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Did the the open circulatory systems of molluscs and arthropods arise dependently or independently of each other?
A. independently
B. separately
C. dependently
D. together
Answer: | A |
What kind of weathering is abrasion?
A. mechanical
B. natural
C. electromagnetic
D. molecular
Answer: | A |
What are composed of alternating positive and negative ions?
A. radioactive substances
B. magnetic crystals
C. polar bonds
D. ionic crystals
Answer: | D |
What is the term for a small organelle where proteins are made?
A. ribosome
B. capsule
C. ovary
D. atom
Answer: | A |
What occurs when the immune system attacks harmless substances that enter the body from the outside?
A. mutation
B. cell rejection
C. anomalies
D. allergies
Answer: | D |
What is composed of very long strands of glucose monomers, is largely indigestible and comprises the cell walls of plants?
A. chlorophyll
B. tree bark
C. cellulose
D. vascular cambrium
Answer: | C |
Where are the terrestrial planets located, in relation to the sun?
A. To the left
B. To the right
C. closest
D. farthest
Answer: | C |
What are the insects that suck up the sap from plants?
A. roaches and leafhoppers
B. aphids and leafhoppers
C. butterflies and leafhoppers
D. plagues and leafhoppers
Answer: | B |
The energy for an ecosystem can come from sunlight or _________?
A. fossil fuels
B. radiation compounds
C. rain
D. chemical compounds
Answer: | D |
Phagocytosis, pinocytosis, and receptor-mediated endocytosis are the three types of what?
A. modulators
B. mitosis
C. nanoparticles
D. endocytosis
Answer: | D |
What type of machines generally have lower efficiency but greater mechanical advantage?
A. calculation machines
B. simple machines
C. compound machines
D. radical machines
Answer: | C |
What is the name of the layer above the mesosphere?
A. intersphere
B. lithosphere
C. thermosphere
D. exosphere
Answer: | C |
What layer of earth contains abundant oxygen, which can combine with other elements to create oxide minerals?
A. the crust
B. the tectonic plates
C. the core
D. the surface
Answer: | A |
Animals that are endotherms or ectotherms are distinguished by the ability to maintain a constant what?
A. Moving Tempature
B. body temperature
C. bearing temperature
D. step temperature
Answer: | B |
What form of energy is light?
A. mechanical
B. seismic
C. hydro
D. electromagnetic
Answer: | D |
What is a common chemical substance on planet earth?
A. oxygen
B. nitrogen
C. water
D. hydrogen
Answer: | C |
Blood calcium levels are tightly regulated by the what system?
A. digestive
B. cardiovascular
C. endocrine
D. nervous
Answer: | C |
This bodily defense function attacks pathogens and includes inflammatory response and phagocytosis?
A. second line of defense
B. first line of defense
C. vomitting
D. third line of defense
Answer: | A |
Lodgepole cones remain closed until exposed to what?
A. UV light
B. extreme heat
C. precipitation
D. predators
Answer: | B |
What is the change of state from a gas to a liquid?
A. combustion
B. fermentation
C. vaporation
D. condensation
Answer: | D |
The steropodon may have been an ancestor of which animal?
A. platypus
B. wooly mammoth
C. geckos
D. lioness
Answer: | A |
Closely associated with "work", what is characterized by its many forms and the fact that it is conserved?
A. fuel
B. matter
C. energy
D. heating
Answer: | C |
What is the time it takes for radioactive substance to decay?
A. decay rate
B. deterioration rate
C. half-life
D. full-life
Answer: | C |
What type of biomes are found in the salt water of the ocean?
A. marine
B. active
C. major
D. surreal
Answer: | A |
What is formed when an enzyme binds its substrate?
A. enzyme - substrate complex
B. nucleus - substrate complex
C. vessel - substrate complex
D. lock and key model
Answer: | A |
What type of rock is a sandstone?
A. limestone rocks
B. sedimentary rocks
C. igneous rocks
D. landform rocks
Answer: | B |
Which acids provide the molecular blueprints for all proteins produced in living systems?
A. amino acids
B. periodic acids
C. nucleic acids
D. nitrous acids
Answer: | C |
Cephalopods have three hearts that pump blood of what color?
A. purple
B. Green
C. blue
D. Red
Answer: | C |
Influenza is a type of what, where glycoproteins attach to a host epithelial cell?
A. recent disease
B. viral disease
C. atoms disease
D. nucleus disease
Answer: | B |
What is the smallest aromatic hydrocarbon?
A. anthracene
B. benzene
C. naphthalene
D. phenanthrene
Answer: | B |
A hypothesis is scientific only if it can be tested by what?
A. carbon dating
B. making a conclusion
C. making observations
D. independent variable
Answer: | C |
Aging occurs as cells lose their ability to do what?
A. divide
B. duplicate
C. fold
D. split
Answer: | A |
The tyndall effect refers to the scattering of what by colloidal particles?
A. dust mites
B. visible light
C. primary colors
D. dark matter
Answer: | B |
Acids are associated with a low number on which scale?
