Chemistry of Biology (Topic 2-2022)

Enzymes are considered to be 

• Lipids
• Carbohydrate
• Protein
• Nucleic Acid

What is the purpose  of an enzyme?

• give permission for the reaction
• raise activation energy
• speed up reactions
• control how many reactions occur

Where do substrates bind on an enzyme?

• voltage-gated channels
• surface receptor
• calcium channels
• active site

What is structure A?

• Substrate
• Active site
• Enzyme
• Products

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

What is the name for the mechanism of enzyme activity?

• Lock and key
• jigsaw puzzle
• hammer and nail
• two hands pattern

The "lock and key hypothesis" attempts to explain the mechanism of?

• Vacuole formation
• Pinocytosis
• Sharing of electrons
• Enzyme specificity 

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Tags

NGSS.HS-PS1-4

Which substrate would this enzyme catalyze?

• Δ
• σ
• ∅
• μ

When people eat foods high in proteins, such as meat, eggs and cheese, the body breaks down the proteins into smaller monomers. What is the monomer of proteins?

• amino acids

• nucleic acids

• phospholipids

• carbohydrates