Praxis II General Science (5435) Practice Test

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• What is the primary role of chloroplasts in plant cells?
• What is the main gas responsible for the greenhouse effect on Earth?
• Which of the following is the best description of mineraloids?
• What type of rock forms from the cooling and solidification of magma or lava?
• What form of energy is stored when an animal takes in more energy than it uses over time?
• Which statement is true regarding the accuracy and precision of two classroom laboratory balances?
• Which of the following natural resources is NOT used in the manufacturing of glass?
• Which of the following statements correctly describes a similarity or difference between rocks and minerals?
• Which type of biological macromolecule are enzymes predominantly?
• What is required for the activity of DNA polymerase during DNA replication?
• Which of the following layers of the earth make up the lithosphere?
• Which property primarily differentiates a solid from a liquid?
• Which substance is most likely to be a solid at standard temperature and pressure (STP)?
• What constitutes a pure substance?
• All of the following is NOT one of the five major physical properties of minerals?
• What relationship does Graham's law determine between two different materials?
• Which metabolic compound consists only of carbon, hydrogen, and oxygen?
• Which of the following is NOT considered an environmental impact of an irrigation scheme that draws water from a river?
• Which statement is NOT true about hypotheses?
• Which of the following is a drawback of solar energy?
• Which part of the cell is responsible for regulating what enters and exits?
• Which of the following is a solute?
• What does kinetic molecular theory explain?
• What is the current through a resistor of 20.0 ohms if the voltage is 6.0 volts?
• How is the number 0.0034050 expressed in scientific notation?
• Which number has 4 significant figures?
• What is the symbol for a calcium ion?
• Which of the following is NOT a recommended storage practice for laboratory chemicals?
• What are pure substances that consist of more than one type of atom called?
• What is the process by which an unstable atomic nucleus loses energy?
• What is true of the enzyme telomerase?
• What is the most common type of star in the universe?
• The hydrogen bonds in water contribute to its ability to serve as what?
• How many moles of O2(g) are needed to produce 100.0 moles of 2Al2O3(s) in the reaction 4Al(s) + 3O2(g) → 2Al2O3(s)?
• Which of the following correctly describes cloud formation?
• What is the unit of measure for electrical resistance?
• Which of the following is a type of electromagnetic radiation?
• What is Newton's second law of motion?
• What is the primary function of the respiratory system?
• What is a series of events that describes the sequence of energy transfer in an ecosystem?
• What is the term for the amount of matter in an object?
• Which structure protects the cell and controls the movement of substances in and out of the cell?
• Which planet is known for having a prominent ring system?
• What is a genotype?
• What type of reaction is represented by Cu(s) + 2AgNO3(aq) → 2Ag(s) + Cu(NO3)2(aq)?
• In general, where in the periodic table of elements are the elements with the largest atomic radii located?
• Which type of cell has a peptidoglycan cell wall?
• In physics, what is pressure?
• Which of the following is a source of nonrenewable energy?
• According to the Dana classification system, minerals that contain the anion SO(4)(2-) are classified as which type of chemical class?
• What is the most abundant element in the universe?
• Which color of light has the highest frequency?
• Which organ is responsible for filtering blood in the human body?
• What is the process by which plants convert sunlight into chemical energy called?
• What conclusion can be drawn about the effects of solute concentration on vapor pressure?
• What provides the energy to create high-energy electrons during photosynthesis?
• How do enzymes affect reaction rates in biochemical pathways?
• Which law states that energy cannot be created or destroyed?
• Which option correctly describes the image formed by a double concave lens?
• Which of the following terms describes the phenomenon of organisms adapting to their environment over time?
• What is the term for the temperature at which a liquid turns into a gas?
• Which of the following statements is NOT generally true regarding solubility?
• What is the primary source of energy for Earth's climate system?
• Which type of plant is most likely to perform CAM photosynthesis?
• What property determines how easily a mineral can be scratched?
• What term is used to describe the maximum population size that an environment can sustain?
• During which phase is genetic variation introduced in plants and animals?
• Which organelle is known as the powerhouse of the cell?
• Which of the following is the substrate for DNA ligase?
• In genetics, what is the term for different forms of a gene?
• What term describes the variety of life in a particular habitat or ecosystem?
• Between which two planets is the asteroid belt located?
• What physical state of matter has a definite shape and volume?
• Which of the following mutations is most likely to have a dramatic effect on the sequence of a protein?
• Which molecule is believed to have acted as the first enzyme in the early development of life on Earth?
• What is the pH range of acidic solutions?
• Which enzyme in DNA replication is a potential source of new mutations?
