Middle School Science Praxis Practice Test Exam Questions With 100% Correct Answers 2024

Middle School Science Praxis Practice Test Exam Questions With 100% Correct Answers 2024 How many significant figures are in the measurement 0.0120 m? - answerThree A block is accelerating along a flat surface under the action of a force applied parallel to the surface. If the magnitude of the applied force is doubled, then the magnitude of the block's acceleration will - answerDouble If a cell has 12 chromosomes, how many chromosomes will each of its daughter cells have after mitosis? - answer12 Which of the following best explains how igneous rocks are formed? - answerMolten material cools and hardens Which of the following compounds contains iron in the +3positive 3 oxidation state? A. FeO B. FeCl2 C. Fe2O3 D. Fe2O4 - answerFe2O3 What is a function of the ozone? - answerAbsorbing ultraviolet radiation In pea plants, the allele for purple flowers (Wuppercase W) is dominant to the allele for white flowers (wlowercase w). If a true-breeding, purple-flowered pea plant (WWuppercase W, uppercase W) is crossed with a true-breeding white-flowered pea plant (wwlowercase w, lowercase w), what percent of the progeny plants are expected to have white flowers? - answer0% Polypeptides are polymers formed by joining which of the following molecules into chains? - answerAmino Acids Order the following from the first appearance of organisms in the fossil record from earliest to most recent? Birds, Reptiles, Amphibians, Fish - answerFish, Amphibians, Reptiles, Birds Of the following elements, which occurs naturally as a diatomic molecule? - answerNitrogen Which of the following is equivalent to 1 × 10-3 g? A.0.0001 gram B.1 kilogram C.1 milligram D.100 micrograms - answer1 Miligram Which greenhouse gas is closely associated with livestock production? - answerMethane When the bones of the human arm and the bones of a bat wing are compared, many similarities are observed. - answerHomologous Structures Homologous Structures - answerWhen different species that have some similarity because they are derived from a common ancestor Convergent Evolution - answerWhen nonrelated or distantly related species have similar structures. The enzymes found in living organisms serve principally as - answerCatalysts Nebula - answerImmense cloud of gas (mainly hydrogen) and dust that is found in interstellar space Black Hole - answerRegion in space where the pulling force of gravity is so strong that light is not able to escape Comets - answerCosmic snowballs of frozen gases, rock and dust that orbit the sun Asteroid Belt - answerRegion of the solar system falling roughly between the planets Mars and Jupiter Br2B r 2, a red-brown liquid at 20°C20 degrees Celsius, is classified as - answerElement The Gram stain was developed to distinguish between types of - answerBacteria The position on Earth's surface that lies directly above the point inside Earth where an earthquake originates is known as the - answerEpicenter Focus - answerThe part of the earthquake where the rocks start to fracture P Waves - answerCompression Waves that travel through all parts of the Earth Love Waves - answerSlow Waves, Produced by very powerful Earthquakes Cause of Earthquake Faults - answerEarth's crust moving, upward, downward and sideways Normal Fault - answerLand is Pulling Apart Reverse Fault - answerLand is Coming Together Thrust Fault - answerFaults with less than a 45 degree angle that don't reach the surface San Andreas Fault - answerRight lateral strike slip fault Transform Fault - answerOccurs in the ocean when land is moving apart Example of an Organic Compound - answerSucrose Organic Compund - answerCompounds that contain the element Carbon Which item would drop first in the absence of air resistance? Aluminum Lead Iron - answerAll would land the same time A certain species of plant has bright red flowers. Which of the following most likely explains why the red color is considered an adaptation of the plant? - answerAids with pollination Since the lungs in many adult amphibians are small or even absent, upon which of the following do they mainly depend for gas exchange? - answerSkin Which of the following most accurately describes the direction in which all rivers flow? - answerFrom higher elevation to lower elevation How is tuberculosis contracted? - answerBacteria The pitch perceived by a musician listening to a sound is analogous to which of the following wave properties? - answerFrequency Commercial plant growers typically stimulate plants to bloom at a particular time of year by controlling the - answerlengths of the light and dark periods to which the plants are exposed