question stringlengths 68 502 | answer stringclasses 4
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Question: Plants that live in the desert are called?
Options:
A. xerophytes
B. sporozoans
C. xerozoans
D. heatophiles | A |
Question: Dolphins are what type of animal?
Options:
A. reptile
B. mammal
C. fish
D. whale | B |
Question: What is the energy of moving matter?
Options:
A. binary energy
B. kinetic energy
C. potential energy
D. residual energy | B |
Question: The two parts of photosynthesis photosynthesis takes place in two stages: the light-dependent reactions and which cycle?
Options:
A. klein cycle
B. colors cycle
C. calvin cycle
D. dark cycle | C |
Question: In an atom, what two major types of particles are located in the nucleus?
Options:
A. electrons and neutrons
B. ions and electrons
C. protons and neutrons
D. molecules and neutrons | C |
Question: What is the first part of the large intestine, where wastes enter from the small intestine?
Options:
A. sacrum
B. tectum
C. cecum
D. spleen | C |
Question: Each pollen grain has two coverings: the exine (thicker, outer layer) and the what?
Options:
A. cytoplasm
B. tube nucleus
C. pollen tube
D. intine | D |
Question: In stars like our sun, hydrogen atoms join together to create what?
Options:
A. iron atom
B. water molecule
C. helium atom
D. oxygen atom | C |
Question: How do bacteria reproduce?
Options:
A. multiple fission
B. binary fission
C. residual fission
D. natural fission | B |
Question: What sort of gas is found in balloons and blimps, and is used to make them float in the sky?
Options:
A. oxygen
B. hydrogen
C. radon
D. helium | D |
Question: What color is pyrite?
Options:
A. silver
B. gold
C. black
D. blue | B |
Question: Planting a row of trees around a field or erecting a fence on a sand dune helps prevent what form of erosion?
Options:
A. fire
B. wind
C. rain
D. water | B |
Question: What structure connects the fetus to the placenta, allowing the exchange of gases?
Options:
A. umbilical cord
B. sediment cord
C. belly button
D. skin cord | A |
Question: Glass, rubber, and plastics are examples of which type of solids?
Options:
A. aqueous
B. porous
C. amorphous
D. dubious | C |
Question: What is the process bacteria use to break down chemicals into food?
Options:
A. cellular respiration
B. biosynthesis
C. gametogenesis
D. chemosynthesis | D |
Question: A fully developed placenta is made up of a large mass of what?
Options:
A. blood vessels
B. estrogen hormones
C. brain tissues
D. plant cells | A |
Question: What is an element that tend to be malleable?
Options:
A. lanthanide
B. metal
C. mixture
D. actinide | B |
Question: As a diver descends, the increase in pressure causes the body’s air pockets in the ears and lungs to do what?
Options:
A. expand
B. blow up
C. compress
D. heat up | C |
Question: Many deleterious alleles have such severe effects that a homozygous embryo spontaneously aborts long before what?
Options:
A. couple
B. baby
C. birth
D. LIfe | C |
Question: What kind of reaction, in general, keeps stars shining?
Options:
A. fusion
B. magnetism
C. fission
D. evolution | A |
Question: What is the most important factor determining soil type?
Options:
A. plant life
B. landscape
C. climate
D. ecology | C |
Question: What are the structural and functional units of the kidney called?
Options:
A. aeons
B. caldrons
C. Ions
D. nephrons | D |
Question: What structure, containing many internal membranes, is the site of photosynthesis?
Options:
A. chloroplast
B. mitochondria
C. ribosome
D. genome | A |
Question: During the day, what type of energy is transferred from the air over the land to the air over the water?
Options:
A. nuclear
B. thermal
C. magnetic
D. atmospheric | B |
Question: Which nerve carries electrical signals from the rods and cones to the brain?
Options:
A. axon
B. neurotransmitter
C. auditory
D. optic | D |
Question: What is the only thing that can change an asteroid?
Options:
A. a wind
B. a situation
C. a collision
D. weather | C |
Question: Radon is inert and generally unreactive because it is which kind of gas?
Options:
A. ideal gas
B. ignoble gas
C. noble gas
D. transitive gas | C |
Question: What are the two ways animals can manage their internal environment?
Options:
A. adaptation or mutation
B. sweating or sleeping
C. digestion or excretion
D. regulating or conforming | D |
Question: What may the jointed appendages of arthropods be used for?
Options:
A. digging
B. crawling
C. jumping
D. walking | D |
Question: A sperm cell and an egg cell fuse to become what?
Options:
A. unfertilized egg
B. fertilized egg
C. embryo
D. fetus | B |
Question: The muscles in arteries and veins that are largely responsible for regulation of blood pressure are known as what type?
Options:
A. smooth muscles
B. vascular muscles
C. opposing muscles
D. elongated muscles | A |
Question: An inversion may result when what kind of mass moves over cold ground?
Options:
A. cold air
B. warm air
C. warm water
D. cold water | B |
Question: The eardrum is part of what part of the ear?
