Biology Chapter: Macromolecule Structures

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Questions and Answers

Which of the following structures is primarily responsible for the breakdown of macromolecules within the cell?

  • Ribosomes
  • Lysosomes (correct)
  • Endoplasmic Reticulum
  • Mitochondria

What structure is directly involved in the synthesis of proteins, which are complex macromolecules?

  • Mitochondria
  • Ribosomes (correct)
  • Endoplasmic Reticulum
  • Lysosomes

Which structure plays a role in the synthesis of lipids, a class of macromolecules?

  • Mitochondria
  • Ribosomes
  • Endoplasmic Reticulum (correct)
  • Lysosomes

Which of the following pairs of structures is directly involved in the synthesis and breakdown of macromolecules?

<p>Endoplasmic Reticulum and Lysosomes (A)</p> Signup and view all the answers

Which of the following statements is TRUE about the synthesis and hydrolysis of macromolecules?

<p>Synthesis is a process that builds up macromolecules from smaller subunits, releasing energy as a byproduct. (C)</p> Signup and view all the answers

Flashcards

Mitochondria

Organelles that generate ATP through respiration.

Lysosomes

Organelles that digest excess or worn-out organelles.

Ribosomes

Molecular machines that synthesize proteins by translating mRNA.

Endoplasmic Reticulum

Network of membranes involved in protein and lipid synthesis.

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Macromolecule Synthesis

The process of building large molecules like proteins and nucleic acids.

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Study Notes

Cellular Structures Involved in Macromolecule Processes

  • Mitochondria are not directly involved in the synthesis or hydrolysis of macromolecules. Mitochondria are responsible for energy production, not macromolecule building or breaking down.
  • Lysosomes are involved in the hydrolysis (breakdown) of macromolecules. They contain enzymes for this process.
  • Ribosomes are involved in the synthesis (building) of proteins, a type of macromolecule.
  • Endoplasmic Reticulum (ER) is involved in the synthesis and modification of many types of macromolecules, including proteins and lipids. Different parts of the ER, such as the rough ER, are involved in protein synthesis.

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