100 Science Questions Exam Practice with 100% correct answers 2024

_ is the study of living things - correct answer Life science The first step to finding solutions to problems such as pollution, deforestation, and the extinction of wildlife is to - correct answer understand how we affect the world around us by making observations and asking questions. In which of the following areas of study might you find a life scientist at work? - correct answer studying how wasps could be used to control fire ant populations Many environmental problems are caused by - correct answer peoples' misuse and improper disposal of natural resources Which of the following would NOT be an area of study in life science? - correct answer studying how volcanoes are formed The set of skills or steps that scientists use to answer questions is the _ - correct answer scientific method A set of related hypotheses that are supported by evidence may become accepted as a - correct answer theory A scientist who wants to study the possible side effects of a new medicine would probably _ - correct answer include a control group that received no medicine In today's world, scientists form a global community. This means that __ - correct answer scientists share their results with other scientists Scientific knowledge changes and grows due to __ - correct answer all of the answers When researchers use the scientific method, they should - correct answer repeat or switch the order of steps as needed The steps of the scientific method __ - correct answer are not always used in order In a scientific experiment, a hypothesis that cannot be tested is always considered to be __ - correct answer not useful Scientists often use experiments to test their __, which are possible explanations for observations. - correct answer hypotheses In a controlled experiment, ___. - correct answer a control group is compared with one or more experimental groups An advantage of using the International System of Units is that it - correct answer gives scientists a common way to share their results The International System of Units - correct answer contains units that are based on the number 10 Transmission electron microscopes can magnify specimens up to ___ their actual size. - correct answer 200,000 Which tool would a life scientist use to obtain a detailed image of the nerves that branch off a person's spinal cord? - correct answer MRI A life scientist would use a(an) ___ to magnify a living specimen. - correct answer a compound light microscope ___ is the use of knowledge, tools, and materials to solve problems and accomplish tasks. - correct answer technology A ___ object contains the same amount of matter as a 10 kg object. - correct answer 10,000 g The three main parts of a compound light microscope are ___. - correct answer a stage, a light, and a tube with lenses. ___ is defined as the amount of space something occupies. - correct answer Volume X rays are used ___. - correct answer all of the answers X rays are used to ___ - correct answer all of the answers A set of related hypotheses that are supported by evidence may become accepted as a ___. - correct answer theory The International System of Units ___. - correct answer contains units that are based on the number 10. Scientific knowledge changes and grows due to ___. - correct answer all of the answers Many environmental problems are caused by - correct answer people's misuse and improper disposal of natural resources In which of the following areas of study might you find a life scientist at work? - correct answer studying how wasps could be used to control fire ant populations When researchers use the scientific method, they should - correct answer repeat of switch the order of the steps as needed ___ is the study of living things. - correct answer Life Science In a scientific experiment, a hypothesis that cannot be tested is always considered to be - correct answer not useful Transmission electron microscopes can magnify specimens up to ___ times their actual size. - correct answer 200,000 ___ is defined as the amount of space something occupies. - correct answer Volume The three main parts of a compound light microscope are ___. - correct answer a stage, a light, and a tube with lenses The first step in finding solutions to problems such as pollution, deforestation, and the extinction of wildlife is to - correct answer understand how we affect the world around us by making observations and asking questions In a controlled experiment ___. - correct answer a control group is compared with one or more experimental groups An advantage of using the International System of Units is that it - correct answer gives scientists a common way to share their results A ___ object contains the same amount of matter as a 10 kg object. - correct answer 10,000 kg The steps of the scientific method ___. - correct answer are not always used in order Which tool would a life scientist use to obtain a detailed image of the nerves that branch off a person's spinal cord? - correct answer MRI In today's world, scientists form a global community. This means that ___. - correct answer scientists share their results with other scientists Which of the following would NOT be