Options:
A. thin
B. inner
C. main
D. outer | D |
Question: What is never lost and just changes forms?
Options:
A. energy
B. food
C. life
D. fuel | A |
Question: What is the term for a mixture that varies in its composition?
Options:
A. mixed composition
B. heterogeneous
C. homogeneous
D. amorphous | B |
Question: What are the "building blocks" of proteins?
Options:
A. nucleic acids
B. amino acids
C. enzymes
D. hormones | B |
Question: What is responsible for our sense of balance?
Options:
A. our ears
B. our limbs
C. our feet
D. our eyes | A |
Question: What technology do scientists use to create models?
Options:
A. microscopes
B. patterns
C. calculators
D. computers | D |
Question: What essential molecules can be harmful if ingested in large amounts, especially if they contain saturated fatty acids from animal foods?
Options:
A. hydrogen
B. helium
C. lipids
D. oxygen | C |
Question: What are two ways cnidarians are able to reproduce?
Options:
A. mitosis and meiosis
B. asexually and sexually
C. internally and externally
D. spawning and sexual | B |
Question: In what human organ system would you find live e. coli bacteria?
Options:
A. skeletal system
B. digestive system
C. circulatory system
D. respiratory system | B |
Question: What carries blood away from the heart?
Options:
A. arteries
B. capillaries
C. veins
D. pores | A |
Question: What is the most important characteristic of a homogeneous mixture?
Options:
A. high density
B. nonreactive
C. very reactive
D. uniform composition throughout | D |
Question: The domain geometry for a molecule with four electron pairs is called what?
Options:
A. bent
B. trigonal planar
C. tetrahedral
D. linear | C |
Question: What is the gel-like material between the cell membrane and the nucleus called?
Options:
A. vacuole
B. ribosome
C. cytoplasm
D. mucus | C |
Question: Like mammals and birds, and unlike other reptiles, crocodiles have how many chambers in their heart?
Options:
A. two
B. six
C. four
D. one | C |
Question: What is the phenomenon in which light and sound waves become circular at the point source of a barrier?
Options:
A. sonic wave
B. refraction
C. reflection
D. diffraction | D |
Question: What is the name of the relatively large gland in the neck that secretes thyroxin?
Options:
A. thyroid
B. Pancreas
C. Thyroid
D. Pituitary | A |
Question: Amplification that occurs in which cells often requires signal transduction pathways involving second messengers?
Options:
A. sensory receptor
B. optic nerves
C. axons
D. catayst cells | A |
Question: As adults, amphibians are completely _______, meaning they feed on other animals.
Options:
A. carnivorous
B. monogamous
C. omnivorous
D. herbivorous | A |
Question: Approximately how many billion years ago did our solar system begin?
Options:
A. three billion
B. four billion
C. five billion
D. nine billion | C |
Question: A type of what organism causes ergot, a disease that impacts crops directly and has more devastating effects on animals?
Options:
A. fungus
B. virus
C. bacteria
D. insects | A |
Question: Plant-like protists are commonly called what?
Options:
A. seaweed
B. algae
C. sponge
D. fungus | B |
Question: Which cell gives rise to all cells of the human body?
Options:
A. schwann stem cell
B. signaler stem cell
C. omnipoten stem cell
D. totipotent stem cell | D |
Question: What term describes the long tube that connects the mouth to the anus?
Options:
A. esophagus tract
B. lungs tract
C. gastrointestinal tract
D. metabolism tract | C |
Question: In some ways, a collection of gas molecules represents the simplest form of what?
Options:
A. protein
B. energy
C. matter
D. life | C |
Question: Are vesicles larger or smaller than vacuoles?
Options:
A. smaller
B. narrower
C. larger
D. wider | A |
Question: The duodenum is the first and the shortest part of what, and is where most chemical digestion takes place?
Options:
A. stomach
B. small intestine
C. large intestine
D. rectum | B |
Question: Which system consists of all the bones of the body?
Options:
A. nervous system
B. skeletal system
C. circulatory system
D. digestive system | B |
Question: What is rusting an example of?
Options:
A. Decomposition
B. radiation change
C. chemical change
D. contamination change | C |
Question: What molecule consists of two atoms of hydrogen and one atom of oxygen?
Options:
A. carbon monoxide
B. air
C. hydrogen peroxide
D. water | D |
Question: All compounds, whether ionic or covalent, must be what?
Options:
A. organic neutral
B. electrically neutral
C. metallic neutral
D. abnormal neutral | B |
Question: Which is the most common sti (sexually transmitted infection) in the united states?
Options:
A. giardia
B. syphilis
C. chlamydia
D. AIDS | C |
Question: What do all chemical reactions need to get started?
Options:
A. potential energy
B. activation energy
C. kinetic energy
D. expression energy | B |
Question: What organ does asthma periodically cause to narrow?
Options:
A. ovaries
B. liver
C. intestines
D. lungs | D |
Question: Silver, gold, and copper all conduct what very well?
