4.3.1 Metabolic Reactions

• What are anabolic reactions?

  Build up complex molecules
• Enzymes play a crucial role in metabolic reactions
• Metabolic reactions are essential for the survival of organisms.


  True
• Catabolic reactions release energy
• Photosynthesis is an example of an anabolic reaction.
• What is the energy release for catabolic reactions?

  Release energy
• What is the form of energy often required in anabolic reactions?

  ATP
• What happens to complex food molecules during digestion?

  Broken down into simpler molecules
• Catabolic reactions are destructive metabolic processes that break down complex molecules into simpler
• Match the reaction type with its definition:

  Anabolic ↔️ Build up complex molecules

  Catabolic ↔️ Break down complex molecules

  Metabolic ↔️ Chemical reactions in organisms
• Order the steps in a metabolic pathway involving catabolic reactions:

  1️⃣ Complex molecule is broken down

  2️⃣ Energy is released

  3️⃣ ATP is generated
• Catabolic reactions release energy, which can be captured in the form of ATP
• Enzymes involved in catabolic reactions accelerate the breakdown of complex molecules.


  True
• Arrange the types of metabolic pathways based on their structure:

  1️⃣ Linear

  2️⃣ Branched

  3️⃣ Cyclic
• What are metabolic reactions essential for in living organisms?

  Sustaining life
• What is the role of anabolic reactions in metabolic processes?

  Build complex molecules
• Anabolic reactions require ATP as an energy source.


  True
• Catabolic reactions release energy in the form of ATP
• How do enzymes speed up metabolic reactions?

  Lower activation energy
• Enzymes are highly specific due to the unique shape and chemical properties of their active site.


  True
• There are two main types of metabolic reactions: anabolic and catabolic
• Anabolic reactions release energy.

  False
• Factors such as temperature can affect metabolic rate
• Anabolic reactions require an input of energy
• What is the definition of catabolic reactions?

  Break down complex molecules
• What is the energy requirement for anabolic reactions?

  Require energy input
• Catabolic reactions break down complex molecules and release energy.


  True
• What process breaks down glucose in cells to release energy?

  Cellular respiration
• Digestion is an example of a catabolic reaction.
• Anabolic reactions build up complex molecules, while catabolic reactions break them down
• Protein synthesis is an example of an anabolic reaction.


  True
• Photosynthesis is an example of an anabolic reaction.


  True
• Enzymes work by lowering the activation energy required for a reaction to occur.
• Metabolic pathways are sequences of connected chemical reactions
• Match the pathway type with its example:

  Linear ↔️ Glycolysis

  Branched ↔️ Amino acid biosynthesis

  Cyclic ↔️ Citric acid cycle
• Catabolic reactions release energy
• Match the type of metabolic reaction with its definition:

  Anabolic ↔️ Build complex molecules

  Catabolic ↔️ Break down complex molecules
• Cellular respiration is an example of a catabolic reaction that releases energy.


  True
• What process do plants use to convert light energy into chemical energy stored in glucose?

  Photosynthesis
• In which metabolic process do enzymes speed up the construction of complex molecules from simpler ones?

  Anabolic reactions