What is ribosome ?

What is ribosome ?
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Answer :

: Numerous tiny particles located outside the cytoplasm and endoplasmic reticulum of every living cell that play an active role in protein synthesis are called ribosomes.
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Related questions

What is the function of the ribosome?

Description : What is the function of the ribosome?

Last Answer : A: The ribosome is a cellular organelle responsible for the synthesis of proteins from amino acids, using messenger RNA (mRNA) as a template.

What is the function of the ribosome?

Description : What is the function of the ribosome?

Last Answer : A: The ribosome is a cellular organelle that is responsible for synthesizing proteins by linking together amino acids in the order specified by the mRNA.

What is the function of the ribosome?

Description : What is the function of the ribosome?

Last Answer : A: The ribosome is a cellular structure that is responsible for synthesizing proteins by linking amino acids together in the order specified by the sequence of codons in messenger RNA molecules.

What is the function of the ribosome?

Description : What is the function of the ribosome?

Last Answer : A: The ribosome is responsible for synthesizing proteins by translating mRNA sequences into amino acid sequences.

What is the function of the ribosome?

Description : What is the function of the ribosome?

Last Answer : A: The ribosome is responsible for synthesizing proteins.

What are the essential roles of ribosome during translation? -Biology

Description : What are the essential roles of ribosome during translation? -Biology

Last Answer : answer:

What happens when the ribosome reaches a stop codon? -Biology

Description : What happens when the ribosome reaches a stop codon? -Biology

Last Answer : answer:

What happens when the ribosome reaches a stop codon? -Biology

Description : What happens when the ribosome reaches a stop codon? -Biology

Last Answer : answer:

In absence of ribosome in cell which function does not takes place? -General Knowledge

Description : In absence of ribosome in cell which function does not takes place? -General Knowledge

Last Answer : The answer is 'Protein synthesis'

In a living cell what is the site of ribosome formation? -Do You Know?

Description : In a living cell what is the site of ribosome formation? -Do You Know?

Last Answer : answer:

In absence of ribosome in cell which function does not takes place? -General Knowledge

Description : In absence of ribosome in cell which function does not takes place? -General Knowledge

Last Answer : answer:

In absence of ribosome in cell which function does not takes place? -General Knowledge

Description : In absence of ribosome in cell which function does not takes place? -General Knowledge

Last Answer : answer:

what is the function of a ribosome?

Description : what is the function of a ribosome?

Last Answer : A ribosome is a molecular machine that coordinates protein assembly. Ribosomes are composed of several proteins with tightly coiled RNA (called ribosomal RNA or rRNA) wrapped around them. Ribosomes ... upcoming animation, you will see a ribosome assembling a polypeptide chain, a future protein.

What is ribosome ?

Description : What is ribosome ?

Last Answer : : A ribosome is a membraneless cell organelle that primarily assists in the synthesis of protein and provides the necessary enzymes for protein.

What is the difference between ribosome and lysosome ?

Description : What is the difference between ribosome and lysosome ?

Last Answer : ribosome 1. Not covered with any covering. 2. It is made up of RNA and histone (protein). 3. They are attached to different cell organelles or isolated in the cytoplasm. 4. It is divided ... the cell is distributed almost evenly throughout. 4. It is intact. 5. It helps in intracellular digestion.

Who named the ribosome ?

Last Answer : : The ribosome is named Palade

`tRNA` recognises ribosome by

Description : `tRNA` recognises ribosome by

Last Answer : `tRNA` recognises ribosome by A. `T Phi C` loop B. DHU loop C. Anticodon arm D. AA-site

Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA

Description : Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA

Last Answer : Labelled-D contains :- (i) A few RNA molecules (ii) 70s ribosome (iii) Enzymes (iv) Circular DNA A. ii, iv B. ... iv, C. ii, iii, iv D. i, ii, iii, iv

Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) Histone absent ( c ) Compartmentali

Description : Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) Histone absent ( c ) Compartmentali

Last Answer : Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) ... b and c C. a and c D. b and d

