Nature of Science
The step by step procedure that scientist use to answer a question.
What is the scientific method?
What is a hypothesis?
Testable educated guess.
Macromolecule used as the first source of energy.
Carbohydrates
What is Matter?
Anything that has mass and takes up space
Which macromolecule is not received from our food?
Nucleic Acid
Contrast precision and accuracy.
Precision- repeatable data
Accurate- how close data is to the acceptable values.
Give an example of a hypothesis.
If...then...because...
Give two cellular functions of proteins.
Enzymes, hormones, structure, support etc...
What is a polar and nonpolar molecule?
Polar- uneven charge, Water
Nonpolar- even distribution of charge- Lipids, CO2
Explain the difference between hydrophobic and hydrophilic.
Hydrophobic- water fearing
Hydrophilic- water loving
Identify the two types of observations. Give example of each.
Quantitative and Qualitative
Explain why constants are important. Provide an example.
Factors in an experiment that should stay the same for accurate and precise data. Examples vary.
Define monomer and polymer.
Monomer- single unit
Polymer- many subunits combined
What water property results in the formation of a meniscus in a graduated cylinder?
Adhesion
List the order in which macromolecule would be consumed for energy.
Carbs -> Lipids -> Protein
What are the steps for technological design?
Identify Problem
Solution Design
Implementation
Evaluation
Give an example of an experiment and identify the IV and the DV.
Answers vary- see judge.
What type of macromolecule is found in the cell membrane? Explain their structure
Phospholipids
What does it mean to have a high specific heat for water? Why is this important for organisms?
Water needs a lot of energy to change its temperature. Allows for global temperatures to be steady and aquatic organisms to survive.
Compare the energy storage of each macromolecule.
Carbs- 4 cal/g
Lipids- 9 cal/g
Protein- 4 cal/g
Nucleic acid- 0 cal/g
What is a theory and a law. Provide an example of each
Theory- Explains why things happen. Big bang theory
Law- Explain how things happen. Gravity
List all the steps of the scientific method.
Ask a questions
Background research
Hypothesize
Perform the experiment
Analyze the data
Conclusions
List the 4 macromolecules and their monomer and polymer.
Carbs- monosaccharides, polysaccharides
Lipids- fatty acid, triglyceride
Proteins- amino acid, polypeptide
Nucleic Acids- nucleotide, DNA/RNA
List and explain all the properties of water.
Cohesion
Adhesion
High specific heat
Less dense as a solid
Terrific solvent
List the levels of organisms starting with an atom to organism.
Atom, molecule, organelles, cell, tissue, organ system, organism