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What are the only organisms that can perform photosynthesis?
A. autotrophs
B. heterotrophs
C. sponges
D. monocots
Answer: | A |
What is an interesting example of a molecule with two central atoms, which are both c atoms?
A. acetylene
B. chloride
C. sulfur
D. water
Answer: | A |
What is the name of the fungi that are ubiquitous in lakes and soil?
A. sporozoans
B. chytrids
C. zygomycota
D. eomycota
Answer: | B |
All the atoms of a given element have the same number of what in their nucleus, though they may have different numbers of neutrons?
A. molecules
B. compounds
C. protons
D. electrons
Answer: | C |
What causes a voltage to exist across the membrane in cells?
A. increase in energy
B. same charge
C. insulators
D. difference in charges
Answer: | D |
A synergist that makes the insertion site more stable is called a what?
A. lesion
B. kilocalorie
C. fixator
D. dominator
Answer: | C |
What system of the body is generally responsible for breathing?
A. excretory
B. integumentary
C. respiratory system
D. cardiac
Answer: | C |
Carbon dioxide does not rise like other gases because it has a density greater than what?
A. gravity
B. air
C. water
D. light
Answer: | B |
What is the property that determines the amount of current flow through a particular material?
A. resistance
B. surface tension
C. pressure
D. demand
Answer: | A |
In glycolysis, glucose is split into two molecules of pyruvate. this results in a net gain of?
A. two atp molecules
B. three atp molecules
C. four atp molecules
D. six atp molecules
Answer: | A |
What organ do we use to hear sound?
A. amplifier
B. eye
C. antennae
D. the ear
Answer: | D |
Mixture of metals is called what?
A. fusion
B. alloy
C. compound
D. amalgm
Answer: | B |
The rate the magma cools determines what property of the rock?
A. color
B. texture
C. location
D. size
Answer: | B |
Conduction from the core has what effect on the lower mantle?
A. it heats it
B. it vibrates it
C. it cools it
D. it makes it rotate
Answer: | A |
What is the measure of the amount of energy found in sound waves?
A. decibels
B. frequency
C. intensity
D. density
Answer: | C |
What theory explains most of the features of earth’s surface?
A. Big Bang theory
B. plate tectonics
C. string theory
D. flat earth theory
Answer: | B |
What part of a person with myopia is longer than normal?
A. eye
B. neck
C. leg
D. arm
Answer: | A |
The anodes in each cell of a rechargeable battery are plates or grids of lead containing spongy lead metal, while the cathodes are similar grids containing powdered what?
A. lead dioxide
B. carbon dioxide
C. straight dioxide
D. coal
Answer: | A |
In science, what is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved?
A. hypothesis
B. law
C. theory
D. concept
Answer: | C |
Life on earth is carbon-based. organisms need not only energy but also carbon ________ for building bodies?
A. crystals
B. atoms
C. monoxide
D. ions
Answer: | B |
A crater can usually be found on the top of what kind of volcanoes?
A. Dome
B. Shield
C. Compound
D. composite
Answer: | D |
Portal veins carry blood between what?
A. digestive organs
B. arteries
C. chambers of the heart
D. pairs of capillary beds
Answer: | D |
Viruses depend on what type of cells?
A. immune system cells
B. host cells
C. blood cells
D. anchor cells
Answer: | B |
Silver and ordinary table salt are two examples of chemical what?
A. impurities
B. microbes
C. organism
D. substances
Answer: | D |
What do we call the system of classification consisting of a hierarchy of groupings called taxa?
A. lamarckian system
B. linchpin system
C. linnaean system
D. crocodilian system
Answer: | C |
Which disease causes cells to divide out of control
A. mutation
B. arthritis
C. autoimmune diseases
D. cancer
Answer: | D |
Animal cells grow mainly by synthesizing protein-rich cytoplasm, a process that is described as expensive in what way?
A. metabolically
B. synthetically
C. time spent
D. calorically
Answer: | A |
Where is the cell wall located?
A. in cell membrane
B. in the chloroplast
C. in the mitochondria
D. outside cell membrane
Answer: | D |
Some protists hunt their food or act as what?
A. reptiles
B. mammals
C. parasites
D. bats
Answer: | C |
Name what nutrient cycling is strongly regulated by.
A. vegetation
B. sunlight
C. elevation
D. abundance
Answer: | A |
Why must values of specific heat be looked up in tables?
A. lack of formulas
B. difficult to understand
C. difficult to memorize
D. difficult to calculate
Answer: | D |
What is the method of evolution by which advantageous heritable traits become more common over generations?
A. flow selection
B. natural selection
C. same selection
D. artificial selection
Answer: | B |
Electrons move, but they aren’t destroyed. this is the law of conservation of what?
A. cost
B. energy
C. charge
D. matter
Answer: | C |
What type of orbitals do electrons in successive atoms on the periodic table tend to fill first?
