Download Biomolecules: Review Sheet (Chapter 2.1-2.3)

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Biomolecules: Review Sheet (Chapter 2.1-2.3)
Complete the following review to the best of your ability. THIS IS
FOR YOU! SO DO A GOOD JOB AND ASK QUESTIONS IF YOU NEED
TO!
1. Use a Periodic Table to complete the chart below:
Chemical
Symbol
Mass
Number
Protons
Carbon
Nitrogen
Oxygen
Phosphorus
Hydrogen
Potassium
Calcium
Iron
14
14
16
35
2
39
40
56
Neutrons
Electrons
Valence
Electrons
BIOMOLECULES REVIEW
Section II: Bonding :Atoms Unite!
1. Compare and contrast Covalent and Ionic Bonds.
2. What is electronegativity?
3. Compare and contrast polar covalent and nonpolar covalent bonds.
4. What are hydrogen bonds?
Section III: Solutions
1. What is the relationship between solutions, solutes, and solvents?
2. Which salt solution is more concentrated, solution A, which contains 18g of
salt in 6L of water, or solution B, which contains 24g of salt in 12L of water?
3. How are acids and bases different? How do their pH values differ?
SECTION IV-WATER
1. Why is water such an important molecule to living things? (List at least 3
properties and explain why)
BIOMOLECULES REVIEW
2. Describe the chemical make up and type of bonding found in water
molecules.
3. What is the effect of this uneven sharing of electrons in water?
4. Sketch a molecule of water showing the charges on the molecule.
5. Name 2 types of compounds that dissolve well in water.
6. What happens when an ionic compound such as sodium chloride (table salt)
dissolves in water?
7. Water molecules attracting other water molecules is called
_________________.
BIOMOLECULES REVIEW
8. Cohesion of water molecules produces ________________ tension making
water seem like it has a "skin" on it. Surface tension enables some
_____________ to walk across the surface of the water.
9. Water molecules attracting other types of molecules is called
_________________.
10.
Adhesion and cohesion together enable water molecules to move
____________ through narrow tubes against the force of gravity.
11. The above property of water is called _________________.
12. Give an example of an organism using capillarity.
SECTION V-Biomolecules
13. Complete the following table:
Biomolecule
General
Structure
(Elements)
Monomeric
Unit
Polymer
Function(s)
Carbohydrates
Lipids
Nucleic Acids
Proteins
14.What properties of carbon make it such an important element in living
things?
BIOMOLECULES REVIEW
15. Describe the relationship between functional groups, monomers and
polymers.
16.Dehydration synthesis creates polymers. Explain the process.
17. Hydrolysis breaks down polymers. Explain the process.
18.
Lipids and some proteins are hydrophobic. What does this mean?
19.What is the difference between an unsaturated and saturated fat?
20.
What is the difference between and trans and cis bond?
21. Many of the fats in your body are in the form of triglycerides. Describe a
triglyceride molecule.
BIOMOLECULES REVIEW
22.
A nucleotide consists of what three parts?
23.
What is the function of nucleic acids in living things?
24.
What are two kinds of nucleic acids?
25.
What are some diffrerent examples of carbohydrate in living things and
explain their function?
26.
What are some monemers of carbohydrate?
27.
List at least 4 important functions for protein.
28.
What are the four different levels of protein organization? Draw
pictures to show the differences
BIOMOLECULES REVIEW
29.
What are parts of amino acid?
BIOMOLECULES REVIEW