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The body does not exist in isolation. there is a constant input of water and electrolytes into the system. while osmoregulation is achieved across membranes within the body, excess electrolytes and wastes are transported to the kidneys and excreted, helping to maintain this?
A. vacuum balance
B. physical balance
C. nucleic balance
D. osmotic balance
Answer:
|
D
|
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If a sperm fertilizes an egg of a seed plant, the zygote grows into what?
A. homostatic embyro
B. progeny embryo
C. pulsation embryo
D. sporophyte embryo
Answer:
|
D
|
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|
Metabolism produces waste energy in the form of heat, which helps what type of animal conserve and maintain heat at a relatively constant body temperature?
A. warm-blooded (endotherm)
B. amphibian
C. lizard
D. cold-blooded (ectotherm)
Answer:
|
A
|
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Electromagnets can be turned on or off and their strength can be changed by controlling what?
A. inducing current
B. electric current
C. steady current
D. powered current
Answer:
|
B
|
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In which part of a bird stomach is food stored, soaked and mechanically ground?
A. Gall bladder
B. pancreas
C. digestion
D. gizzard
Answer:
|
D
|
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|
Physical science can be defined as the study of matter and what?
A. energy
B. space
C. time
D. natural forces
Answer:
|
A
|
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|
What is the term for animals that defend their area?
A. territorial
B. contain
C. predatory
D. Grazing
Answer:
|
A
|
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What is the main reason for weather change?
A. moving air masses
B. seasons
C. moving energy masses
D. climate change
Answer:
|
A
|
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|
Most lipids in your diet should be what type, found mainly in plant sources and also in fish?
A. saturated
B. fat
C. aromatic
D. unsaturated
Answer:
|
D
|
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Crude oil is a mixture of different types of what?
A. contaminants
B. hydrocarbons
C. fats
D. greenhouse gases
Answer:
|
B
|
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What is the representative particle in pure metals?
A. neutron
B. the atom
C. electron
D. quark
Answer:
|
B
|
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What takes place in the organelle known as the chloroplast, which distinguishes animal from plant cells?
A. digestion
B. perspiration
C. photosynthesis
D. reproduction
Answer:
|
C
|
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Organic and biochemical equations show the initial and final products of the equation, respectively known as the reactants and what else?
A. reactors
B. consumers
C. dividends
D. products
Answer:
|
D
|
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|
What is used during every step of oil production, from exploration to distribution?
A. energy
B. water
C. coal
D. robots
Answer:
|
A
|
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|
When do the eggs in a female's ovaries start to mature?
A. puberty
B. adolescence
C. maturity
D. adulthood
Answer:
|
A
|
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|
Drilling wells into hot rocks to release hot water or steam is an example of what kind of power plant?
A. geothermal
B. hydroelectric
C. solar
D. fossil fuel
Answer:
|
A
|
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What is the state of matter that resembles a gas but has certain properties that a gas does not have called?
A. liquid
B. plasma
C. fluid
D. solid
Answer:
|
B
|
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|
What enthalpy change is observed in an exothermic reaction?
A. positive
B. no change
C. entropy
D. negative
Answer:
|
D
|
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|
What does hypoxic mean?
A. standard oxygen level
B. higher oxygen
C. low oxygen
D. Oxygen rate
Answer:
|
C
|
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|
Who has proposed that cigarette advertising in all media be banned entirely?
A. schools
B. parents
C. teachers
D. antismoking groups
Answer:
|
D
|
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|
What is the reaction called when an acid and a base react?
A. decomposition
B. activation
C. neutralization
D. oxidation
Answer:
|
C
|
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|
What is the term for when clumped solids sink to the bottom of the water?
A. sedimentation
B. Clumping
C. sediment
D. Foundation
Answer:
|
A
|
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|
A wildfire clears a forest of vegetation and animal life, returning their nutrients to the ground leaving a foundation for rapid recolonization. what is this a classic example of?
A. secondary succession
B. typical succession
C. cause succession
D. primary succession
Answer:
|
A
|
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|
What system of the body can specifically protect you from pathogens and other things that might make you ill?
A. immune
B. cardiovascular
C. digestion
D. muscle
Answer:
|
A
|
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|
During glycolysis, each glucose molecule is broken down into two molecules of what compound?