Nobody is the name given to (A) Ribosome (B) Microsome (C) Centrosome (D) Nucleosome

Description : Nobody is the name given to (A) Ribosome (B) Microsome (C) Centrosome (D) Nucleosome

Last Answer : Answer : C

ATP is required for (A) Fusion of 40S and 60S of ribosome (B) Accommodation tRNA amino acid in a site of ribosome (C) Movement of ribosome along mRNA (D) formation of tRNA amino acid complex

Description : ATP is required for (A) Fusion of 40S and 60S of ribosome (B) Accommodation tRNA amino acid in a site of ribosome (C) Movement of ribosome along mRNA (D) formation of tRNA amino acid complex

Last Answer : Answer : D

GTP is not required for (A) Capping L of mRNA (B) Fusion of 40S and 60S of ribosome (C) Accommodation of tRNA amino acid (D) Formation of tRNA amino acid complex

Description : GTP is not required for (A) Capping L of mRNA (B) Fusion of 40S and 60S of ribosome (C) Accommodation of tRNA amino acid (D) Formation of tRNA amino acid complex

Last Answer : Answer : D

AN Eukaryotic ribosome is made up of ________ sub unit. (A) 40S and 60S (B) 40S and 50S (C) 40S and 80S (D) 60S and 80S

Description : AN Eukaryotic ribosome is made up of ________ sub unit. (A) 40S and 60S (B) 40S and 50S (C) 40S and 80S (D) 60S and 80S

Last Answer : Answer : A

A prokaryotic ribosome is made up of ________ sub units. (A) 20 S and 50S (B) 30S and 50S (C) 30S and 60S (D) 20S and 50S

Description : A prokaryotic ribosome is made up of ________ sub units. (A) 20 S and 50S (B) 30S and 50S (C) 30S and 60S (D) 20S and 50S

Last Answer : Answer : B

After formation of a peptide bond, mRNA is translocated along the ribosome by (A) eEF-1 and GTP (B) eEF-2 and GTP (C) Peptidyl transferase and GTP (D) Peptidyl transferase and ATP

Description : After formation of a peptide bond, mRNA is translocated along the ribosome by (A) eEF-1 and GTP (B) eEF-2 and GTP (C) Peptidyl transferase and GTP (D) Peptidyl transferase and ATP

Last Answer : Answer : B

A splice some contains all the following except (A) hnRNA (B) snRNAs (C) Some proteins (D) Ribosome

Description : A splice some contains all the following except (A) hnRNA (B) snRNAs (C) Some proteins (D) Ribosome

Last Answer : Answer : D

The enzyme amino acyl tRNA synthetase is involved in (A) Dissociation of discharged tRNA from 80S ribosome (B) Charging of tRNA with specific amino acids (C) Termination of protein synthesis (D) Nucleophilic attack on esterified carboxyl group of peptidyl tRNA

Description : The enzyme amino acyl tRNA synthetase is involved in (A) Dissociation of discharged tRNA from 80S ribosome (B) Charging of tRNA with specific amino acids (C) Termination of protein synthesis (D) Nucleophilic attack on esterified carboxyl group of peptidyl tRNA

Last Answer : Answer : B

The function of a repressor protein in an operon system is to prevent synthesis by binding to (A) The ribosome (B) A specific region of the operon preventing transcription of structural genes (C) The RNA polymerase (D) A specific region of the mRNA preventing translation to protein

Description : The function of a repressor protein in an operon system is to prevent synthesis by binding to (A) The ribosome (B) A specific region of the operon preventing transcription of structural genes (C) The RNA polymerase (D) A specific region of the mRNA preventing translation to protein

Last Answer : Answer : B

In mammalian cells, ribosomal RNA is produced mainly in the (A) Nucleus (B) Nucleolus (C) Ribosome (D) Golgi apparatus

Description : In mammalian cells, ribosomal RNA is produced mainly in the (A) Nucleus (B) Nucleolus (C) Ribosome (D) Golgi apparatus

Last Answer : Answer : B

The first amino acid incorporated in a polypeptide in a ribosome of a bacterium is (A) N formyl methionine (B) Methionine (C) Alamine (D) Glycine

