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The strength of bases is measured on what scale?
A. litmus test
B. ph scale
C. acid test
D. pneumatic scale
Answer: | B |
What type of isomers contain the same number of atoms of each kind but differ in which atoms are bonded to one another?
A. unique isomers
B. constitutional isomers
C. structural isomers
D. different isomers
Answer: | C |
What is the gas that gives rotten eggs and sewage their distinctive smell?
A. hydrogen peroxide
B. calcium sulfide
C. methane
D. hydrogen sulfide
Answer: | D |
What two values does a blood pressure reading include?
A. high and low
B. cholesterol and systolic
C. systolic and diastolic
D. biotic and abiotic
Answer: | C |
In humans, what period lasts from the ninth week of development until birth?
A. third trimester
B. development period
C. fetal period
D. plasma period
Answer: | C |
Where are protons found in the atom?
A. within electrons
B. in the nucleus
C. outside the nucleus
D. in the orbital
Answer: | B |
What is produced when haploid gametes fuse in sexual reproduction?
A. cell cluster
B. isolated zygote
C. deformity
D. diploid zygote
Answer: | D |
What are the two different types of vascular tissues called?
A. biotic and abiotic
B. epidermis and dermis
C. acid and base
D. xylem and phloem
Answer: | D |
During which stage of development do all the major organs begin to form?
A. transgenic
B. nascent
C. embryonic
D. third trimester
Answer: | C |
At the anode, liquid chloride ions are oxidized to what?
A. chlorine gas
B. Heavy Gas
C. nitrogen gas
D. elemental gas
Answer: | A |
A diploid cell contains two sets of what?
A. chromosomes
B. neutrons
C. atoms
D. ribosomes
Answer: | A |
On what basis are lipoproteins classified?
A. weight
B. mass
C. density
D. diameter
Answer: | C |
The two ovaries are small, oval organs on either side of what part of the body?
A. lungs
B. pancreas
C. heart
D. uterus
Answer: | D |
Gas exchange during respiration occurs primarily through what?
A. activation
B. diffusion
C. secretion
D. vaporization
Answer: | B |
Enzymes in the stomach and small intestine break down proteins into what components?
A. lactic acids
B. amino acids
C. antioxidants
D. atoms
Answer: | B |
Organisms incapable of photosynthesis that must therefore obtain energy and carbon from food by consuming other organisms are called what?
A. heterotrophs
B. chemoautotrophs
C. autotrophs
D. photoautotrophs
Answer: | A |
What allows theories to be widely accepted?
A. theory
B. hypothesis
C. evidence
D. observation
Answer: | C |
Elements that specifically are noted to have properties of both metals and nonmetals are known as what?
A. alkali metals
B. compund metals
C. alloys
D. metalloids
Answer: | D |
What is the measure of change in velocity of a moving object?
A. vibration
B. kinetic energy
C. acceleration
D. transmission
Answer: | C |
What celestial events are the source of elements heavier than iron?
A. supernovas
B. Space
C. neutrons
D. galaxies
Answer: | A |
Algae are similar to plants in that they both produce their food through what process?
A. mitosis
B. photosynthesis
C. hydrolysis
D. cell division
Answer: | B |
What do fungi produce to digest nutrients?
A. amino
B. pores
C. sporozoans
D. exoenzymes
Answer: | D |
When light passes from one medium to another, it changes what?
A. speed
B. color
C. temperature
D. density
Answer: | A |
The distance between the crests of electromagnetic waves is called what?
A. variation
B. wavelength
C. crest
D. trough
Answer: | B |
People with celiac disease have an immune response to what, which ultimately leads to malnutrition, cramping, and diarrhea?
A. lactose
B. fish
C. gluten
D. seeds
Answer: | C |
Chlorophyll is used in what food-making process that plants carry out?
A. digestion
B. photosynthesis
C. colorization
D. isolation
Answer: | B |
What does an ammeter measure the flow of?
A. current through a circuit
B. wind
C. magnetic fields
D. water under pressure
Answer: | A |
Burning forests, growing rice and raising livestock all cause a release of what into the atmosphere?
A. glucose gases
B. oxide gases
C. carbonate gases
D. greenhouse gases
Answer: | D |
What type of pollution comes from sewage, storm drains, septic tanks, boats, and runoff from yards?
A. social
B. urban
C. municipal
D. collective
Answer: | C |
What does oil do when mixed with water?
A. forms droplets
B. dissolves
C. dissappears
D. precipitates
Answer: | A |
What is the term for the movement of individuals out of a population?
A. colonization
B. immigration
C. emigration
D. succession
Answer: | C |
What might a scientist do to confirm the work of another?
A. question their methods
B. study their work
C. develop a completely different experiment
D. replicate their work
Answer: | D |
Polar molecules result from differences in electronegativity of what in the molecule?
A. atoms
B. protons
C. ions
D. iron
Answer: | A |
A diver's air bubbles increase in size as he approaches the surface because what decreases?
A. water direction
B. water weight
C. water energy
D. water pressure
Answer: | D |
Positive charge is mostly found in what part of an atom?
