Final answer:
Ribosomes synthesize proteins and can be attached to the endoplasmic reticulum. Lysosomes are involved in digestion within the cell and mitochondria are responsible for energy production through aerobic respiration. The endoplasmic reticulum helps in synthesis and detoxification.
Step-by-step explanation:
Matching the definitions to the correct organelles:
- Ribosome is the site of polypeptide assembly.
- The two-part organelle found in the endoplasmic reticulum is also the Ribosome.
- Lysosome is where the cellular digestion and disposal of biological molecules occurs.
- The organelle that plays a role in cell defense could refer to several organelles like lysosomes or peroxisomes but is not specified among the options given. However, the Endoplasmic reticulum can be associated with cell defense mechanisms, particularly the smooth ER, which participates in the detoxification of compounds.
- Mitochondrion is where aerobic respiration occurs.
Ribosomes are essential for protein synthesis in all cells. They are found both free in the cytoplasm or bound to the endoplasmic reticulum, making it rough ER. The endoplasmic reticulum, consisting of a rough (RER) and smooth (SER) part, functions in synthesizing and transporting biomolecules. The RER is notably responsible for the synthesis of proteins, while the SER is involved in lipid synthesis and detoxification processes. Lysosomes contain digestive enzymes that break down cellular waste. Mitochondria, referred to as the powerhouses of the cell, generate ATP through cellular respiration. Together, these organelles demonstrate the interconnected nature of cellular processes.