Description : The first amino acid incorporated in a polypeptide in a ribosome of a bacterium is (A) N formyl methionine (B) Methionine (C) Alamine (D) Glycine

Last Answer : Answer : A

The first amino acid incorporated in a polypeptide in a ribosome of a human is (A) N formyl methionine (B) Methionine (C) Phenyl alanine (D) Hydroxy lysine

Description : The first amino acid incorporated in a polypeptide in a ribosome of a human is (A) N formyl methionine (B) Methionine (C) Phenyl alanine (D) Hydroxy lysine

Last Answer : Answer : B

A growing peptide in a ribosome can not be shifted to the adjacent ribosome because (A) It is firmly attached (B) It will get the amino acid cleaved (C) The gap between the ribosomes is too big for a shift (D) The adjacent ribosomes have different composition

Description : A growing peptide in a ribosome can not be shifted to the adjacent ribosome because (A) It is firmly attached (B) It will get the amino acid cleaved (C) The gap between the ribosomes is too big for a shift (D) The adjacent ribosomes have different composition

Last Answer : Answer : C

In mammalian cells rRNA is produced mainly in the (A) Endoplasmic reticulum (B) Ribosome (C) Nucleolus (D) Nucleus

Description : In mammalian cells rRNA is produced mainly in the (A) Endoplasmic reticulum (B) Ribosome (C) Nucleolus (D) Nucleus

Last Answer : C

The most active site of protein synthesis is the (A) Nucleus (B) Ribosome (C) Mitochondrion (D) Cell sap

Description : The most active site of protein synthesis is the (A) Nucleus (B) Ribosome (C) Mitochondrion (D) Cell sap

Last Answer : B

70s type ribosome is found in

Description : 70s type ribosome is found in

Last Answer : Ans. Mitochondria

RNA that transfer amino acids from cytoplasm to ribosome

Description : RNA that transfer amino acids from cytoplasm to ribosome

Last Answer : Ans. m-RNA

The most important mechanism by which gram negative bacilli acquire chloramphenicol resistance is (a) Decreased permeability into the bacterial cell (b) Acquisition of a plasmid encoded for chloramphenicol acetyl transferase (c) Lowered affinity of the bacterial ribosome for chloramphenicol (d) Switching over from ribosomal to mitochondrial protein synthesis

Description : The most important mechanism by which gram negative bacilli acquire chloramphenicol resistance is (a) Decreased permeability into the bacterial cell (b) Acquisition of a plasmid encoded ... bacterial ribosome for chloramphenicol (d) Switching over from ribosomal to mitochondrial protein synthesis

Last Answer : Ans: B

A particular cell organelle is sometimes referred to as the 'suicide bag' because it contains certain enzymes that can break down the cell components or even the whole cell. Which one of the following is such an organelle? (a) Lysosome (b) Mesosome (c) Phagosome (d) Ribosome

Description : A particular cell organelle is sometimes referred to as the 'suicide bag' because it contains certain enzymes that can break down the cell components or even the whole cell. Which one of the following is such an organelle? (a) Lysosome (b) Mesosome (c) Phagosome (d) Ribosome

Last Answer : Ans:(d)

The organelle that make ATP is (a) Microbody (b) Nucleus (c) Mitochondrion (d) Ribosome

Description : The organelle that make ATP is (a) Microbody (b) Nucleus (c) Mitochondrion (d) Ribosome

Last Answer : Ans:(c)

Outside the nucleus DNA is found in - (1) Golgi bodies (2) Mitochondria (3) Ribosome (4) Endoplasmic reticulum

Description : Outside the nucleus DNA is found in - (1) Golgi bodies (2) Mitochondria (3) Ribosome (4) Endoplasmic reticulum

Last Answer : (2) Mitochondria Explanation: In eukaiyotic (with nucleus) cells, the vast majority of DNA is found in the nucleus as discrete bodies called chromosomes. The exception to this being the small amount ... cells, more than 99% of the total DNA is nuclear genomic DNA and the remainder mitochondrial.

