Praxis II Middle School Science 5440 Questions and Answers Latest Version Graded A+

Praxis II Middle School Science 5440 Questions and Answers Latest Version Graded A+ What is the process by which plants convert sunlight into chemical energy? Photosynthesis Which gas is most abundant in Earth's atmosphere? Nitrogen What unit is commonly used to measure electric current? Ampere What is the force that pulls objects toward the center of the Earth? Gravity What is the smallest unit of life that can carry out all life processes? Cell 2 What is the term for the natural process by which organisms better adapted to their environment tend to survive and reproduce? Natural selection What is the name for a substance that cannot be broken down into simpler substances by chemical means? Element What part of the cell is responsible for controlling the cell’s activities? Nucleus What organelle is known as the powerhouse of the cell? Mitochondria What is the term for the movement of water across a semi-permeable membrane? Osmosis What is the name of the geological process where two tectonic plates move apart? 3 Divergence What type of rock is formed from cooled magma or lava? Igneous rock What type of energy is stored in the bonds of chemical compounds? Chemical energy What is the process by which water changes from liquid to gas? Evaporation What is the term for a trait that helps an organism survive in its environment? Adaptation What do you call an animal that eats only plants? Herbivore What is the basic unit of heredity? 4 Gene What type of wave requires a medium to travel through? Mechanical wave What is the name of the force that opposes motion between two surfaces? Friction What is the scientific term for a push or pull on an object? Force What is the process of breaking down food into usable nutrients called? Digestion What is the name of the cycle in which water moves through the environment? Water cycle What term describes the resistance of an object to a change in its motion? 5 Inertia What is the largest planet in our solar system?