Home ยป Which of the following cell organelle remains enveloped by a single unit membrane? Plant kingdom MCQs Which of the following cell organelle remains enveloped by a single unit membrane? January 31, 2022 2 Views Q. Which of the following cell organelle remains enveloped by a single unit membrane? A. Lysosomes B. Chloroplast C. Mitochondria D. Nucleus Answer: Lysosomes