166481
Which of the following ribosomes are engaged in protein synthesis in animal cell:
1 Ribosomes which occur on nuclear membrane and E.R.
2 Ribosomes of only cytosol
3 Ribosomes of only nucleolus and cytosol
4 Ribosomes of only mitochondria and cytosol
Explanation:
Ribosomes present in nuclear membrane and endoplasmic reticulum (ER) take part in protein synthesis. Two or more ribosomes simultaneously engaged in protein synthesis on the same RNA strand forming polyribosomes. The ribosome functions as a template, bringing together different components required for protein synthesis.
AIPMT-2000
Molecular Basis of Inheritance and
166482
Which one of the following is not a part of a transcription unit in DNA?
1 A promoter
2 The structural gene
3 The inducer
4 A terminator
Explanation:
The segment of DNA that takes part in transcription is known as the transcription unit. Which include a promoter, the structural gene and a terminator. Promoter used to promote the transcription in DNA. Structural genes are typically viewed as those containing sequence of DNA corresponding to the amino acid of protein that will be produced, as long as said protein does not function to regulate gene expression.
AIPMT (Screening)-2012
Molecular Basis of Inheritance and
166485
Which of the following exercise a control over transcription
1 Operator
2 Regulator
3 Promoter
4 Recon
Explanation:
Formation of RNA from DNA is called transcription in it regulator exercise a control over transcription. - Operator is segment of DNA to which a protein called repressor is binds presents process of transcription. Regulator is a gene which control activity of operator. - Promoter is initial point, it is site of attachment of RNA polymerase where the process of transcription starts. - Recon - smallest unit of recombination it present with in the cistron.
AIPMT-1998
Molecular Basis of Inheritance and
166486
Due to discovery of which of the following in 1980, the evolution was termed as RNA world :
1 m-RNA, t-RNA- r-RNA synthesise proteins
2 In some virus RNA is genetic material
3 RNA have enzymatic property
4 RNA is not found in all cells
Explanation:
The RNA world hypothesis in a concept put forth in 1960s by Carl Woese, francis crick and Leslie Orgd. Ribozymes, catalytically active RNA molecule discovered in 1980 's, are self splicing introns indicating their possible role as intermediates in the evolution of biological systems from abiotic substances. This lead to the evolution of the RNA world hypothesis.
166481
Which of the following ribosomes are engaged in protein synthesis in animal cell:
1 Ribosomes which occur on nuclear membrane and E.R.
2 Ribosomes of only cytosol
3 Ribosomes of only nucleolus and cytosol
4 Ribosomes of only mitochondria and cytosol
Explanation:
Ribosomes present in nuclear membrane and endoplasmic reticulum (ER) take part in protein synthesis. Two or more ribosomes simultaneously engaged in protein synthesis on the same RNA strand forming polyribosomes. The ribosome functions as a template, bringing together different components required for protein synthesis.
AIPMT-2000
Molecular Basis of Inheritance and
166482
Which one of the following is not a part of a transcription unit in DNA?
1 A promoter
2 The structural gene
3 The inducer
4 A terminator
Explanation:
The segment of DNA that takes part in transcription is known as the transcription unit. Which include a promoter, the structural gene and a terminator. Promoter used to promote the transcription in DNA. Structural genes are typically viewed as those containing sequence of DNA corresponding to the amino acid of protein that will be produced, as long as said protein does not function to regulate gene expression.
AIPMT (Screening)-2012
Molecular Basis of Inheritance and
166485
Which of the following exercise a control over transcription
1 Operator
2 Regulator
3 Promoter
4 Recon
Explanation:
Formation of RNA from DNA is called transcription in it regulator exercise a control over transcription. - Operator is segment of DNA to which a protein called repressor is binds presents process of transcription. Regulator is a gene which control activity of operator. - Promoter is initial point, it is site of attachment of RNA polymerase where the process of transcription starts. - Recon - smallest unit of recombination it present with in the cistron.
AIPMT-1998
Molecular Basis of Inheritance and
166486
Due to discovery of which of the following in 1980, the evolution was termed as RNA world :
1 m-RNA, t-RNA- r-RNA synthesise proteins
2 In some virus RNA is genetic material
3 RNA have enzymatic property
4 RNA is not found in all cells
Explanation:
The RNA world hypothesis in a concept put forth in 1960s by Carl Woese, francis crick and Leslie Orgd. Ribozymes, catalytically active RNA molecule discovered in 1980 's, are self splicing introns indicating their possible role as intermediates in the evolution of biological systems from abiotic substances. This lead to the evolution of the RNA world hypothesis.
