Unit 3 Study Guide
Name: ___________________________ Period: ______
1. Complete the chart below. List all examples from your notes.
Macromolecule
Monomers
Polymers
Carbohydrates
Proteins
Lipids
Nucleic acids
2. What is the difference between an ionic bond and a covalent bond? ____________________________________
__________________________________________________________________________________________________
3. What type of bond is likely to form between metals and nonmetals? ________________________________
4. Draw and label a phospholipid. Identify which end is hydrophilic and which is hydrophobic.
5. Complete the following table. Identify the biological molecule structure illustrated below.
Structure
Type of Biological
Molecule
Is this a monomer or
polymer?
6. Label the diagram to show the solution, solute, and solvent. Which substance does the dissolving in a solution?
7. Complete the chart below.
Element
# Particles (Proton, Neutrons,
Electrons)
Protons = 6
Neutrons = 6
Carbon
Electrons = 6
Atomic Model Diagram
Protons =
Hydrogen
Neutrons =
Electrons =
Protons =
Oxygen
Neutrons =
Electrons =
8. Complete the chart below using information from the ‘Testing an Unknown Substance’ Lab.
Biological Molecule
Disaccharides
Polysaccharides
Protein
Lipids
Test
Positive Color Indicator
Biuret’s Test
Translucent
9. What substance did we use as a ‘negative control’ in the Biomolecule Lab (‘Testing an Unknown
Substance’) __________________________
10. Why do molecules form hydrogen bonds?
____________________________________________________________________________________
11. What are the three properties of water that are related to hydrogen bonds?
a. __________________________
b. __________________________
c. __________________________
12. Which property of water is responsible for surface tension? ___________________________
13. Which property of water is responsible for allowing plants to transport water from their roots to their
leaves? _____________________________________
14. Which property of water helps living things regulate their temperature? ______________________
15. Why do fats and oils rarely dissolve in water? __________________________________________
16. Label the pH scale below as either acidic, basic, or neutral.
17. What is the lock-and-key model?
____________________________________________________________________________________
____________________________________________________________________________________
18. What is the difference between dehydration synthesis and hydrolysis?
____________________________________________________________________________________
____________________________________________________________________________________
19. What is denaturation?
____________________________________________________________________________________________
____________________________________________________________________________
20. Complete the following chart by drawing a graph to illustrate the effect of each condition on enzyme activity.
Condition
Temperature
pH
Substrate
concentration
Graph