Options:
A. microwaves
B. electricity
C. sound
D. light | B |
Question: Pakicetus and rodhocetus are considered to be ancestors of modern what?
Options:
A. hominins
B. whales
C. primates
D. rodents | B |
Question: 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?
Options:
A. entropy
B. vibration
C. enthalpy
D. volume | A |
Question: What is the only way to completely avoid stis?
Options:
A. contraceptive use
B. avoid sexual contact
C. cover your mouth
D. oral sex | B |
Question: What is an ion that is in common to both salts in a solution?
Options:
A. strong ion
B. native ion
C. common ion
D. regular ion | C |
Question: Prokaryotes and the nitrogen cycle nitrogen is a very important element for life because it is part of proteins and this?
Options:
A. nerve cells
B. nuclear forces
C. molecules
D. nucleic acids | D |
Question: What property is a measure of the average kinetic energy of molecules?
Options:
A. velocity
B. temperature
C. density
D. mass | B |
Question: A measure of the disorder of a system is called its what?
Options:
A. function
B. spectral
C. entropy
D. lose | C |
Question: What influence does the horizontal motion of a projectile have on free fall?
Options:
A. vertical
B. none
C. increase acceleration
D. decrease acceleration | B |
Question: Larger animals expend more of what to achieve locomotion?
Options:
A. neurons
B. time
C. distance
D. energy | D |
Question: Subshells are subdivisions of what groupings of electrons that can be found surrounding atoms?
Options:
A. globals
B. orbitals
C. analogous
D. isotopes | B |
Question: The number of moles of solute in 1 kg of solvent is defined as what?
Options:
A. pollenation
B. molarity
C. singularity
D. kilocalorie | B |
Question: What is the name for the pores in leaves that allow a plant to retain water or exchange gases?
Options:
A. rhizomes
B. chloroplasts
C. neurons
D. stomata | D |
Question: What is part of a cycle that holds an element or water for a long period of time called?
Options:
A. a ditch
B. a reservoir
C. homeostasis
D. a holding tank | B |
Question: What theory states that all organisms are made up of one or more cells?
Options:
A. the atomic theory
B. the molecular anatomy theory
C. the cell theory
D. the micro theory | C |
Question: What does rearrangements of chromosomes contribute to the emergence of?
Options:
A. extinction
B. clones
C. new species
D. fewer species | C |
Question: In the universe as a whole, what is the most common element?
Options:
A. hydrogen
B. carbon
C. helium
D. oxygen | A |
Question: What are substances that cannot be broken down into simpler substances with different properties called?
Options:
A. elements
B. compounds
C. atoms
D. molecules | A |
Question: What gas, that is dissolved in solution, is used in carbonated beverages?
Options:
A. phosphorus dioxide
B. carbon dioxide
C. hydrogen peroxide
D. carbon monoxide | B |
Question: Fluoride ion is widely used in water supplies to help prevent what?
Options:
A. rust
B. bacteria
C. tooth decay
D. chlorine taste | C |
Question: Amino acids are joined together to form a chain at what molecular structure?
Options:
A. chloroplasts
B. chromosomes
C. DNA
D. ribosomes | D |
Question: What is the name of the science that studies matter and the changes material substances undergo?
Options:
A. physics
B. chemistry
C. geology
D. biology | B |
Question: Which process changes rocks by heat and pressure?
Options:
A. Changes
B. metamorphism
C. sediments
D. weathering | B |
Question: What is defined as an antigen that causes an allergy?
Options:
A. an expectorant
B. a disinfectant
C. a pollutant
D. an allergen | D |
Question: What can be linked together to form disaccharides or polysaccharides?
Options:
A. monosaccharides
B. nitrates
C. amino acids
D. carbohydrates | A |
Question: What were the first living things to evolve on earth?
Options:
A. prokaryotes
B. carbon
C. DNA
D. eukaryotes | A |
Question: All members of a species living together form a what?
Options:
A. population
B. family
C. organization
D. group | A |
Question: What type of disturbance do even dominant plants depend on in many biomes?
Options:
A. radiation
B. mass extinction
C. seismic force
D. periodic | D |
Question: What type of behaviors are triggered by pheromones in moths?
Options:
A. peculiar
B. courtship
C. exhibit
D. illuminating | B |
Question: What do organisms use to store energy?
Options:
A. metabolytes
B. proteins
C. lipids
D. tissues | C |
Question: The scientific practice of classifying organisms is also known as what?
Options:
A. terminology
B. taxonomy
C. taxodermy
D. methodology | B |
Question: What is the type of cell division that produces gametes?
Options:
A. electrolysis
B. mitosis
C. meiosis
D. budding | C |
Question: The force applied to an object is called?
Options:
A. strain
B. stress
C. torque
D. gravity | B |
Question: What is the largest mineral group, comprising over 90% of earth's crust?
Options:
A. soils
B. carbonates
C. silicates
D. oxides | C |
Question: Sound navigation and ranging is an acronym for what, which is used to locate underwater objects such as submarines?
Options:
A. sound transmission
B. GPS
C. sonar
D. radar | C |
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