Chem, Ecology, and Genetic Crosses Exam Review

What happens when an enzyme catalyzes a reaction?

• It lowers the activation energy of the reaction.
• It raises the activation energy of the reaction.
• 
  It becomes a product.
• 
  It acts as a reactant.

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Two proteins in the same cell perform different functions. This is because they have different sequences of  

• fatty acids. 
• nucleotides.
• amino acids.
• carbohydrates.

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Carbohydrates

• Important for muscle contraction
• Provide usable chemical energy for cells
• Provide long-term energy storage
• Store and transmit genetic information

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Proteins 

• Important for muscle contraction
• Provide usable chemical energy for cells
• Provide long-term energy storage
• Store and transmit genetic information

Lipids 

• Provide long-term energy storage
• Store and transmit genetic information
• Important for muscle contraction
• Provide usable chemical energy for cells

Nucleic Acids

• Provide long-term energy storage
• Important for muscle contraction
• Store and transmit genetic information
• Provide usable chemical energy for cells

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Amino acids are monomers for proteins. Which of the following is a monomer for starch? 

• glycerol
• fatty acid 
• amino acid
• simple sugar

What type of biological molecule does the body use for long-term energy storage? 

• carbohydrate
• amino acid 
• lipid
• DNA

What are the building blocks of proteins? 

• sugars 
• amino acids
• glycerol
• glucose

An organism's genetic information is stored in polymers of which type of macromolecule? 

• carbohydrate
• nucleic acid
• lipid
• protein