A. chlorophyll
B. cellulose
C. sugar
D. pyruvate
Answer:
|
D
|
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|
The single circular dna chromosome of bacteria is not enclosed in what, but instead occupies a specific location called the nucleoid within the cell?
A. nucleus
B. protons
C. atom
D. molecules
Answer:
|
A
|
sciq
|
Plaque is surgically removed from the walls of a vessel in which surgery?
A. arthroscopy
B. discectomy
C. lumpectomy
D. endarterectomy
Answer:
|
D
|
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|
Where does most of the earth's energy come from?
A. its atmosphere
B. magnetic field
C. its core
D. sun
Answer:
|
D
|
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|
What is the primary energy source for cells?
A. protein
B. sucrose
C. glucose
D. glycogen
Answer:
|
C
|
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|
What is a simple sugar such as fructose or glucose?
A. monosaccharide
B. galactose
C. disaccharide
D. polysaccharides
Answer:
|
A
|
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|
Gram-negative bacteria have a cell wall made of peptidoglycan, whereas gram-positive bacteria have a cell wall made of what?
A. hydrolic acid
B. solmization acid
C. choanocyte acid
D. lipoteichoic acid
Answer:
|
D
|
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|
What term is used to describe muscle fibers that allows muscles to contract?
A. organelle
B. organisms
C. ligaments
D. fluorescence
Answer:
|
A
|
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|
What are the main organs for breathing in a mammal?
A. gills
B. intestines
C. nostrils
D. lungs
Answer:
|
D
|
sciq
|
What class of animals have four limbs and produce amniotic eggs?
A. mammals
B. insects
C. reptiles
D. amphibians
Answer:
|
A
|
sciq
|
No chemical process on the planet can match the output of what process?
A. pollination
B. glycolysis
C. photosynthesis
D. sexual reproduction
Answer:
|
C
|
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|
Which disease afflicts children who don't get enough calcium during their bone formation stage?
A. rickets
B. sids
C. cancer
D. rabies
Answer:
|
A
|
sciq
|
What kind of reactions between an acid and a base yield a salt and water?
A. evaporation
B. oxidation
C. neutralization
D. distillation
Answer:
|
C
|
sciq
|
What human bodily function does cellulose help with?
A. moves food wastes
B. reproduction
C. sleep
D. stops food wastes
Answer:
|
A
|
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|
What are large vesicles derived from the endoplasmic reticulum and golgi apparatus?
A. chloroplasts
B. vacuoles
C. alleles
D. tubules
Answer:
|
B
|
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|
The burning of charcoal is what type of reaction?
A. condensation
B. combustion
C. evaporation
D. physical
Answer:
|
B
|
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|
What is responsible for the physical changes of puberty?
A. adrenaline
B. testosterone
C. caffeine
D. nicotine
Answer:
|
B
|
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|
Unlike prokaryotes, eukaryotes have what?
A. cell wall
B. cell membrane
C. golgi apparatus
D. cell nucleus
Answer:
|
D
|
sciq
|
An electron is accelerated from rest through a potential difference of what?
A. watts
B. volts
C. joules
D. amperes
Answer:
|
B
|
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|
What is the most commonly used source of energy in the world?
A. oil
B. electricity
C. wind
D. water
Answer:
|
A
|
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|
Silk and cotton are examples of what type of fibers?
A. mechanical
B. natural
C. artificial
D. coral
Answer:
|
B
|
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|
Tuna have been shown to contain high levels of what metal?
A. cadmium
B. iron
C. titanium
D. mercury
Answer:
|
D
|
sciq
|
What does the esophagus produce for lubrication?
A. mucous
B. bile
C. phloem
D. synovial fluid
Answer:
|
A
|
sciq
|
What type of amplitudes and wavelengths avoid detection in deep water?
A. low and long
B. high and long
C. low and wide
D. high and wide
Answer:
|
A
|
sciq
|
What is the smallest main part of the brain?
A. the cortex
B. the cerebellum
C. the claw
D. the stem
Answer:
|
D
|
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|
Adding the number of protons plus the number of neutrons in an atom, decides it's approximate mass, what is another word for this value?
A. atomic mass
B. real number
C. electron count
D. atomic number
Answer:
|
D
|
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|
Why do people build dams and levees?
