Which of the following cell sructure contains the highest concentration of RNA?
Correct answer: C. Nucleolus
- A. Centriole
- B. Mitochondria
- C. Nucleolus
- D. Nucleus
Explanation
The correct answer is the nucleolus. It functions as the primary site for the synthesis and assembly of ribosomal RNA (rRNA), which is a crucial component of ribosomes responsible for protein synthesis. This active production results in the nucleolus having the highest concentration of RNA in the cell.Centrioles are involved in organizing microtubules and cell division, thus they do not contain RNA. Mitochondria possess their own RNA for mitochondrial protein synthesis, but the overall concentration is far less compared to the nucleolus. The nucleus houses various types of RNA, but the nucleolus within it is specifically dedicated to rRNA, leading to a higher concentration of RNA than in the rest of the nucleus.
Last updated
About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.