surrounding atoms?
A. analogous
B. globals
C. isotopes
D. orbitals
Answer: | D | sciq |
The number of moles of solute in 1 kg of solvent is defined as what?
A. molarity
B. singularity
C. pollenation
D. kilocalorie
Answer: | A | sciq |
What is the name for the pores in leaves that allow a plant to retain water or exchange gases?
A. rhizomes
B. neurons
C. stomata
D. chloroplasts
Answer: | C | sciq |
What is part of a cycle that holds an element or water for a long period of time called?
A. a holding tank
B. a ditch
C. a reservoir
D. homeostasis
Answer: | C | sciq |
What theory states that all organisms are made up of one or more cells?
A. the cell theory
B. the molecular anatomy theory
C. the atomic theory
D. the micro theory
Answer: | A | sciq |
What does rearrangements of chromosomes contribute to the emergence of?
A. extinction
B. fewer species
C. new species
D. clones
Answer: | C | sciq |
In the universe as a whole, what is the most common element?
A. hydrogen
B. helium
C. oxygen
D. carbon
Answer: | A | sciq |
What are substances that cannot be broken down into simpler substances with different properties called?
A. compounds
B. elements
C. molecules
D. atoms
Answer: | B | sciq |
What gas, that is dissolved in solution, is used in carbonated beverages?
A. phosphorus dioxide
B. carbon monoxide
C. carbon dioxide
D. hydrogen peroxide
Answer: | C | sciq |
Fluoride ion is widely used in water supplies to help prevent what?
A. rust
B. bacteria
C. chlorine taste
D. tooth decay
Answer: | D | sciq |
Amino acids are joined together to form a chain at what molecular structure?
A. ribosomes
B. chloroplasts
C. DNA
D. chromosomes
Answer: | A | sciq |
What is the name of the science that studies matter and the changes material substances undergo?
A. physics
B. geology
C. biology
D. chemistry
Answer: | D | sciq |
Which process changes rocks by heat and pressure?
A. metamorphism
B. weathering
C. sediments
D. Changes
Answer: | A | sciq |
What is defined as an antigen that causes an allergy?
A. an expectorant
B. a disinfectant
C. an allergen
D. a pollutant
Answer: | C | sciq |
What can be linked together to form disaccharides or polysaccharides?
A. amino acids
B. monosaccharides
C. carbohydrates
D. nitrates
Answer: | B | sciq |
What were the first living things to evolve on earth?
A. carbon
B. DNA
C. prokaryotes
D. eukaryotes
Answer: | C | sciq |
All members of a species living together form a what?
A. organization
B. population
C. family
D. group
Answer: | B | sciq |
What type of disturbance do even dominant plants depend on in many biomes?
A. seismic force
B. radiation
C. periodic
D. mass extinction
Answer: | C | sciq |
What type of behaviors are triggered by pheromones in moths?
A. courtship
B. illuminating
C. peculiar
D. exhibit
Answer: | A | sciq |
What do organisms use to store energy?
A. lipids
B. metabolytes
C. proteins
D. tissues
Answer: | A | sciq |
The scientific practice of classifying organisms is also known as what?
A. taxonomy
B. taxodermy
C. methodology
D. terminology
Answer: | A | sciq |
What is the type of cell division that produces gametes?
A. meiosis
B. mitosis
C. electrolysis
D. budding
Answer: | A | sciq |
The force applied to an object is called?
A. stress
B. strain
C. torque
D. gravity
Answer: | A | sciq |
What is the largest mineral group, comprising over 90% of earth's crust?
A. soils
B. oxides
C. silicates
D. carbonates
Answer: | C | sciq |
Sound navigation and ranging is an acronym for what, which is used to locate underwater objects such as submarines?
A. sonar
B. sound transmission
C. radar
D. GPS
Answer: | A | sciq |
What is the term for the difference in elevation between two contour lines?
A. design interval
B. height
C. contour interval
D. mapping interval
Answer: | C | sciq |
The same reaction regenerates pyruvate, which is transported to which cells?
A. skin
B. mesophyll
C. symbionts
D. outermost
Answer: | B | sciq |
What large carboxylic acid with three ionizable hydrogen atoms gives some fruits a sour or tart flavor?
A. beryllium acid
B. hydrochloric acid
C. citric acid
D. ammonia acid
Answer: | C | sciq |
How does sap get to the tops of tall trees?
A. through pressure from below
B. via Coriolis forces
C. through negative pressure
D. through suction power
Answer: | C | sciq |
Each megasporangium has a single functional one of what?
A. antispore
B. spicule
C. megaspore
D. cocklebur
Answer: | C | sciq |
Somatosensation refers to what of the five senses?
A. sight
B. balance
C. thought
D. touch
Answer: | D | sciq |
Respiratory distress syndrome results from insufficient production of what?
A. carbon dioxide
B. lung tissue
C. pulmonary surfactant
D. alveoli
Answer: | C | sciq |
Redox reactions can always be recognized by a change in what number of two of the atoms in the reaction?
A. fermentation
B. oxygen
C. oxidation
D. precipitation
Answer: | C | sciq |
In humans, the anus is attached to what kind of intestine?
A. internal
B. large
C. huge
D. small
Answer: | B | sciq |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.