• Which form of radiation is most strongly absorbed by skin?
• What type of energy is stored in an object due to its position or arrangement?
• In relation to the water cycle, which statement concerning transpiration is NOT true?
• How does the loss of biodiversity impact the environment and society?
• Which of these minerals would have the lowest score on the Mohs scale?
• What form of energy is primarily involved in the breaking and forming of chemical bonds?
• Which general statement concerning ideal gases is true?
• According to the geologic time scale, which of the following statements is NOT true?
• Which of the following apparent colors of stars indicates the coolest temperature?
• Which of the following is not a characteristic of enzymes?
• Which of the following statements about the moon is NOT true?
• What phenomenon explains why a rainbow is formed?
• What does the energy of a photon depend on?
• What is a negative impact of reservoirs or dams?
• During the process of sublimation, a substance transitions from which state directly to gas?
• Which of the following is a serious direct impact of climate change?
• Which of the following molecules exhibits ionic bonding?
• Which type of biological molecule are enzymes primarily composed of?
• What does the process skill of concluding involve?
• Which type of rock is formed from the cooling and solidification of magma?
• A gas at constant volume is cooled. What can be concluded about the gas?
• Which gas is most abundant in the Earth's atmosphere?
• Which type of plant does not produce fruits?
• Which gas is produced during photosynthesis?
• What is one major drawback of geothermal energy?
• What is the correct procedure to prepare 100.0 ml of 3.00 M HCl solution from an 18.0 M HCl stock solution?
• Which statement concerning earthquakes is NOT true?
• Which of the following is NOT one of the five major physical properties of minerals?
• Which of the following is an environmental concern associated with hydraulic fracturing (fracking)?
• What is the correct expression of 91,000 x 87,000 in scientific notation and significant figures?
• What is the term for the change in velocity over time in physics?
• Which element has the atomic symbol "O"?
• In the food chain, what role do herbivores play?
• What scientist is famous for the theory of relativity?
• Which statement regarding the principle of uniformitarianism is true?
• What is the primary purpose of a renewable energy resource?
• Which of the following has the potential for negative impacts such as soil contamination and leachate?
• What is the common state of matter in which molecules are closely packed but can still flow?
• Which of the following statements is true concerning the calcium ion Ca(2+)?
• Which of the following is a source of renewable energy?
• Which of the following is NOT a result of ozone layer depletion?
• When a solid melts, which statement is true regarding the enthalpy and entropy changes?
• Which subskill best fits the process skill of observing?
• Which of the following is NOT a factor as to why lakes don't freeze solid in winter?
• Which layer of the Earth is made up of molten rock?
• If the current through an electromagnet's coil is doubled, what is the resulting lifting force if the original force is 5 N?
• What happens to heat during the freezing of a liquid?
• In which phase of meiosis is the synaptonemal complex present?
• Which substance has a pH closest to 1?
• What is the chemical formula for table salt?
• Which temperature scales have exactly 100 degrees between the freezing point and the boiling point of water?
• Which of the following activities has impacted society with improved weather forecasting, development of a global positioning system, and the development of lightweight materials?
• In chemistry, what does a catalyst do?
• To which class of minerals do opal, corundum, magnetite, and quartz belong?
• What describes how the human ear perceives the amplitude of a sound wave?
• What process do cells use to produce energy in the absence of oxygen?
• Which best describes igneous rock?
• According to the Dana classification system, gold, silver, and copper belong to which class?
• Which of the following sets of quantities are equivalent?
• Which statement is true about the properties of liquids and gases?
• Which organelle is known as the powerhouse of the cell?
• What is an ecosystem?
• What is Avogadro's number?
• Which organelles in plants contain pigments that provide color to leaves?
• What is the result of lactic acid fermentation during intense exercise?
• What is the basic unit of life in all living organisms?
• Which of the following is an example of a chemical change?
• What best describes the relationship of a low positive correlation between two sets of data?
• What is the name of the combination of DNA with histones?
• Which planet is known as the "Red Planet"?
• Which of the following statements regarding the layers of the atmosphere is NOT true?
• According to Newton's Law of Universal Gravitation, what happens to the force of attraction between two objects if the distance between them is doubled?
• What is the best prediction for solubility at 150 degrees Celsius for KBr in water?
• According to Coulomb's Law of Electric Force, which statement is true?
• Which statement regarding chemiosmosis in mitochondria is incorrect?
• Which component of an ecosystem includes both living and non-living elements?
• Which of the following is NOT a correct representation of the average salinity of seawater?
• What is the primary component of Earth's inner core?
