Contents
What is the ribosomes function in a cell?
A ribosome is a cellular particle made of RNA and protein that serves as the site for protein synthesis in the cell. The ribosome reads the sequence of the messenger RNA (mRNA) and, using the genetic code, translates the sequence of RNA bases into a sequence of amino acids.
What are synthesized in the ribosomes of the cell?
Ribosomes are the sites in a cell in which protein synthesis takes place. Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.
What is the structure of ribosomes in a cell?
Ribosomes consist of two major components: the small and large ribosomal subunits. Each subunit consists of one or more ribosomal RNA (rRNA) molecules and many ribosomal proteins (RPs or r-proteins). The ribosomes and associated molecules are also known as the translational apparatus.
What is the main function of the ribosomes in the cell quizlet?
Function – Ribosomes are responsible for making protein through amino acids. The proteins created are essential to cell and organismal function. Some ribosomes are attached to the endoplasmic reticulum (rough ER), others float freely within the cytoplasm.
Where are ribosomes synthesized?
Nucleolus
Nucleolus is the site of ribosome synthesis. Note:Nucleolus is a special dense region in the eukaryotic cell. It is composed of RNA and protein. It plays a vital role in sensing cellular stress and assembling of ribosomes.
Do ribosomes have a membrane?
Ribosomes can be bound by a membrane(s) but they are not membranous. A ribosome is basically a very complicated but elegant micro-‘machine’ for producing proteins. Each complete ribosome is constructed from two sub-units.
What is ribosome structure and function?
A ribosome is a complex molecular machine found inside the living cells that produce proteins from amino acids during the process called protein synthesis or translation. The process of protein synthesis is a primary function, which is performed by all living cells.
How do you describe a micrograph?
A micrograph or photomicrograph is a photograph or digital image taken through a microscope or similar device to show a magnified image of an object. This is opposed to a macrograph or photomacrograph, an image which is also taken on a microscope but is only slightly magnified, usually less than 10 times.
What is a cell micrograph?
A micrograph is a photo or digital image taken through a microscope to show a magnified image of a specimen. While organelles have identifying structures, specific shapes may vary depending on the location of cross-sections. Prokaryotic Cell Features. Feature: none nucleoid cell wall pili flagella all.
Which is the electron micrograph of the nucleus?
The Electron Micrograph of Nucleus. 1. The Electron Micrograph of Mitochondria: It is an electron micrograph of cell’s largest and most important organelle – the mitochondria and is characterized by the following features (Fig. 7 & 8):
Which is the electron micrograph of the lysosome?
The Electron Micrograph of Lysosomes: This is the electron micrograph of Lysosome, and is characterized by following features. These are also called Suicide bags or Death bags of the cell (Fig. 13 &14): (1) They were discovered by de Duve (1954). (2) They are spherical or irregular membrane bound vesicles filled with digestive enzymes.
Which is an electron micrograph of a green plant?
This is an electron-micrograph of plastid or chloroplast, which is an integral component of all green plant leaves and is characterized by following features (Fig. 15 & 16): (1) They may be spheroidal, ovoid, stellate or collar shaped and differ in size and number in different cells.
Which is the electron micrograph of the Golgi complex?
2. The Electron Micrograph of Golgi Complex: It is the electron micrograph of Golgi complex along with its line drawing and is characterized by the following features (Fig.9 & 10): (1) It was discovered by Camillio Golgi (1898) and was named after his name.