166481
Which of the following ribosomes are engaged in protein synthesis in animal cell:
1 Ribosomes which occur on nuclear membrane and E.R.
2 Ribosomes of only cytosol
3 Ribosomes of only nucleolus and cytosol
4 Ribosomes of only mitochondria and cytosol
Explanation:
Ribosomes present in nuclear membrane and endoplasmic reticulum (ER) take part in protein synthesis. Two or more ribosomes simultaneously engaged in protein synthesis on the same RNA strand forming polyribosomes. The ribosome functions as a template, bringing together different components required for protein synthesis.
AIPMT-2000
Molecular Basis of Inheritance and
166482
Which one of the following is not a part of a transcription unit in DNA?
1 A promoter
2 The structural gene
3 The inducer
4 A terminator
Explanation:
The segment of DNA that takes part in transcription is known as the transcription unit. Which include a promoter, the structural gene and a terminator. Promoter used to promote the transcription in DNA. Structural genes are typically viewed as those containing sequence of DNA corresponding to the amino acid of protein that will be produced, as long as said protein does not function to regulate gene expression.
AIPMT (Screening)-2012
Molecular Basis of Inheritance and
166485
Which of the following exercise a control over transcription
1 Operator
2 Regulator
3 Promoter
4 Recon
Explanation:
Formation of RNA from DNA is called transcription in it regulator exercise a control over transcription. - Operator is segment of DNA to which a protein called repressor is binds presents process of transcription. Regulator is a gene which control activity of operator. - Promoter is initial point, it is site of attachment of RNA polymerase where the process of transcription starts. - Recon - smallest unit of recombination it present with in the cistron.
AIPMT-1998
Molecular Basis of Inheritance and
166486
Due to discovery of which of the following in 1980, the evolution was termed as RNA world :
1 m-RNA, t-RNA- r-RNA synthesise proteins
2 In some virus RNA is genetic material
3 RNA have enzymatic property
4 RNA is not found in all cells
Explanation:
The RNA world hypothesis in a concept put forth in 1960s by Carl Woese, francis crick and Leslie Orgd. Ribozymes, catalytically active RNA molecule discovered in 1980 's, are self splicing introns indicating their possible role as intermediates in the evolution of biological systems from abiotic substances. This lead to the evolution of the RNA world hypothesis.
166481
Which of the following ribosomes are engaged in protein synthesis in animal cell:
1 Ribosomes which occur on nuclear membrane and E.R.
2 Ribosomes of only cytosol
3 Ribosomes of only nucleolus and cytosol
4 Ribosomes of only mitochondria and cytosol
Explanation:
Ribosomes present in nuclear membrane and endoplasmic reticulum (ER) take part in protein synthesis. Two or more ribosomes simultaneously engaged in protein synthesis on the same RNA strand forming polyribosomes. The ribosome functions as a template, bringing together different components required for protein synthesis.
AIPMT-2000
Molecular Basis of Inheritance and
166482
Which one of the following is not a part of a transcription unit in DNA?
1 A promoter
2 The structural gene
3 The inducer
4 A terminator
Explanation:
The segment of DNA that takes part in transcription is known as the transcription unit. Which include a promoter, the structural gene and a terminator. Promoter used to promote the transcription in DNA. Structural genes are typically viewed as those containing sequence of DNA corresponding to the amino acid of protein that will be produced, as long as said protein does not function to regulate gene expression.
AIPMT (Screening)-2012
Molecular Basis of Inheritance and
166485
Which of the following exercise a control over transcription
1 Operator
2 Regulator
3 Promoter
4 Recon
Explanation:
Formation of RNA from DNA is called transcription in it regulator exercise a control over transcription. - Operator is segment of DNA to which a protein called repressor is binds presents process of transcription. Regulator is a gene which control activity of operator. - Promoter is initial point, it is site of attachment of RNA polymerase where the process of transcription starts. - Recon - smallest unit of recombination it present with in the cistron.
AIPMT-1998
Molecular Basis of Inheritance and
166486
Due to discovery of which of the following in 1980, the evolution was termed as RNA world :
1 m-RNA, t-RNA- r-RNA synthesise proteins
2 In some virus RNA is genetic material
3 RNA have enzymatic property
4 RNA is not found in all cells
Explanation:
The RNA world hypothesis in a concept put forth in 1960s by Carl Woese, francis crick and Leslie Orgd. Ribozymes, catalytically active RNA molecule discovered in 1980 's, are self splicing introns indicating their possible role as intermediates in the evolution of biological systems from abiotic substances. This lead to the evolution of the RNA world hypothesis.