A. outer orbitals
B. high energy
C. low-energy
D. orbital lobes
Answer: | C |
What is used as a vector for gene insertion in ex vivo gene therapy?
A. penicillin
B. virus
C. typhus
D. bacteria
Answer: | B |
In artificial passive immunization, which items from an immune animal are injected into a nonimmune animal?
A. antibodies
B. parasites
C. platelets
D. allergies
Answer: | A |
What kind of solids are gummi bears or taffy?
A. phenomena solids
B. imperative solids
C. amorphous solids
D. candy solids
Answer: | C |
In the freshwater flatworms, protonephridia serve chiefly in what?
A. thermoregulation
B. osmoregulation
C. excretion
D. enculturation
Answer: | B |
What is contained in the skin of brightly colored poison dart frogs?
A. spores
B. toxins
C. acid
D. poison
Answer: | B |
What is the exchange of plasmids by prokaryotes called?
A. artificial transfer
B. biochemical transfer
C. transcription
D. genetic transfer
Answer: | D |
What do we call the study of rock layers?
A. stratigraphy
B. geology
C. sedimentary
D. mineralogy
Answer: | A |
What are single-celled organisms that lack a nucleus called?
A. eukaryotes
B. fungi
C. prokaryotes
D. protists
Answer: | C |
The distance that light can travel in a year is known as what?
A. light year
B. solar year
C. earth year
D. beam year
Answer: | A |
Scientists who find and study fossils are called what?
A. biologists
B. anthropologist
C. paleontologists
D. geologists
Answer: | C |
What is it called when feces move along the colon too slowly?
A. respiratory
B. diarrhea
C. relaxation
D. constipation
Answer: | D |
What is the process in which a solid changes directly to a gas called?
A. condensation
B. solidification
C. sublimation
D. vaporization
Answer: | C |
What part of the atmosphere is the heat source?
A. troposphere
B. ionosphere
C. stratosphere
D. magnetosphere
Answer: | C |
Some mutations lead to new versions of proteins that help organisms adapt to changes in their environment and are essential for evolution to occur. what are these mutations known as?
A. beneficial mutations
B. evolutionary mutations
C. superficial mutations
D. provisional mutations
Answer: | A |
What is the only substance on earth that is stable in all three states?
A. carbon
B. air
C. mercury
D. water
Answer: | D |
What is the process whereby excess water and waste is removed from the body?
A. excretion
B. filtration
C. exhalation
D. diffusion
Answer: | A |
What cellular structure moves molecules between locations inside the cell?
A. transport vesicles
B. capillaries
C. transport vessels
D. dna vesicles
Answer: | A |
Alcohols can be oxidized to aldehydes or _______.
A. ketones
B. sugars
C. sugars
D. carbohydrates
Answer: | A |
What causes a meteoroid to vaporize after it enters the atmosphere?
A. gravitational pull
B. atmospheric pressure
C. friction with atmosphere
D. spontaneous combustion
Answer: | C |
How is the radioactive decay measured?
A. half-life
B. carbon dating
C. quarter-life
D. alpha emission
Answer: | A |
What term means a reproductive cell, like the human egg in females?
A. zygote
B. gamete
C. embryo
D. sperm
Answer: | B |
Veins are blood vessels that carry blood toward what?
A. lung
B. extremities
C. heart
D. brain
Answer: | C |
The spin quantum number describes the spin for a given what?
A. ion
B. electron
C. element
D. proton
Answer: | B |
What fuels provide most of the energy used worldwide?
A. fossil
B. hydroelectric
C. renewable
D. solar
Answer: | A |
What instruments used in guidance systems to indicate directions in space must have an angular momentum that does not change in direction?
A. elevators
B. gyroscopes
C. magnets
D. actuators
Answer: | B |
What are the deepest places on earth?
A. deep sea resonances
B. deep sea diversions
C. deep sea trenches
D. deep sea caves
Answer: | C |
While the chromosome is replicating, the cell does what?
A. diffuses
B. elongates
C. shrinks
D. propagates
Answer: | B |
On the origin of species is a book by darwin that spells out what theory?
A. theory of evolution
B. theory of the universe
C. theory of reproduction
D. theory of the computation
Answer: | A |
After an adaptive defense is produced against a pathogen, typically plasma cells first secrete immunoglobin, which constitutes about ten percent of all what?
A. allergies
B. antibodies
C. hormones
D. parasites
Answer: | B |
Solar and wind are still expensive compared to what?
A. fossil fuels
B. coal fuels
C. electricity
D. batteries
Answer: | A |
The pollen tube discharges two sperm into the female gametophyte after what occurs?
A. pollination
B. excrement
C. evolution
D. hibernation
Answer: | A |
Steel, bronze, and brass are good examples of what?
A. alloys
B. metalloids
C. elements
D. salts
Answer: | A |
Most hydrozoa have both polyp and what forms in their life cycle?
A. medusa
B. polypoid
C. globular
D. hydra
Answer: | A |
Mammalian lungs are located in what cavity, where they are surrounded and protected by the rib cage, intercostal muscles, and chest wall?