• What type of bond is formed between two atoms when they share electrons?
• How much energy is approximately transferred to the third trophic level in a terrestrial ecosystem that has producers utilizing 6,000 kilocalories per square meter per year?
• Which of the following represents an alpha particle?
• Which of the following substances would most likely dissolve in a nonpolar solvent?
• What does homeostasis refer to?
• What is the purpose of a control group in an experiment?
• What is the volume of a 378 gram block of quartz that has a density of 2.65 g/cm³?
• Which of the following is a type of physical weathering?
• The breakdown of a disaccharide releasing energy stored as ATP is an example of what type of reaction?
• What is the most immediate effect of acid rain?
• Which of the following characteristics is consistent with an acid?
• Which of the following is a benefit of wind energy?
• What is the primary advantage of using biofuels as an energy source?
• A mineral's true color is observed by...
• Which of the following is NOT true concerning correlation?
• If a material has a half-life of 2 years, how much of a 1 kg sample remains after 8 years?
• Which factor contributes to the formation of metamorphic rocks?
• If the specific heat of copper is experimentally determined to be 0.410 L/gC, what is the percent error from the known value of 0.385 j/gC?
• Which of the following descriptions concerning air masses is true?
• What is the name of the compound represented by CuCl2?
• Which process describes the movement of water through a semi-permeable membrane?
• Which phenomenon describes the increase in Earth's average surface temperature?
• In which type of reaction do substances combine to form one product?
• Under what conditions will light undergo total internal reflection?
• Which of the following is a negative effect of groundwater or aquifer depletion?
• Which process describes the flow of energy through an ecosystem?
• What is the energy called that is associated with the motion of an object?
• Which gas is most commonly responsible for causing acid rain?
• Which statement about the states of matter is NOT true?
• Which mineral is known for its perfect cleavage?
• Which of the following subatomic particles has the smallest mass?
• What forms the backbone of DNA?
• What happens to water's density as it freezes?
• Who formulated the periodic law?
• Which part of the human brain is responsible for coordination and balance?
• According to the kinetic theory of matter, which of the following statements is true?
• What do prokaryotic and eukaryotic cells have in common?
• Which enzyme is required for separating the DNA molecule into two strands during replication?
• Which element has the highest electronegativity on the periodic table?
• What is the atomic number of carbon?
• How do enzymes catalyze biochemical reactions?
• What is the main purpose of the scientific method?
• How many neutrons are contained in an atom of the uranium isotope represented by (238/92) U?
• Which of the following statements is NOT true about the period of a simple pendulum?
• What is an example of convection as a method of heat transfer?
• Which process is responsible for transforming light energy into chemical energy?
• What is the process of the water cycle that involves the transformation of water vapor back into liquid?
• What scientific principle states that matter cannot be created or destroyed?
• According to Kepler's Laws of Planetary Motion, which of the following statements is true?
• What is the primary process by which plants convert sunlight into chemical energy?
• What is the main component of the Earth's inner core?
• What kind of energy transformation occurs when a light bulb is switched on?
• What are the two main types of evidence used to support the theory of evolution?
• Which type of radioactive emission results in an increase in atomic number?
• What is the best description of pressure?
• In biology, what does DNA stand for?
• In heavily exercising muscles, which metabolic process is activated to deal with high NADH levels?
• Which of Newton's laws explains why seatbelts are needed?
• Which of the following states the correct atmospheric percentages of the major gases?
• What is a defining characteristic of acids?
• In an experiment determining the effect of a nonvolatile solute on boiling point, what is the independent variable?
• Which of the following is a scalar quantity?
• What is the primary function of white blood cells in the human body?
• In which phase of the cell cycle does DNA replication occur?
• Which soil or rock type has a high porosity and low permeability?
• Which nutrient in soil is most crucial for plant growth and development?
• What general trend does electronegativity follow in the Periodic Table?
• Which process is primarily responsible for the water cycle's movement of water from the earth's surface back into the atmosphere?
• Which of the following factors tends to increase the melting point of a solid?
• Which of the following statements is NOT true regarding exothermic and endothermic processes?
• What is the main driver of tectonic plate movement?
• A worker applies a force of 500.0 N to a pulley for a distance of 1.5 m to move a crate that weighs 1000.0 N a distance of 0.5 m. What is the ideal mechanical advantage of this pulley?
• What type of energy is stored in food?
• What structures are formed when the plasma membrane engulfs a particle from outside the cell?
• When one mole of oxygen gas and two moles of hydrogen are combined in a sealed container at STP, what is true?
• What is the term for a length of DNA coding for a particular protein?
• What is kinetic energy?