A. ions
B. nucleus
C. neutrons
D. electron shell
Answer: | B |
In the lens makers' equation, diverging lenses and virtual images are associated with what kinds of numbers?
A. variable numbers
B. negative numbers
C. fractional numbers
D. positive numbers
Answer: | B |
What is another name for producers?
A. autotrophs
B. allergens
C. rotifers
D. plants
Answer: | A |
Consisting of a stigma, style, and ovary, the pistil of a flower is what type of organ?
A. female reproductive organ
B. female immune organ
C. female respiratory organ
D. female neural organ
Answer: | A |
Chewing insects such as dragonflies and grasshoppers have how many sets of jaws?
A. one
B. three
C. two
D. four
Answer: | C |
What kind of change occurs whenever matter changes into an entirely different substance with different chemical properties?
A. physical change
B. reversible change
C. chemical change
D. carbon change
Answer: | C |
What is a small, relatively simple single-celled organism called?
A. eukaryote
B. ribosome
C. amoeba
D. prokaryote
Answer: | D |
The golgi apparatus works like a mail room by receiving and sending what?
A. proteins
B. particles
C. enzymes
D. acids
Answer: | A |
Which part of the body has mucus and hair to trap dust and also warms and moistens air so to not harm lung tissue?
A. the tongue
B. the throat
C. the ear
D. the nose
Answer: | D |
What are the structures in the cytoplasm where proteins are made?
A. nucleus
B. ribosomes
C. chromosomes
D. prokaryotes
Answer: | B |
What is the key issue in the small-population approach?
A. disease variation
B. genetic variation
C. genetic mutation
D. alternative variation
Answer: | B |
What is the minimum depth in the aphotic zone?
A. 200 meters
B. 150 meters
C. 10 meters
D. 450 meters
Answer: | A |
What is the process by which plants gain energy and produce sugar?
A. chemosynthesis
B. respiration
C. photosynthesis
D. glycolysis
Answer: | C |
What are embedded in the membranes of b cells and bind a variety of antigens through their variable regions?
A. a.m. cell receptors
B. b.a.p cell receptors
C. er cell receptors
D. b cell receptors
Answer: | D |
A statement that describes what always happens under certain conditions in nature is also known as what?
A. hypothesis
B. scientific law
C. theory
D. scientific motion
Answer: | B |
What developmental stage do alligators lack that most other amphibians have?
A. Egg Stage
B. larval stage
C. metamorphosis
D. Tadpole stage
Answer: | B |
What attaches a muscle to a bone?
A. arteries
B. tendons
C. marrow
D. veins
Answer: | B |
What are two common weather characteristics of hurricanes?
A. high winds and snowfall
B. small winds and rainfall
C. low winds and sandstorms
D. high winds and rainfall
Answer: | D |
What kind of organism causes the often fatal lung disease tuberculosis?
A. bacteria
B. algae
C. pathogens
D. virus
Answer: | A |
Where do plates move apart in oceans and on land?
A. coastal zones
B. volcanic ridges
C. divergent plate boundaries
D. unsettled plate boundaries
Answer: | C |
Zeros that appear in front of all of the nonzero digits are called what?
A. left-end zeros
B. significant digits
C. non-numbers
D. zero sum game
Answer: | A |
What consists of thylakoid membranes surrounded by stroma?
A. a stem
B. a nucleus
C. a chloroplast
D. a photon
Answer: | C |
Portable amplifiers have batteries that store what type of energy?
A. mechanical energy
B. kinetic energy
C. chemical energy
D. carbon energy
Answer: | C |
The movement of ice causes glaciers to have cracks referred to as?
A. anomalies
B. crevasses
C. fissures
D. slides
Answer: | B |
A muscle can return to its original length when relaxed due to a quality of muscle tissue called what?
A. elasticity
B. reach
C. moisture
D. viscosity
Answer: | A |
What feature of the spine helps with flexibility and strength?
A. arrangement
B. shape
C. angle
D. curves
Answer: | D |
How does a cell's membrane keep extracellular materials from mixing with it's internal components?
A. provides a barrier
B. repels extracellular materials
C. destroys extracellular materials
D. absorbs extracellular materials
Answer: | A |
Respiratory development in the embryo begins around week 4. ectodermal tissue from the anterior head region invaginates posteriorly to form olfactory pits, which fuse with endodermal tissue of the developing pharynx. an olfactory pit is one of a pair of structures that will enlarge to become this?
A. fluid cavity
B. ey... | D |
Anything that occupies space and has mass is known as what?
A. solid
B. opaque
C. dense
D. matter
Answer: | D |
The temperature dependence of solubility can be exploited to prepare what solutions of certain compounds?
A. supersaturated
B. isolated
C. instantiated
D. mineralized
Answer: | A |
Glasses are mixtures of oxides, the main component of which is silica (sio2). silica is called the glass former, while additives are referred to as this?
A. glass actors
B. glass modifiers
C. natural modifiers
D. addition modifiers
Answer: | B |
What type of tissue produces and secretes several hormones involved in lipid metabolism and storage?
