Enzymes in Living Things

Based on their role in the cell, enzymes can also be classified as –

• inhibitors
• organic (biological) catalysts
•  hormones
• vitamins & minerals

What is the primary role of enzymes inside of living cells? 

• organizing the translation of proteins
• allowing cells to be motile
• absorbing ultraviolet rays
• speeding up chemical reactions 

Enzymes are a form of which biomolecule? 

• carbohydrates
• proteins
• nucleic acids
• lipids

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Some bacteria contain a substance called nitrogenase.  Nitrogenase catalyzes the chemical reaction that converts atmospheric nitrogen (N₂) into ammonia (NH₃).  Nitrogenase is an example of which of the following?
 

•  a sugar
• a nucleotide
•  an enzyme
• an amino acid

Enzymes are composed of which of the following building blocks? 

• amino acids
• acyl groups
• nucleotides
• monosaccharides

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Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?
 

• Enzymes are specific to a substrate.
• Enzymes can operate in a wide range of conditions.
• Enzymes are activated by neighboring molecules.
•  Enzymes can be found in all life-forms. 

• Structure B is a substrate
• Structure C is a substrate 
• Structures at E are substrates 
• Structure B is an enzyme

• Structure B is an enzyme
• Structure C is an enzyme
• Structures at E are substrates 
• Structure C is a product

• location A is a product

• Location A is the active site

• Location A can bind with any substrate, no matter the shape or size

• Structure B is the product
• Structure C is a product
• Structure D is the product 
• Structure E is a product

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