Asked in NUMS 2018 2018Moderate

Ribosomes are composed of almost an equal amount of:

Correct answer: B. Protein & RNA

  • A. Protein & Lipid
  • B. Protein & RNA
  • C. RNA & Lipid
  • D. RNA & Carbohydrates

Explanation

Option A: Protein & Lipid: Ribosomes are not composed of almost equal amounts of protein and lipid. In fact, lipids are only found in small amounts in the membranes of ribosomes. The major components of ribosomes are protein and RNA. Option B: Protein & RNA: Ribosomes are composed of almost equal amounts of protein and RNA. The protein component of ribosomes is made up of about 50 different proteins, while the RNA component is made up of three different RNA molecules. The RNA molecules in ribosomes are called ribosomal RNA (rRNA). Option C: RNA & Lipid: Ribosomes are not composed of almost equal amounts of RNA and lipid. In fact, lipids are only found in small amounts in the membranes of ribosomes. The major components of ribosomes are RNA and protein. Option D: RNA & Carbohydrates: Ribosomes are not composed of almost equal amounts of RNA and carbohydrates. In fact, carbohydrates are not found in ribosomes at all. The major components of ribosomes are RNA and protein.

Last updated

About Cytoplasmic Organelles

Cytoplasmic organelles are the specialized structures suspended in cytoplasm, including mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and centrosomes. Questions compare their structures and functions in animal and plant cells, including chloroplasts and the role of the endomembrane system in transport and secretion.

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.

Related questions