What structure in the nucleus makes ribosomes?
What structure in the nucleus makes ribosomes?
The nucleolus is a region found within the cell nucleus that is concerned with producing and assembling the cell’s ribosomes. Following assembly, ribosomes are transported to the cell cytoplasm where they serve as the sites for protein synthesis.
What structures contain ribosomes?
Ribosomes are found ‘free’ in the cytoplasm or bound to the endoplasmic reticulum (ER) to form rough ER. In a mammalian cell there can be as many as 10 million ribosomes. Several ribosomes can be attached to the same mRNA strand, this structure is called a polysome. Ribosomes have only a temporary existence.
Which structure surrounds the nucleus and is covered in ribosomes?
Nuclear Membrane
What does the nucleus contain?
A nucleus is a membrane-bound organelle that contains the cell’s chromosomes.
Why does bacteria have no nucleus?
What does that mean for bacteria, which do not have a nucleus? The DNA in a bacteria is not protected inside the nucleus; instead, it floats around freely inside the cell in a loosely coiled circular shape in the nucleoid. The nucleoid is an odd-shaped region with no membrane to surround the DNA, unlike a nucleus.
Does a bacteria cell have a nucleus?
Bacteria, of course, have no nucleus and therefore also nuclear membrane. genetic information- DNA is organized into numerous chromosomes and is packaged in the nucleus.
Does bacterium have a nucleus?
Bacteria are all single-celled. The cells are all prokaryotic . This means they do not have a nucleus or any other structures which are surrounded by membranes . Larger bacterial cells may be visible using a light microscope, however an electron microscope would be needed to see the details of the cell organelles.
Does prokaryotic means before nucleus?
Interestingly, “prokaryote” means “before the nucleus,” and refers to a cell structure where the chromosomal DNA is not enveloped in any internal membrane but is free in the cell cytoplasm.
What does the Karyote mean in Greek?
The genetic material is protected inside the nucleus. Actually, karyote is from the Greek karutos, meaning having nuts. And Eu means good, well or true.