Question

why is the rough endoplasmic reticulum (rough er) important? a. it makes and folds proteins b. it stores extra water c. it helps the cell divide d. it protects the cell from viruses what do ribosomes do in a cell? a. make proteins b. store food c. produce energy d. control cell movement

Explanation:

• For the first question (about rough ER): The rough endoplasmic reticulum has ribosomes attached to its surface. These ribosomes are involved in protein synthesis, and the rough ER also helps in folding the newly - made proteins.
• For the second question (about ribosomes): Ribosomes are the sites of protein synthesis in the cell. They read the mRNA sequence and assemble amino acids into polypeptide chains (proteins).

Answer:

• First question: A. It makes and folds proteins
• Second question: A. Make proteins