A. increase flooding
B. prevent flooding
C. store drinking water
D. to horde the water
Answer:
|
B
|
sciq
|
What runs through the penis and opens to the outside at the tip of the penis?
A. fallopian tube
B. the urethra
C. prostate gland
D. vas deferens
Answer:
|
B
|
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|
What is the chemical name of table sugar?
A. codeine
B. potassium
C. cellulose
D. sucrose
Answer:
|
D
|
sciq
|
What enzyme is found in the small intestine catalyzes the hydrolysis of lactose?
A. amylase
B. lipase
C. lactase
D. elastases
Answer:
|
C
|
sciq
|
While smooth muscle tissue can regenerate from stem cells called pericytes, dead cardiac muscle tissue is replaced by what type of tissue?
A. Maximum
B. scar tissue
C. neon tissue
D. embryo tissue
Answer:
|
B
|
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|
What natural process allows water to return again to the earth’s surface?
A. wind
B. currents
C. erosion
D. precipitation
Answer:
|
D
|
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|
What is a spectrometer able to produce from starlight?
A. radio waves
B. aspect
C. spectrum
D. exposure
Answer:
|
C
|
sciq
|
Without what food chain component, organic wastes and dead organisms would pile up everywhere, and their nutrients would no longer be recycled?
A. acids
B. probiotics
C. decomposers
D. nitrates
Answer:
|
C
|
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|
What are made on ribosomes in the cytoplasm?
A. enzymes
B. lipids
C. proteins
D. cells
Answer:
|
C
|
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|
How do you test a hypothesis?
A. think of how they would work
B. write things on paper
C. conduct experiments
D. ask a co-worker about it
Answer:
|
C
|
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|
What kind of power plant uses energy to heat water that becomes steam and spins turbines?
A. wind
B. nuclear power plants
C. hydroelectric
D. coal
Answer:
|
B
|
sciq
|
What is defined as the product of a force times the distance over which the force acts?
A. matter
B. energy
C. motion
D. work
Answer:
|
D
|
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|
Visible light has what that can be detected by the human eye?
A. dimensions
B. colors
C. wavelengths
D. patterns
Answer:
|
C
|
sciq
|
Chemical elements and water are recycled through what cycle?
A. biogenic
B. biogeochemical
C. evaporation
D. dynamical
Answer:
|
B
|
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|
The anterior muscles of the neck facilitate swallowing and what else?
A. hearing
B. crying
C. speech
D. perspiration
Answer:
|
C
|
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|
How many directions can ions flow along the axon?
A. three
B. one
C. two
D. six
Answer:
|
B
|
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|
Ionic, covalent, and hydrogen are three important types of what type of interaction between different types of atoms?
A. conflicts
B. forms
C. levels
D. bonds
Answer:
|
D
|
sciq
|
In classical physics, momentum is a simple product of mass and this?
A. direction
B. acceleration
C. velocity
D. speed
Answer:
|
C
|
sciq
|
What compounds contain only carbon and hydrogen?
A. molecules
B. hydrocarbons
C. carbonates
D. particles
Answer:
|
B
|
sciq
|
Synthetic and natural rubber, styrofoam and plastic are examples of organic what?
A. metals
B. microbes
C. solutions
D. polymers
Answer:
|
D
|
sciq
|
Some viruses carry a few viral enzyme molecules within their what?
A. capsids
B. DNA
C. plastids
D. hormones
Answer:
|
A
|
sciq
|
Dietary proteins are broken down into what components when food is digested?
A. polymer acids
B. protein acids
C. organic acids
D. amino acids
Answer:
|
D
|
sciq
|
What kind of plants do not need adaptations for absorbing, transporting, and conserving water?
A. terrestrial plants
B. normal plants
C. desert plants
D. aquatic plants
Answer:
|
D
|
sciq
|
Organisms cannot live alone, needing other organisms to survive; what is this relationship called?
A. coexistence
B. dominance
C. independence
D. interdependence
Answer:
|
D
|
sciq
|
What force pulls bodies with mass together?
A. gravity
B. thermal
C. solar
D. isolation
Answer:
|
A
|
sciq
|
If a fixed amount of gas maintains a perfectly inversely proportional relationship between volume and pressure, then what else must be constant about the gas?
