Which structure is unique to eukaryotic cells? a)dna b)cell membrane c)ribosomes d)nucleus

The structure which is unique to a eukaryotic cell is D) nucleus.

Further Explanation:

Eukaryotic cells are the cells which have membrane-bound organelles, membrane-bound nucleus, and several chromosomes. They have a true nucleus and have some similarity with prokaryotic cells like plasma membrane, cytoplasm, and ribosomes.

In eukaryotes, the nucleus is membrane-bound organelle which contains all the hereditary information. The nucleus is also known as command center because it contains chromosomes which have all the genetic information in the form of DNA and RNA required for the reproduction of life. It has nuclear envelope which separates the nucleus content from cytoplasm and this nuclear envelope is connected to the endoplasmic reticulum. The nucleolus which is present in the nucleus contains ribonucleic acid and proteins.

In eukaryotes, the nucleus regulates the protein synthesis with the help of messenger RNA. In the cytoplasm, ribosomes and transfer RNA together helps to produce protein. The central dogma is the principle by which protein is made. According to this principle deoxyribonucleic acid is converted into messenger ribonucleic acid by a process known as transcription. This messenger RNA is converted into protein by a process known as translation with the help of transfer RNA.

Learn more:

1. Learn more about which structure is unique to eukaryotic cells

2. Learn more about the purpose of transfer RNA

3. Learn more about translation

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cell biology

Keywords:

Eukaryotic cell, DNA, cell membrane, ribosomes, nucleus, plasma membrane, cytoplasm, chromosomes, endoplasmic reticulum, nucleolus, proteins, messenger RNA, transcription, translation, transfer RNA.

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