A. hormonal tissue
B. somatic tissue
C. adipose tissue
D. metabolism tissue
Answer: | C |
What is the process in which organ systems work to maintain a stable internal environment?
A. homeostasis
B. organ balance
C. ketosis
D. homogeneity
Answer: | A |
What must people with type 1 and type 2 diabetes frequently check?
A. muscle glucose levels
B. blood glucose levels
C. blood plasma levels
D. blood density levels
Answer: | B |
What is it called when two alleles are both expressed in the heterozygous individual?
A. low dominance
B. weak dominance
C. shared dominance
D. codominance
Answer: | D |
What part of a spider is equipped with poison glands?
A. baleen
B. pedipalps
C. chelicerae
D. vacuole
Answer: | C |
Esters are neutral compounds that undergo what process, which is a reaction with water?
A. replication
B. hydrolysis
C. osmosis
D. cellular respiration
Answer: | B |
Evolution occurs because of changes in what over time?
A. genomes
B. mitochondria
C. alleles
D. atoms
Answer: | C |
When does coal release most of its energy?
A. when forming
B. when falling
C. when burning
D. when compressed
Answer: | C |
What was once believed to be the smallest of all particles, as dalton's theory proposed?
A. neutron
B. atom
C. molecule
D. nucleus
Answer: | B |
The actinides are all what type of elements?
A. large
B. nuclear
C. multiple
D. radioactive
Answer: | D |
What type of feeders are sea lilies and feather stars?
A. suspension feeders
B. deposit feeder
C. silt feeders
D. bottom feeder
Answer: | A |
What are the proteins called that speed up biochemical reactions in cells?
A. carbohydrates
B. peptides
C. hormones
D. enzymes
Answer: | D |
What isotope of carbon is typically used to date ancient items?
A. carbon 12
B. nitrogen 14
C. uranium 14
D. carbon 14
Answer: | D |
What two planets is the asteroid belt found between?
A. Jupiter and Saturn
B. mars and jupiter
C. Jupiter and Earth
D. Mars and Earth
Answer: | B |
When wood is burned what kind of energy allows the wood to burn?
A. chemical
B. carbon
C. physical
D. radiation
Answer: | A |
The cubic crystal system is composed of how many different types of unit cells?
A. five
B. one
C. three
D. four
Answer: | C |
In which solution is the amount of dissolved material equal both inside and outside of the cell?
A. isotonic
B. supersaturated
C. hypotonic
D. exothermic
Answer: | A |
What element is the most common element in the universe?
A. carbon
B. helium
C. hydrogen
D. nitrogen
Answer: | C |
What is the term for anything that has mass and volume?
A. liquid
B. matter
C. gass
D. energy
Answer: | B |
What is in danger of happening when thick magma is formed?
A. continuous eruptions
B. explosive eruptions
C. earthquakes
D. focused eruptions
Answer: | B |
The important equation pv = nrt holds true for substances in what state of matter?
A. solids
B. liquids
C. gas
D. products
Answer: | C |
The measurement of the extent of something along its greatest dimension is its what?
A. depth
B. portion
C. length
D. stretch
Answer: | C |
What force explains why objects may float in water?
A. buoyant force
B. cool force
C. gravity force
D. warm force
Answer: | A |
Which organelle is made up of 5 to eight cup shaped, membrane covered stacks of discs known as cisternae?
A. vacuole
B. nucleus
C. endoplasmic reticulum
D. golgi apparatus
Answer: | D |
How many bones does the mammalian middle ear have?
A. two
B. twelve
C. four
D. three
Answer: | D |
What can echinoderms sense with their simple eyes?
A. colors
B. light
C. shapes
D. electricity
Answer: | B |
What do we call water that has been used for cleaning, washing, flushing, or manufacturing?
A. sewage
B. wastewater
C. groundwater
D. Grey water
Answer: | B |
What is the name for an area that is covered in water, or at least has soggy soil, during all or part of the year?
A. a crater
B. a wetland
C. coastal zone
D. a stream
Answer: | B |
Regulation of the reproductive system is a process that requires the action of hormones from which gland?
A. adrenal gland
B. pituitary gland
C. salivary gland
D. thyroid gland
Answer: | B |
What occurs when organisms acquire and pass on new traits from one generation to the next generation?
A. variation
B. birth
C. phenomenon
D. evolution
Answer: | D |
What process provides more than 99% of energy?
A. cellular respiration
B. glycolysis
C. nuclear fusion
D. photosynthesis
Answer: | D |
What tissue blocks entry of pathogens in mammals?
A. esophageal
B. dendritic
C. pathological
D. epithelial
Answer: | D |
What in the axils of leaves and stems give rise to branches?
A. chloroplasts
B. nodules
C. meristems
D. axillary buds
Answer: | D |
The existence of what tiny, fundamental particles of matter was first proposed in the 1960s?
A. molecules
B. neutrons
C. atoms
D. quarks
Answer: | D |
Animals that defend their area are generally known as what kinds of animals?
A. neutral
B. carnivores
C. mutants
D. territorial
Answer: | D |
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