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Transcript
Test Review: Unit 1 Scientific method, measurements, life, and biomolecules 1) What is a hypothesis? How can you find out if it is correct? 2) When setting up an experiment, what are the independent variable, dependent variable, and control of the experiment? 3) In the metric system, what are the units of measurement for length (list in order of smallest to largest..hint: there are 8). 4) What a. b. c. d. unit of measurement would you use to measure the length of a: Cell = Lab table = Pencil = Seed/bean = 5) What is the volume (in mL) of liquid in this cylinder? 6) Using the metric ruler, how long is the threaded part of the bolt? a. mm b. cm c. m d. km 7) How do you determine if something is a living thing or a nonliving thing? 8) What is metabolism (metabolic activity)? 9) What is homeostasis? Explain how the human body maintains homeostasis (one example). 10) What is asexual reproduction? What kind of offspring does it produce (compared to the parent)? 11) What is sexual reproduction? What kind of offspring does it produce (compared to the parents)? 12) What is the cell theory? 13) What is similar to a cell but is not considered a living thing because it can’t reproduce without a host? 14) What are the levels of organization in a living thing? (list smallest to largest? 15) What is a tissue? 16) What two inorganic compounds do plants use to make glucose, an organic molecule? 17) What is a macromolecule? 18) Fill in the chart for each macromolecule: Protein Lipid Carbohydrate Monomer Main function Examples Nucleic acid 19) Draw the basic shape of a molecule for a carbohydrate, a protein, a lipid, and a nucleic acid 20) What determines the shape of a protein? 21) Give an example of a polysaccharide 22) What type of biomolecule is an enzyme? 23) Label the following diagram: 24) Why does the body need enzymes? 25) How are enzymes named? Give an example. 26) Draw a graph that shows how temperature and an enzyme’s rate of reaction are related? 27) Which pH is neutral? Which pH is considered an acid? Which pH is considered a base? 28) At what pH do all enzymes work best?