A. acidic
B. metric
C. ph
D. ionic
Answer: | C |
Said to go hand-in-hand with science, what evolves as new materials, designs, and processes are invented?
A. invention
B. biology
C. technology
D. industry
Answer: | C |
What are the poles labeled?
A. east and west
B. southwest and south
C. west and south
D. north and south
Answer: | D |
What is considered to be the "fundamental unit" of life?
A. bacteria
B. organ
C. proton
D. cell
Answer: | D |
What two states of matter are included in the category "fluids"?
A. liquids and soilds
B. liquids and gases
C. bacteria and gases
D. solids and gases
Answer: | B |
When matter changes into an entirely different substance with different chemical properties, what has occurred?
A. mechanical change
B. physical change
C. gaseous change
D. chemical change
Answer: | D |
Phospholipids are unable to mix with what?
A. air
B. nitrogen
C. solids
D. water
Answer: | D |
What are molecules that the immune system recognize as foreign to the body?
A. antigens
B. peptides
C. viruses
D. tumors
Answer: | A |
The end result of diffusion is an equal concentration, or equilibrium , of molecules on both sides of what?
A. the membrane
B. the organelle
C. the organism
D. the cell
Answer: | A |
What paired organs that are part of the urinary system play the prime role in excretion?
A. ovaries
B. lungs
C. liver
D. kidneys
Answer: | D |
The fungus benefits from the constant supply of food produced by what?
A. the phytoflagellate
B. the photosynthesizer
C. the spermatophyte
D. the host
Answer: | B |
Gases can be classifed as real or what?
A. noble
B. shape
C. dense
D. ideal
Answer: | D |
What is a mutation?
A. change in the nucleotide sequence of dna
B. change in the rna sequence of dna
C. change in the distinct sequence of dna
D. change in the swetha sequence of dna
Answer: | A |
What are biological catalysts that speeds up biochemical reactions?
A. hormones
B. enzymes
C. proteins
D. carbohydrates
Answer: | B |
What type of reaction is a transfer of a proton from one molecule or ion to another?
A. ionization
B. thermal reaction
C. ionic bonding
D. acid-base
Answer: | D |
What part of the plant, in general, is responsible for transport and storage of water and minerals?
A. stems
B. pistil
C. leaves
D. petals
Answer: | A |
One gram of carbohydrates provides how many calories of energy?
A. eight
B. one
C. two
D. four
Answer: | D |
Mushrooms and other fungi obtain energy from what?
A. the sun
B. the air
C. the soil
D. other organisms
Answer: | D |
How are protozoa that cause giardiasis spread?
A. food and water
B. insects
C. starch and water
D. lakes and rivers
Answer: | A |
What can prevent the passage of molecules and ions between cells, such as in the blood-brain barrier?
A. solid junctions
B. special junctions
C. tight junctions
D. fatty junctions
Answer: | C |
Give an example of air pollution while painting indoors.
A. gas fumes
B. paint fumes
C. fuel fumes
D. variety fumes
Answer: | B |
What plays a variety of important roles in biochemical systems?
A. bacteria
B. mutation
C. reactants
D. protein
Answer: | D |
What type of plants grow on other plants?
A. legumes
B. bryophytes
C. parasites
D. epiphytes
Answer: | D |
What provides a protective covering for the body and helps maintain homeostasis?
A. endorcrine system
B. integumentary system
C. unadorned system
D. lysogenic system
Answer: | B |
Uranium is an important part of the process used to harness which type of power?
A. gravitational
B. nuclear
C. wind
D. solar
Answer: | B |
Budding and fission in annelids are examples of what type of reproduction?
A. asexual
B. byproduct
C. hybrid
D. sexual
Answer: | A |
What is the process by which plants make their own food?
A. ATP cycle
B. mitochondrial process
C. photosynthesis
D. respiration
Answer: | C |
In what part of the carbon cycle does carbon move between living things and the air?
A. biotic cycle
B. envelop cycle
C. abdaspac cycle
D. endothermic cycle
Answer: | A |
Herbivores and the bacteria that live in their intestines demonstrate a two-way beneficial relationship called what?
A. mutualism
B. parasitism
C. pragmatism
D. syncretism
Answer: | A |
What joins within each testis to form the epididymis?
A. hypodermic tubules
B. viviparous tubules
C. seminiferous tubules
D. interstitial tubules
Answer: | C |
How many layers of phospholipids does the cell membrane contain?
A. two
B. five
C. four
D. three
Answer: | A |
What process within cells makes sure that every gamete receives a copy of every chromosome?
A. fission
B. genomes
C. meiosis
D. mutations
Answer: | C |
Do amphibians and reptiles maintain a constant body temperature?
A. no, they have about the same body temperature as their surroundings
B. no, they have a higher body temperature than their surroundings
C. yes
D. no, they have a lower body temperature than their surroundings
Answer: | A |
Most vascular plants are seed plants, also known as?
A. fungus
B. sporozoans
C. bacteria
D. spermatophytes
Answer: | D |
Centrifuges use what to perform their task?
