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Does endoplasmic reticulum have DNA and ribosomes?

Does endoplasmic reticulum have DNA and ribosomes?

The nucleus houses the cell’s DNA and directs the synthesis of proteins and ribosomes. Mitochondria are responsible for ATP production; the endoplasmic reticulum modifies proteins and synthesizes lipids; and the golgi apparatus is where the sorting of lipids and proteins takes place.

Which organelle has its own DNA?

Chloroplasts and mitochondria are subcellular bioenergetic organelles with their own genomes and genetic systems. DNA replication and transmission to daughter organelles produces cytoplasmic inheritance of characters associated with primary events in photosynthesis and respiration.

Which cell organelle does not contain DNA?

Ribosomes do not contain any DNA. Hence, option C- Ribosome is the correct answer. Note: Mitochondria are twofold membranous organelles that are round and hollow or hotdog shaped and found in all eukaryotic cells.

Do ribosomes contain DNA?

Ribosomes do not contain DNA. Ribosomes are composed of 2 main sub-units – the large subunit joins together the mRNA and the tRNA forming polypeptide chains whereas the smaller RNA subunits reads RNA. Hence, ribosomes contain ribosomal proteins and rRNA. Hence, ribosomes do not have DNA.

Where is DNA not found?

Ribosomes are the organelles which are responsible for protein synthesis. They are devoid of DNA. They receive the m-RNA strands for translation into proteins.

How is RNA different from DNA?

Like DNA, RNA is made up of nucleotides. There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.

Where does the endoplasmic reticulum not contain DNA?

Endoplasmic reticulum does not contain DNA. DNA is primarily present in the nucleus and also present in the mitochondria and chloroplasts.

Is the endoplasmic reticulum smooth or rough?

Narration. The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.

What kind of lipids does the endoplasmic reticulum produce?

The endoplasmic reticulum produces both lipids and proteins for the membrane of the cell. These lipids and proteins are also used to compose other parts of the cell such as vacuoles, the cell membrane, the Golgi apparatus, lysosomes, and secretory vesicles. There are two different portions of the ER – the rough ER and the smooth ER.

Where does protein synthesis occur in the endoplasmic reticulum?

It is a series of connected flattened sacs that have many ribosomes on their outer surface, hence the name. It synthesises and secretes proteins in the liver, hormones and other substances in the glands. Rough ER is prominent in cells where protein synthesis happens (such as hepatocytes)