163887
During cell division, the spindle fibres attach to the chromosome at a region called:
1 Chromocentre
2 Kinetochore
3 Centriole
4 Chromomere
Explanation:
Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes that are moved into position at the centre of the cell.
NCERT - I - 123
4 RBTS PAPER
163888
In which among the following stage is marked by terminalisation of chiasmata :
1 Diakinesis
2 Diplotene
3 Pachytene
4 Zygotene.
Explanation:
The final stage of meiotic prophase I is diakinesis. This is marked by terminalisation of chiasmata.
NCERT - I - 126
4 RBTS PAPER
163889
Tonoplast is differentially permeable membrane surrounding the :
1 Mitochondria
2 Cytoplasm
3 Vacuole
4 Nucleus
Explanation:
In plants, the tonoplast facilitates the transport of a number of ions and other materials against concentration gradients into the vacuole, hence their concentration is significantly higher in the vacuole than in the cytoplasm.
163887
During cell division, the spindle fibres attach to the chromosome at a region called:
1 Chromocentre
2 Kinetochore
3 Centriole
4 Chromomere
Explanation:
Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes that are moved into position at the centre of the cell.
NCERT - I - 123
4 RBTS PAPER
163888
In which among the following stage is marked by terminalisation of chiasmata :
1 Diakinesis
2 Diplotene
3 Pachytene
4 Zygotene.
Explanation:
The final stage of meiotic prophase I is diakinesis. This is marked by terminalisation of chiasmata.
NCERT - I - 126
4 RBTS PAPER
163889
Tonoplast is differentially permeable membrane surrounding the :
1 Mitochondria
2 Cytoplasm
3 Vacuole
4 Nucleus
Explanation:
In plants, the tonoplast facilitates the transport of a number of ions and other materials against concentration gradients into the vacuole, hence their concentration is significantly higher in the vacuole than in the cytoplasm.
163887
During cell division, the spindle fibres attach to the chromosome at a region called:
1 Chromocentre
2 Kinetochore
3 Centriole
4 Chromomere
Explanation:
Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes that are moved into position at the centre of the cell.
NCERT - I - 123
4 RBTS PAPER
163888
In which among the following stage is marked by terminalisation of chiasmata :
1 Diakinesis
2 Diplotene
3 Pachytene
4 Zygotene.
Explanation:
The final stage of meiotic prophase I is diakinesis. This is marked by terminalisation of chiasmata.
NCERT - I - 126
4 RBTS PAPER
163889
Tonoplast is differentially permeable membrane surrounding the :
1 Mitochondria
2 Cytoplasm
3 Vacuole
4 Nucleus
Explanation:
In plants, the tonoplast facilitates the transport of a number of ions and other materials against concentration gradients into the vacuole, hence their concentration is significantly higher in the vacuole than in the cytoplasm.
163887
During cell division, the spindle fibres attach to the chromosome at a region called:
1 Chromocentre
2 Kinetochore
3 Centriole
4 Chromomere
Explanation:
Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes that are moved into position at the centre of the cell.
NCERT - I - 123
4 RBTS PAPER
163888
In which among the following stage is marked by terminalisation of chiasmata :
1 Diakinesis
2 Diplotene
3 Pachytene
4 Zygotene.
Explanation:
The final stage of meiotic prophase I is diakinesis. This is marked by terminalisation of chiasmata.
NCERT - I - 126
4 RBTS PAPER
163889
Tonoplast is differentially permeable membrane surrounding the :
1 Mitochondria
2 Cytoplasm
3 Vacuole
4 Nucleus
Explanation:
In plants, the tonoplast facilitates the transport of a number of ions and other materials against concentration gradients into the vacuole, hence their concentration is significantly higher in the vacuole than in the cytoplasm.