A. magnetism
B. absorption
C. jets
D. inertia
Answer: | D |
What are the two unique features of mollusks?
A. mantle and radula
B. antennae and pseudopod
C. radula and antennae
D. pseudopod and mantle
Answer: | A |
Name the two types of water turtles live in.
A. ocean water and fresh water
B. river water and lake water
C. ocean water and sea water
D. arctic water and ice water
Answer: | A |
What structures are located on roof of the nasopharynx and on each side of the pharynx?
A. tonsils
B. tongues
C. testicles
D. uvula
Answer: | A |
What colorful arc-shaped atmospheric phenomena are produced by a combination of refraction and reflection?
A. sunsets
B. shadows
C. rainbows
D. lightning
Answer: | C |
Rabies transmission occurs when saliva from an infected mammal enters a wound. the virus travels through neurons in the peripheral nervous system to the central nervous system where it impairs this?
A. brain function
B. lung function
C. skeletal system
D. reproduction system
Answer: | A |
Newton realized that the nature of gravity on earth that pulls an apple to the ground could explain the motion of these?
A. moon and planets
B. molecules
C. atoms and quarks
D. seasons
Answer: | A |
Where do most of the steps of cellular respiration take place?
A. cytoplasm
B. ribosomes
C. nucleus
D. mitochondria
Answer: | D |
Which metal is not solid at room temperature?
A. titanium
B. aluminum
C. silver
D. mercury
Answer: | D |
Induced mutations are caused by environmental factors. what term is used to describe a mutation that has no environmental cause?
A. cancerous mutation
B. evident mutation
C. numerous mutation
D. spontaneous mutation
Answer: | D |
What part of the cell does cellular respiration occur?
A. glucose
B. mitochondria
C. proton
D. nuclei
Answer: | B |
How is the chance of survival affected when animals lack parental care?
A. decreased
B. increased
C. variable
D. unaffected
Answer: | A |
Elements with magic numbers of what tend to have more stable isotopes?
A. protons
B. nucleus
C. molecules
D. pressure
Answer: | A |
What is the term for the steep sloped side of a sand dune?
A. slip face
B. break face
C. front face
D. slide face
Answer: | A |
Pulleys are generally used to do what with objects?
A. lift
B. pack
C. clean
D. wrap
Answer: | A |
What term describes how close estimates are to one another?
A. precise
B. Distant
C. precision
D. efficiency
Answer: | C |
What are membrane-bound organelles that can have secretory, excretory, and storage functions?
A. vacuoles
B. prokaryotes
C. nuclei
D. alleles
Answer: | A |
The structural classification of joints divides them into bony, fibrous, cartilaginous, and synovial joints. the bones of fibrous joints are held together by fibrous connective tissue; the three types of fibrous joints are sutures, syndesomes, and what?
A. synchondrosis
B. gomphoses
C. articular
D. cartilaginous
Answer: | B |
A catalyst can increase the rate of what, in general?
A. chemical reaction
B. carbon reaction
C. consumption reaction
D. mechanicl reaction
Answer: | A |
Which crust lies deep inside the ocean?
A. shallowest
B. thickest
C. oldest
D. youngest
Answer: | C |
What is the most significant cause of respiratory disease as well as cardiovascular disease and cancer?
A. running
B. sleeping
C. driving
D. smoking
Answer: | D |
What type of light can you feel as heat but not see and has the longest wavelengths and lowest frequencies?
A. thermal light
B. ultraviolet light
C. solar light
D. infrared light
Answer: | D |
Ionic, molecular, covalent, and metallic are major types of what state of matter?
A. liquid
B. gas
C. solids
D. plasma
Answer: | C |
What forces keep the moon orbiting the earth?
A. cosmic
B. gravitational
C. polar
D. magnetic
Answer: | B |
Snow and ice may also undergo which process where there is intense sunlight, very cold temperatures, and dry winds?
A. sublimation
B. crystalline
C. increasefixation
D. amplification
Answer: | A |
Electromagnets can be controlled by controlling what type of current?
A. magnetic
B. negative
C. positive
D. electric
Answer: | D |
The rate of evolution is influenced by the rate of changes to what?
A. the environment
B. dna
C. migration
D. the earth
Answer: | A |
What do you call a device that produces a very focused beam of visible light of just one wavelength and color?
A. light meter
B. laser
C. optical diffuser
D. fusion relay
Answer: | B |
Bubbles in bread dough are created by what gas produced during alcoholic fermentation?
A. acid dioxide
B. combustion dioxide
C. carbon dioxide
D. yeast dioxide
Answer: | C |
What is the capacity to cause change?
A. gravity
B. temperature
C. mass
D. energy
Answer: | D |
Ocean currents transfer heat from the equator towards what locations?
A. east and west
B. continents
C. tropical zones
D. poles
Answer: | D |
In sexual reproduction, two of what unite to produce an offspring?
A. spores
B. chromosomes
C. DNA strands
D. gametes
Answer: | D |
What are the ends of long bones called?
A. cartilage
B. marrow extension
C. appendage
D. epiphysis
Answer: | D |
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