Which one of the following Is also called the ‘powerplants’ of the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome

Description : Which one of the following Is also called the ‘powerplants’ of the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome

Last Answer : (2) Mitochondrion Explanation: Mitochondria through the process of aerobic respiration, in eukaryotic cells produce ATP (energy currency of the cell). Hence, it is known as ‘powerplant of the cell'.

Bacterial cells do not have - (1) Cell wall (2) Plasma membrane (3) Ribosome (4) Mitochondria

Description : Bacterial cells do not have - (1) Cell wall (2) Plasma membrane (3) Ribosome (4) Mitochondria

Last Answer : (4) Mitochondria Explanation: Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Bacteria are prokaiyotes, which ... are cells that don't possess membrane-bound organelles. Mitochondria are membrane-bound organelles.

Which of the following organelle is responsible for synthesizing of proteins in the cell? (1) Golgi apparatus (2) Ribosome (3) Lysosome (4) Nucleus

Description : Which of the following organelle is responsible for synthesizing of proteins in the cell? (1) Golgi apparatus (2) Ribosome (3) Lysosome (4) Nucleus

Last Answer : (2) Ribosome Explanation: The Ribosome, a complex molecule made of ribosomal RNA molecules, is responsible for protein synthesis in the cells.

Which one of the following is called the 'digestive bag' in the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome

Description : Which one of the following is called the 'digestive bag' in the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome

Last Answer : (4) Lysosome Explanation: Lysosomes are known as digestive bag because it digest every foreign material as well as worn out cell organelles. They contain powerful digestive enzymes which are capable of breaking down all organic materials.

Which one of the following is also called the 'power plants' of the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome

Description : Which one of the following is also called the 'power plants' of the cell? (1) Golgi body (2) Mitochondrion (3) Ribosome (4) Lysosome

Last Answer : (2) Mitochondrion Explanation: In cell biology, a mitochondrion (plural mitochondria) is a membrane-enclosed organelle found in most eukaryotic cells. These organelles range from 0.5 to .0 micrometer (im) ... of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy.

The process of translation is (a) ribosome synthesis (b) protein synthesis (c) DNA synthesis (d) RNA synthesis.

Description : The process of translation is (a) ribosome synthesis (b) protein synthesis (c) DNA synthesis (d) RNA synthesis.

Last Answer : (c) DNA synthesis

The RNA that pick up specific amino acid from amino acid pool in the cytoplasm to ribosome during protein synthesis is called (a) rRNA (b) RNA (c) mRNA (d) tRNA.

Description : The RNA that pick up specific amino acid from amino acid pool in the cytoplasm to ribosome during protein synthesis is called (a) rRNA (b) RNA (c) mRNA (d) tRNA.

Last Answer : a) rRNA

During translation initiation in prokaryotes, a GTP molecule is needed in (a) formation of formyl-met-tRNA (b) binding of 30S subunit of ribosome with mRNA (c) association of 30S mRNA with formyl-met- tRNA (d) association of 50S subunit of ribosome with initiation complex.

Description : During translation initiation in prokaryotes, a GTP molecule is needed in (a) formation of formyl-met-tRNA (b) binding of 30S subunit of ribosome with mRNA (c) association of 30S mRNA with formyl-met- tRNA (d) association of 50S subunit of ribosome with initiation complex.

Last Answer : (c) association of 30S mRNA with formyl-met- tRNA

Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the nucleolus as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.

Description : Protein synthesis in an animal cell occurs (a) only on the ribosomes present in cytosol (b) only on ribosome attached to the nuclear envelope and endoplasmic reticulum (c) on ribosome present in the ... as well as in cytoplasm (d) on ribosomes present in cytoplasm as well as in mitochondria.

Last Answer : (d) on ribosomes present in cytoplasm as well as in mitochondria.

The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese.

Description : The two sub-units of ribosome remain united at a critical ion level of (a) magnesium (b) calcium (c) copper (d) manganese.

Last Answer : (b) calcium