1. which of the following statements regarding science and technology is true? * a) scientific experiments are always aimed at meeting a human need. b) scientific inquiry is concerned with cost-effectiveness. c) science aims to answer questions whereas technology aims to solve problems. c) technology explains and predicts the physical, living and designed world. 2. kolby wants to grow the tallest sunflowers. she would like to compare two plant foods on her sunflowers to see if either one will make her sunflowers grow taller. kolby designs an experiment. she has three of the same type of sunflower plant. they all get the same amount of sun and water, and they are kept at the same temperature in the same type of soil. kolby adds plant food a to plant a, plant food b to plant b, and no plant food to plant c. she measures the growth of the plants every week. * height measurements taken weekly during her experiment would be an example of a) inferences. b) qualitative data. c) quantitative data. d) background information. 3. are a special class of proteins that speed up chemical reactions inside living things. a) polypeptides b) amino acids c) polysaccharides d) enzymes 4. which of the following is not one of the statements of the cell theory? a) all living things are made of cells. b) cells are the building blocks of life. c) all cells have a nucleus. d) all cells come from existing cells 5. which group of organisms does not have eukaryotic cells? * a) protists b) animals c) bacteria d) fungi 6. the main difference between active and passive transport is a) active transport requires atp to move substances across the nuclear membrane. b) passive transport requires atp to move substances across the nuclear membrane. c) active transport requires atp to move substances across the cell membrane. d) passive transport requires atp to move substances across the cell membrane. 7. the power of atp is released when * a) it is oxidized. b) an oxygen group is lost. c) a phosphate group is added. d) a phosphate group is lost. 8. to maintain equilibrium, cells must be in a(n) solution. * a) hypertonic c) hypotonic c) isotonic d) pure water