A. abdominopelvic
B. ventral
C. thoracic
D. dorsal
Answer: | C |
Segmented worms have a digestive,nervous and what type of system?
A. lymphatic
B. circulatory
C. pulmonary
D. vascular
Answer: | B |
In what route do water and solutes move along the continuum of cytosol?
A. nonvascular
B. hydrophylic
C. symplastic
D. hydrophobic
Answer: | C |
Atomic orbitals are populated with what subatomic particles?
A. protons
B. atoms
C. electrons
D. neurons
Answer: | C |
Which law refers to the electron charge remaining the same during transfer?
A. law of conservation of speculation
B. law of change
C. law of construct of charge
D. law of conservation of charge
Answer: | D |
Hotspots can be used to tell the speed and direction that what object is moving?
A. electrons
B. crystals
C. glaciers
D. plates
Answer: | D |
Does overhead irrigation or drip irrigation use less water?
A. stream irrigation
B. mist irrigation
C. constant flow
D. drip irrigation
Answer: | D |
Stis are diseases caused by what that spread through sexual contact?
A. pathogens
B. amoeba
C. ecosystems
D. parasites
Answer: | A |
The heart is a muscular organ that pumps blood through which system?
A. nervous
B. circulatory
C. pulmonary
D. endocrine
Answer: | B |
Being dependent on adults for a long maturation period allows young primates ample time for what?
A. sleeping
B. socialization
C. attachment
D. learning
Answer: | D |
What process can be triggered by a burst of ethylene production in the fruit?
A. hardening
B. pickling
C. drying
D. ripening
Answer: | D |
What is a sac-like organ that stores urine?
A. the urinary bladder
B. the small intestine
C. the urinary liver
D. the colon
Answer: | A |
When the pressure waves from the scala move the basilar membrane, the tectorial membrane slides across the what?
A. keratin
B. cytoplasm
C. stereocilia
D. dendrites
Answer: | C |
What are surface currents generally caused by?
A. major wind belts
B. major steam belts
C. major humidity belts
D. minor wind belts
Answer: | A |
What helps cells take up glucose from the blood?
A. estrogen
B. hemoglobin
C. insulin
D. oxygen
Answer: | C |
What is the term for potential energy due to the position of an object above earth?
A. gravitational potential energy
B. gravitational indication energy
C. gravitational pull energy
D. gravitational recovery energy
Answer: | A |
What type of engineers influence community structure through their effects on the physical environment?
A. electrical engineers
B. ecosystem engineers
C. civil engineers
D. mechanical engineers
Answer: | B |
The atomic number defines the identity of what?
A. neutralized molecule
B. element
C. atomic reaction
D. periodic table
Answer: | B |
The nuclei of radioisotopes are unstable, so they constantly decay and emit what?
A. radiation
B. acid
C. chemicals
D. moisture
Answer: | A |
Parthenogenesis is the most common form of what in animals that at other times reproduce sexually?
A. asexual reproduction
B. cell division
C. sexual dimorphism
D. budding
Answer: | A |
What kind of fossils are excellent markers for correlating the ages of sedimentary rocks?
A. vertiscom
B. agonum
C. euglena
D. foram
Answer: | D |
Gated ion channels have a central role in what system's function?
A. skeletal
B. nervous
C. generous
D. endocrine
Answer: | B |
Energy that the sun and other stars release into space is called what?
A. kinetic energy
B. mechanical energy
C. static energy
D. electromagnetic energy
Answer: | D |
Hydrogen gas is generated by the reaction of nitric acid and what else?
A. carbon
B. martian iron
C. gaseous iron
D. elemental iron
Answer: | D |
What is the top 200 meters of water in the ocean called?
A. thymic zone
B. over zone
C. photic zone
D. organelle zone
Answer: | C |
Zinc is what kind of metal.?
A. active transition metal
B. active move metal
C. active flow metal
D. passive stagnant metal
Answer: | A |
What do decomposers release when they break down dead organisms?
A. acids
B. carbon dioxide
C. nutrients
D. methane
Answer: | C |
Wavelengths are described by a unit of what?
A. weight
B. distance
C. direction
D. speed
Answer: | B |
Chlamydia, gonorrhea, and syphilis are examples of which type of sti?
A. non-contagious
B. incurable
C. bacterial
D. viral
Answer: | C |
Which process acts as a natural complement for cellular respiration?
A. glycolysis
B. atherosclerosis
C. absorption
D. photosynthesis
Answer: | D |
What are the only invertebrates that can fly?
A. amphibians
B. mammels
C. insects
D. birds
Answer: | C |
What is the term for the cell fragments involved in blood clotting, which stick to tears in blood vessels and to each other?
A. droplets
B. platelets
C. molecules
D. cells
Answer: | B |
What celestial body is often discovered because it causes a star to move or to dim?
A. comet
B. asteroid
C. satellite
D. exoplanet
Answer: | D |
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