Chemistry of Life Review
A Grade 12 science worksheet reviewing the fundamental chemistry of living organisms, including macromolecules, enzymes, and DNA structure.
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Chemistry of Life Review
Name:
Date:
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Read each question carefully and provide your best answer. Show all work where applicable.
1. Which of the following is NOT a primary function of carbohydrates in living organisms?
Providing immediate energy
Long-term energy storage
Structural support in plants
Catalyzing biochemical reactions
2. The primary structure of a protein refers to:
The alpha-helix and beta-pleated sheet formations
The sequence of amino acids in a polypeptide chain
The overall three-dimensional shape of a single polypeptide
The arrangement of multiple polypeptide subunits
3. The building blocks of nucleic acids are , which consist of a phosphate group, a five-carbon sugar, and a nitrogenous base.
4. Enzymes function by lowering the of a reaction, thereby increasing the reaction rate.
5. The unique properties of water, such as its high specific heat and cohesive forces, are primarily due to bonds.
6. Describe the key differences in structure and function between DNA and RNA.
7. Saturated fatty acids contain one or more double bonds between carbon atoms in their hydrocarbon chain.
True
False
8. Label the following components of the DNA double helix:
A:
B:
C:
D: