336147
Select the correct statements regarding S-phase
1 Occurs between \({G_1}\) and \({G_2}\)
2 DNA replication begins in the cytoplasm
3 Centrioles duplicate in the nucleus
4 As DNA is doubled, number of chromosomes also doubles
Explanation:
S or synthesis phase occurs between \({G_1}\) and \({G_2}\) phases of interphase. It is characterised by the replication of DNA, where the amount of DNA becomes double but number of chromosomes remain same. In this stage, DNA duplicates in the nucleus while centriole duplicates in the cytoplasm.
BIOXI10: CELL CYCLE AND CELL DIVISION
336148
An onion root tip has 16 chromosomes in each cell. How many chromosomes the cell would have at S -phase?
1 28
2 16
3 62
4 7
Explanation:
Chromosomes remain the same, DNA doubles.
BIOXI10: CELL CYCLE AND CELL DIVISION
336149
In plant cells mitotic division occurs in
1 Diploid cells
2 Haploid cells
3 Polyploid cells
4 Both 1 and 2
Explanation:
Plants can show mitotic divisions in both haploid and diploid cells.
BIOXI10: CELL CYCLE AND CELL DIVISION
336150
At which stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?
1 During entire prophase
2 During Telophase
3 During S phase
4 During \({G_2}\) stage of prophase
Explanation:
Histone proteins are basic proteins and are used in packing of eukaryotic (absent in prokaryotes) DNA. DNA and histones together comprise chromatin, forming bulk of the eukaryotic chromosomes. Histones are of five major kinds \({H_1},\;{H_{2A}},\;{H_{2B}},\;{H_3}\) and \({H_4}\). \({H_1}\) histones like neighbouring nucleosomes while others are elements of nucleosome structure. During S-phase of cell cycle synthesis of histone proteins takes place because at this stage number of chromosomes becomes double to that of somatic number.
AIPMT - 2006
BIOXI10: CELL CYCLE AND CELL DIVISION
336151
Assertion : Interphase is also called inter-mitosis. Reason : Interphase occurs between two dividing M-phase.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion. Cell cycle consists of two stages, a long non-individual growing I-phase and a short dividing M-phase. Interphase is series of changes that takes place in a newly formed cell and its nucleus before it becomes capable of division again. Therefore, it is also called intermitosis
336147
Select the correct statements regarding S-phase
1 Occurs between \({G_1}\) and \({G_2}\)
2 DNA replication begins in the cytoplasm
3 Centrioles duplicate in the nucleus
4 As DNA is doubled, number of chromosomes also doubles
Explanation:
S or synthesis phase occurs between \({G_1}\) and \({G_2}\) phases of interphase. It is characterised by the replication of DNA, where the amount of DNA becomes double but number of chromosomes remain same. In this stage, DNA duplicates in the nucleus while centriole duplicates in the cytoplasm.
BIOXI10: CELL CYCLE AND CELL DIVISION
336148
An onion root tip has 16 chromosomes in each cell. How many chromosomes the cell would have at S -phase?
1 28
2 16
3 62
4 7
Explanation:
Chromosomes remain the same, DNA doubles.
BIOXI10: CELL CYCLE AND CELL DIVISION
336149
In plant cells mitotic division occurs in
1 Diploid cells
2 Haploid cells
3 Polyploid cells
4 Both 1 and 2
Explanation:
Plants can show mitotic divisions in both haploid and diploid cells.
BIOXI10: CELL CYCLE AND CELL DIVISION
336150
At which stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?
1 During entire prophase
2 During Telophase
3 During S phase
4 During \({G_2}\) stage of prophase
Explanation:
Histone proteins are basic proteins and are used in packing of eukaryotic (absent in prokaryotes) DNA. DNA and histones together comprise chromatin, forming bulk of the eukaryotic chromosomes. Histones are of five major kinds \({H_1},\;{H_{2A}},\;{H_{2B}},\;{H_3}\) and \({H_4}\). \({H_1}\) histones like neighbouring nucleosomes while others are elements of nucleosome structure. During S-phase of cell cycle synthesis of histone proteins takes place because at this stage number of chromosomes becomes double to that of somatic number.
AIPMT - 2006
BIOXI10: CELL CYCLE AND CELL DIVISION
336151
Assertion : Interphase is also called inter-mitosis. Reason : Interphase occurs between two dividing M-phase.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion. Cell cycle consists of two stages, a long non-individual growing I-phase and a short dividing M-phase. Interphase is series of changes that takes place in a newly formed cell and its nucleus before it becomes capable of division again. Therefore, it is also called intermitosis
336147
Select the correct statements regarding S-phase
1 Occurs between \({G_1}\) and \({G_2}\)
2 DNA replication begins in the cytoplasm
3 Centrioles duplicate in the nucleus
4 As DNA is doubled, number of chromosomes also doubles
Explanation:
S or synthesis phase occurs between \({G_1}\) and \({G_2}\) phases of interphase. It is characterised by the replication of DNA, where the amount of DNA becomes double but number of chromosomes remain same. In this stage, DNA duplicates in the nucleus while centriole duplicates in the cytoplasm.
BIOXI10: CELL CYCLE AND CELL DIVISION
336148
An onion root tip has 16 chromosomes in each cell. How many chromosomes the cell would have at S -phase?
1 28
2 16
3 62
4 7
Explanation:
Chromosomes remain the same, DNA doubles.
BIOXI10: CELL CYCLE AND CELL DIVISION
336149
In plant cells mitotic division occurs in
1 Diploid cells
2 Haploid cells
3 Polyploid cells
4 Both 1 and 2
Explanation:
Plants can show mitotic divisions in both haploid and diploid cells.
BIOXI10: CELL CYCLE AND CELL DIVISION
336150
At which stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?
1 During entire prophase
2 During Telophase
3 During S phase
4 During \({G_2}\) stage of prophase
Explanation:
Histone proteins are basic proteins and are used in packing of eukaryotic (absent in prokaryotes) DNA. DNA and histones together comprise chromatin, forming bulk of the eukaryotic chromosomes. Histones are of five major kinds \({H_1},\;{H_{2A}},\;{H_{2B}},\;{H_3}\) and \({H_4}\). \({H_1}\) histones like neighbouring nucleosomes while others are elements of nucleosome structure. During S-phase of cell cycle synthesis of histone proteins takes place because at this stage number of chromosomes becomes double to that of somatic number.
AIPMT - 2006
BIOXI10: CELL CYCLE AND CELL DIVISION
336151
Assertion : Interphase is also called inter-mitosis. Reason : Interphase occurs between two dividing M-phase.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion. Cell cycle consists of two stages, a long non-individual growing I-phase and a short dividing M-phase. Interphase is series of changes that takes place in a newly formed cell and its nucleus before it becomes capable of division again. Therefore, it is also called intermitosis
336147
Select the correct statements regarding S-phase
1 Occurs between \({G_1}\) and \({G_2}\)
2 DNA replication begins in the cytoplasm
3 Centrioles duplicate in the nucleus
4 As DNA is doubled, number of chromosomes also doubles
Explanation:
S or synthesis phase occurs between \({G_1}\) and \({G_2}\) phases of interphase. It is characterised by the replication of DNA, where the amount of DNA becomes double but number of chromosomes remain same. In this stage, DNA duplicates in the nucleus while centriole duplicates in the cytoplasm.
BIOXI10: CELL CYCLE AND CELL DIVISION
336148
An onion root tip has 16 chromosomes in each cell. How many chromosomes the cell would have at S -phase?
1 28
2 16
3 62
4 7
Explanation:
Chromosomes remain the same, DNA doubles.
BIOXI10: CELL CYCLE AND CELL DIVISION
336149
In plant cells mitotic division occurs in
1 Diploid cells
2 Haploid cells
3 Polyploid cells
4 Both 1 and 2
Explanation:
Plants can show mitotic divisions in both haploid and diploid cells.
BIOXI10: CELL CYCLE AND CELL DIVISION
336150
At which stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?
1 During entire prophase
2 During Telophase
3 During S phase
4 During \({G_2}\) stage of prophase
Explanation:
Histone proteins are basic proteins and are used in packing of eukaryotic (absent in prokaryotes) DNA. DNA and histones together comprise chromatin, forming bulk of the eukaryotic chromosomes. Histones are of five major kinds \({H_1},\;{H_{2A}},\;{H_{2B}},\;{H_3}\) and \({H_4}\). \({H_1}\) histones like neighbouring nucleosomes while others are elements of nucleosome structure. During S-phase of cell cycle synthesis of histone proteins takes place because at this stage number of chromosomes becomes double to that of somatic number.
AIPMT - 2006
BIOXI10: CELL CYCLE AND CELL DIVISION
336151
Assertion : Interphase is also called inter-mitosis. Reason : Interphase occurs between two dividing M-phase.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion. Cell cycle consists of two stages, a long non-individual growing I-phase and a short dividing M-phase. Interphase is series of changes that takes place in a newly formed cell and its nucleus before it becomes capable of division again. Therefore, it is also called intermitosis
336147
Select the correct statements regarding S-phase
1 Occurs between \({G_1}\) and \({G_2}\)
2 DNA replication begins in the cytoplasm
3 Centrioles duplicate in the nucleus
4 As DNA is doubled, number of chromosomes also doubles
Explanation:
S or synthesis phase occurs between \({G_1}\) and \({G_2}\) phases of interphase. It is characterised by the replication of DNA, where the amount of DNA becomes double but number of chromosomes remain same. In this stage, DNA duplicates in the nucleus while centriole duplicates in the cytoplasm.
BIOXI10: CELL CYCLE AND CELL DIVISION
336148
An onion root tip has 16 chromosomes in each cell. How many chromosomes the cell would have at S -phase?
1 28
2 16
3 62
4 7
Explanation:
Chromosomes remain the same, DNA doubles.
BIOXI10: CELL CYCLE AND CELL DIVISION
336149
In plant cells mitotic division occurs in
1 Diploid cells
2 Haploid cells
3 Polyploid cells
4 Both 1 and 2
Explanation:
Plants can show mitotic divisions in both haploid and diploid cells.
BIOXI10: CELL CYCLE AND CELL DIVISION
336150
At which stage of the cell cycle are histone proteins synthesised in a eukaryotic cell?
1 During entire prophase
2 During Telophase
3 During S phase
4 During \({G_2}\) stage of prophase
Explanation:
Histone proteins are basic proteins and are used in packing of eukaryotic (absent in prokaryotes) DNA. DNA and histones together comprise chromatin, forming bulk of the eukaryotic chromosomes. Histones are of five major kinds \({H_1},\;{H_{2A}},\;{H_{2B}},\;{H_3}\) and \({H_4}\). \({H_1}\) histones like neighbouring nucleosomes while others are elements of nucleosome structure. During S-phase of cell cycle synthesis of histone proteins takes place because at this stage number of chromosomes becomes double to that of somatic number.
AIPMT - 2006
BIOXI10: CELL CYCLE AND CELL DIVISION
336151
Assertion : Interphase is also called inter-mitosis. Reason : Interphase occurs between two dividing M-phase.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion. Cell cycle consists of two stages, a long non-individual growing I-phase and a short dividing M-phase. Interphase is series of changes that takes place in a newly formed cell and its nucleus before it becomes capable of division again. Therefore, it is also called intermitosis