A. friction
B. temperature
C. density
D. surface tension
Answer:
|
B
|
sciq
|
What conveys signals received by the eye to the brain?
A. sciatic nerve
B. optic nerve
C. sensory nerve
D. motor nerve
Answer:
|
B
|
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|
When cardiac muscle contracts, the heart does what?
A. pumps blood
B. cardiac arrest
C. heart murmur
D. irregular heartbeat
Answer:
|
A
|
sciq
|
Do placental mammals give birth to relatively small or large fetuses?
A. small
B. they don't give birth
C. large
D. neither
Answer:
|
C
|
sciq
|
What is the largest class of elements?
A. oils
B. metals
C. organics
D. acids
Answer:
|
B
|
sciq
|
Liquid hcl can be used to do what to the ph of a swimming pool?
A. raise it
B. increase it
C. lower it
D. heighten it
Answer:
|
C
|
sciq
|
The three greatest proximate threats to biodiversity are habitat loss, overharvesting, and introduction of what?
A. carbon monoxide
B. exotic species
C. carbon dioxide
D. solar radiation
Answer:
|
B
|
sciq
|
The sun’s energy is converted to chemical energy by a what?
A. plant
B. bacterium
C. mammal
D. amphibian
Answer:
|
A
|
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|
What are antacids comprised of?
A. solids
B. bases
C. gases
D. acids
Answer:
|
B
|
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|
Where can neurohormones act within the body?
A. throughout
B. digestive process
C. nerve endings
D. brain only
Answer:
|
A
|
sciq
|
What are composed of a phosphate group, a sugar, and one of five different nitrogenous bases.
A. carotenoids
B. cytotypes
C. nucleotides
D. prokaryotes
Answer:
|
C
|
sciq
|
Scientists measure the gases that escape from a volcano to predict what?
A. eruptions
B. floods
C. snowfall
D. storms
Answer:
|
A
|
sciq
|
What molecule is made of two hydrogen atoms and one oxygen atom?
A. water
B. lipids
C. carbohydrate
D. Oxygen
Answer:
|
A
|
sciq
|
What occurs when muscle fibers get shorter?
A. muscle contraction
B. muscle extension
C. muscle tension
D. muscle diffusion
Answer:
|
A
|
sciq
|
The nitrogen cycle includes air, soil, and what?
A. water
B. heat
C. decomposers
D. living things
Answer:
|
D
|
sciq
|
As the organism grows more sophisticated, what happens to the process of gene regulation?
A. degenerates
B. becomes simplified
C. becomes more complex
D. becomes fractured
Answer:
|
C
|
sciq
|
Rh antibodies can prove dangerous if they cross what barrier in pregnancy?
A. embryo
B. fungal
C. placental
D. stomach
Answer:
|
C
|
sciq
|
Galaxies can be spiral, elliptical, or which other type?
A. oblong
B. simple
C. irregular
D. vertical
Answer:
|
C
|
sciq
|
What often involves the loss of hydrogen, the gain of oxygen, or the loss of electrons?
A. oxidation
B. decomposition
C. carbonation
D. precipitation
Answer:
|
A
|
sciq
|
Luster, malleability, ductility, and conductivity are all properties of which kind of material?
A. ores
B. nonmetals
C. wood
D. metals
Answer:
|
D
|
sciq
|
Anosmia, the loss of what sense, is often the result of the olfactory nerve being severed?
A. general sensitivity
B. balance
C. smell
D. taste
Answer:
|
C
|
sciq
|
Which planet is the kuiper belt closest to?
A. neptune
B. Venus
C. Jupiter
D. Mars
Answer:
|
A
|
sciq
|
Does warm air sit above or below cooler air in the troposphere?
A. above
B. near
C. below
D. adjacent
Answer:
|
C
|
sciq
|
What is the name for the stratospheric gas layer that protects living things from uv radiation?
A. ozone layer
B. atmospheric layer
C. toposphere
D. carbon layer
Answer:
|
A
|
sciq
|
All atoms have equal numbers of what two particles?
A. nuclei and neutrons
B. electrons and neutrons
C. photons and protons
D. electrons and protons
Answer:
|
D
|
sciq
|
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