an area of study in life science? - correct answer studying how volcanoes are formed A scientist who wants to study the possible side effects of a new medicine would probably - correct answer include a control group that received no medicine Scientists often use experiments to test their ___, which are possible explanations for observations. - correct answer hypotheses A life scientist would use a(an) ___ to magnify a living specimen. - correct answer compound light microscope ___ is the use of knowledge, tools, and materials to solve problems and accomplish tasks. - correct answer Technology The set of skills or steps that scientists use to answer questions is the ___. - correct answer scientific method When a Venus flytrap catches an insect, it is reacting to the stimulus of ___. - correct answer touch DNA is an acronym for ___. - correct answer homeostasis DNA provides instructions for making ___. - correct answer heredity The process of maintaining a stable internal environment is known as ___. - correct answer homeostasis The resemblance of offspring to their parents is a result of ___. - correct answer heredity ___ refers to all of the chemical activities that an organism's cells perform. - correct answer metabolism When a planarian worm is cut in half, each half develops into a whole worm. This is an example of ___ reproduction. - correct answer asexual When a duck dives under water, its inner eyelids automatically raise to cover the duck's eye. In this case, water acts as - correct answer a stimulus ___ is the passing of traits from one generation to the next. - correct answer Heredity A change in an organism's environment that affects the organism's activities is a ___. - correct answer stimulus Most plants are ___. - correct answer producers A human can survive without water for only ___. - correct answer three days Organisms must have food because ___. - correct answer food is a source of energy. Cells do not use ___ for energy storage. - correct answer Nucleic acids In the cell membrane, ___ molecules form to layers. - correct answer phospholipid Which of the following is NOT true of proteins? - correct answer They are the priamary source of energy for cells ___ are sometimes called the blueprints of life. - correct answer Nucleic acids ___ is a complex carbohydrate manufactured by plants. - correct answer Starch The molecule that provides energy for cellular processes is - correct answer ATP The subunits of proteins are ___. - correct answer amino acids The resemblance of offspring to their parents is a result of ___. - correct answer heredity DNA is an acronym for - correct answer deoxyribonucleus acid When a Venus flytrap catches an insect, it is reacting to the stimulus of ___. - correct answer touch DNA provides instructions for making ___. - correct answer proteins The process of maintaininig a stable environment is known as ___. - correct answer homeostasis ___ refers to all of the chemical activities that an organism's cells perform. - correct answer Metabolism When a duck dives under water, its inner eyelids automatically raise to cover the duck's eye. In this case, water acts as - correct answer a stimulus In the cell membrane, ___ molecules form two layers. - correct answer phosopholipid Cells do not use ___ for energy storage. - correct answer nucleic acids The molecule that provides energy for cellular processes is - correct answer ATP A change in an organism's environment that affects the organism's activities is a - correct answer stimulus When a planarian worm is cut in half, each half develops into a whole worm. This is an example of ___ reproduction. - correct answer asexual Which of the following is NOT true of Proteins? - correct answer they are the primary source of energy for cells Most plants are ___. - correct answer producers Organisms must have food because - correct answer food is a source of energy A human can survive without water for only - correct answer three days The subunits of proteins are - correct answer amino acids ___ is a complex carbohydrate manufactured by plants - correct answer starch ___ are sometimes called the blueprints of life. - correct answer Nucleic acids ___ is the passing of traits from one generation to the next. - correct answer Heredity ___ are the basic units of living things. - correct answer Cells ___ are made up of various tissues that work together to perform a specific job. - correct answer Organs A life scientist who observes the relationships between plants, animals, weather, and soil on a mountaintop is studying a(an) - correct answer ecosystem Different ___ work together in an organ - correct answer tissues A group of organisms that are of the same kind and that live in the same area make up a ___. - correct answer population Two or more different populations living in the same area make up a ___. - correct answer community A community of organisms and their nonliving environment make up an ___. - correct answer ecosystem Ecosystems on land are called ___ ecosystems. - correct answer terrestrial A ___ organism can exist only as a group of cells. - correct answer multicellular Which of the following is an example of a tissue in your body? - correct answer all of the answers