What are ribosomes ?

Answer 1

Ribosomes are cytoplasmic granules composed of RNA and protein, at which protein synthesis takes place. They were first observed by Palade in the electron microscope as dense particles or granules. Upon isolation, they were shown to contain approximately equal amounts of RNA and protein Label. To function actively in protein synthesis, they must be bound into complete ribosomes.

Answer 2

A MINUTE SPHERICAL PARTCLE COMPOSED OF RIBO NUCLEIC ACID AND PROTEINS AND PRESENT IN GREAT NUMBERS IN THE CYTOPLASM OF CELLS.PROTEINS ARE MANUFACTURED AT THE RIBOSOMAL SURFACE FOLLOWING GENETIC INSTRUCTIONS CARRIED THERE BY MESSENGER RIBO NUCLEIC ACID

Answer 3

What Are Ribosomes

Answer 4

A ribosome is an organelle in cells that assembles proteins. Ribosomes are composed of ribosomal RNA and ribosomal proteins (known as a Ribonucleoprotein or RNP). It translates messenger RNA (mRNA) into a polypeptide chain (e.g., a protein). It can be thought of as a factory that builds a protein from a set of genetic instructions. Ribosomes can float freely in the cytoplasm (the internal fluid of the cell) or bind to the endoplasmic reticulum, or to the nuclear envelope. Since ribosomes are ribozymes, it is thought that they might be remnants of the RNA world.

Answer 5

A ribosome is an organelle in cells that assembles proteins. Ribosomes are composed of ribosomal RNA and ribosomal proteins (known as a Ribonucleoprotein or RNP). It translates messenger RNA (mRNA) into a polypeptide chain (e.g., a protein). It can be thought of as a factory that builds a protein from a set of genetic instructions. Ribosomes can float freely in the cytoplasm (the internal fluid of the cell) or bind to the endoplasmic reticulum, or to the nuclear envelope. Since ribosomes are ribozymes, it is thought that they might be remnants of the RNA world.

Ribosomes were first observed in the mid-1950s by cell biologist George Palade in the electron microscope as dense particles or granules[1] for which he would win the Nobel Prize. The term ribosome was proposed by scientist Richard B. Roberts in 1958:

Answer 6

ribosomes are one of the cell organelles found suspended in the cytoplasm.they help in protein synthesis and hence they are also known as 'protein factories' of the cell.they are composed of proteins and rRNA i.e ribosomal RNA.
ribosomes are fairly spherical in structure.they are actually made of two subunits, alarger and a smaller subunit.eukaryotic ribosomes are of 80S type and are made of 60Sand 40s subunits.here S stands for Svedberg unit and measues the sedimentation co-efficient.on the other hand prokaryotic ribosomes are 70S type made of 50S and 30S subunits .
sometimes the ribosomes form aggregations known as polyribosomes..typically seen in bacteria.

Answer 7

They provide/manufacture the protein in a cell. My anatomy teacher was pretty silly and she taught us the easiest way not to forget ribosomes was to remember people eat ribs, ribs have meat and meat is full of protein so, RIBosomes = protein

Answer 8

Ribosomes are the platform upon which protein bio synthesis takes place.In other words, they are the workbench of protein synthesis. Each ribosome consists of two subparticles; smaller subparticle is constituted by nearly two dozen proteins and a ribosomal RNA, say of 28s.The large subparticle is constituted by about thirty proteins and two ribosomal RNA, one 32s and other 5.8s. The smaller subparticle holds messenger RNA and larger subparticle has two sockets for fitting of two transfer RNA.This subparticle also contains the enzyme required to form the peptide bond, called peptidyl transferase.
The ribosomes of bacteria and mitochondria, and chloroplasts are smaller. Ribosomes may be free or membrane bound. They are submircoscopic particles, slightly oblate.

Answer 9

ribosomes are present in both plant and animal cells they are the site of protein synthesis

Answer 10

Ribosomes are the protein-synthesizing machines of the cell.

They translate the information encoded in messenger RNA (mRNA) into a polypeptid