Which of the following organelles do work directly in conjunction with each other?
A.lysosome:chloroplasts *
B.Rough endoplasmic reticulum:ribosomes
C.Nucleolus:cytoplasm
D.Centrosome:cell wall
The organelles that work directly in conjunction with each other are lysosomes and chloroplasts. To understand why, let's break down each option and analyze their functions:
A. Lysosome: Lysosomes are membrane-bound organelles that contain enzymes. They are responsible for breaking down cellular waste materials and recycling components within the cell.
B. Chloroplasts: Chloroplasts are double-membrane organelles found in plants and algae. They are the site of photosynthesis, where sunlight is converted into chemical energy (glucose) that can be used by the cell.
C. Rough endoplasmic reticulum (RER): The rough ER is an interconnected network of membranes studded with ribosomes. It plays a crucial role in the synthesis and processing of proteins, as ribosomes attached to the RER synthesize proteins that are then folded and modified within its lumen.
D. Ribosomes: Ribosomes are small, non-membrane-bound organelles that are responsible for protein synthesis. They decode genetic information from mRNA and assemble amino acids into polypeptide chains during translation.
Now, comparing these options, it becomes clear that only option A, lysosomes and chloroplasts, directly work in conjunction with each other. This is because lysosomes can be involved in the breakdown of damaged or non-functional chloroplasts.
The correct answer is B. Rough endoplasmic reticulum: ribosomes.
A. Lysosomes and chloroplasts are two different organelles that perform separate functions. Lysosomes are involved in cell waste removal, while chloroplasts are responsible for photosynthesis. These organelles do not work directly in conjunction with each other.
C. The nucleolus is a suborganelle within the nucleus and is involved in ribosome production. It does not work directly in conjunction with the cytoplasm, which is the gel-like fluid inside the cell.
D. Centrosomes are involved in cell division and the organization of microtubules. They do not work directly in conjunction with the cell wall, which is a rigid structure found in plant cells and some other organisms.
B. The rough endoplasmic reticulum (RER) is an organelle covered in ribosomes. Ribosomes are responsible for protein synthesis. The RER and ribosomes work directly together, with the ribosomes synthesizing proteins and the RER providing a membrane surface for the synthesis and later transport of these proteins. Therefore, the rough endoplasmic reticulum and ribosomes work directly in conjunction with each other.