science
Grade-10
Easy
Question
What does ‘S’ represent in the diagram?

- Synthesis of organelle
- Synthesis of DNA
- Synthesis of plasma membrane
- None of these
Hint:
The biological material made up of nucleic acids.
The correct answer is: Synthesis of DNA
- S phase or synthetic phase marks the preparatory phase before cell division
- The DNA replicates and makes a copy during this phase
- S phase is also called interphase
- S phase is followed by prophase ((where actual division of cell starts)
Related Questions to study
science
In mitosis, the copy of chromosomes appears during
- Early prophase
- Late prophase
- Interphase
- Late telophase
In mitosis, the copy of chromosomes appears during
scienceGrade-10
- Early prophase
- Late prophase
- Interphase
- Late telophase
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In ______ process of mitosis can be studied.
- Anther
- Stigma
- Root tip.
- All of these
In ______ process of mitosis can be studied.
scienceGrade-10
- Anther
- Stigma
- Root tip.
- All of these
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Which of the following statement is correct?
- Ratio of surface area to volume controls the cell size.
- Ratio of length to height controls the cell size.
- Ratio of surface area to size controls the cell size.
- None of these
Which of the following statement is correct?
scienceGrade-10
- Ratio of surface area to volume controls the cell size.
- Ratio of length to height controls the cell size.
- Ratio of surface area to size controls the cell size.
- None of these
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________are repetitive stretches of DNA present at the ends of linear chromosomes.
- Pores
- Hexomere
- Telomeres
- Monomers
________are repetitive stretches of DNA present at the ends of linear chromosomes.
scienceGrade-10
- Pores
- Hexomere
- Telomeres
- Monomers
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Which phase of mitosis is shown in the picture given below?

- Prophase
- Anaphase
- Metaphase
- Telophase
Which phase of mitosis is shown in the picture given below?

scienceGrade-10
- Prophase
- Anaphase
- Metaphase
- Telophase
science
Membrane bound nucleus is present in ___________.
- Archae
- Bacteria
- Animal cell
- None of the above
Membrane bound nucleus is present in ___________.
scienceGrade-10
- Archae
- Bacteria
- Animal cell
- None of the above
science
Which stage comes between prophase and telophase?
- Leptotene
- Zygotene
- Pachytene
- Anaphase
Which stage comes between prophase and telophase?
scienceGrade-10
- Leptotene
- Zygotene
- Pachytene
- Anaphase
science
What will happen if the nucleus is removed from the cell?
- The metabolism of cell will decrease.
- The metabolism of cell will increase.
- The cell will stop working.
The cell will be very active.
What will happen if the nucleus is removed from the cell?
scienceGrade-10
- The metabolism of cell will decrease.
- The metabolism of cell will increase.
- The cell will stop working.
The cell will be very active.
science
Amount of ________ is less in the chromosome and more in the nucleus.
- RNA
- Histone protein
- Non histone proteins
- DNA
Amount of ________ is less in the chromosome and more in the nucleus.
scienceGrade-10
- RNA
- Histone protein
- Non histone proteins
- DNA
science
In a cell, nucleoprotein is synthesized in________.
- Nucleoplasm
- Lipids
- Outside the nucleolus
- Nuclear membrane
In a cell, nucleoprotein is synthesized in________.
scienceGrade-10
- Nucleoplasm
- Lipids
- Outside the nucleolus
- Nuclear membrane
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________ regulates the physiological activities of the cell.
- Nucleus
- Mitochondria
- Plastids
- Vacuoles
________ regulates the physiological activities of the cell.
scienceGrade-10
- Nucleus
- Mitochondria
- Plastids
- Vacuoles
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DNA is primarily situated in_________.
- Vacuole
- Brain of the cell
- Cytoplasm and vacuole
- All of the above
DNA is primarily situated in_________.
scienceGrade-10
- Vacuole
- Brain of the cell
- Cytoplasm and vacuole
- All of the above
science
There are _____ pairs of chromosomes in humans.
- 24
- 23
- 42
- 46
There are _____ pairs of chromosomes in humans.
scienceGrade-10
- 24
- 23
- 42
- 46
science
The word chromosome comes from______.
- Indian word
- Latin word
- French word
- Greek word
The word chromosome comes from______.
scienceGrade-10
- Indian word
- Latin word
- French word
- Greek word
science
Which of the following content is correct?
- Chromosomes present in the form of threads of DNA and protein molecules is called chromatin.
- The heterochromatin is highly dense.
- Euchromatin is mild, less condensed.
- All of these
Which of the following content is correct?
scienceGrade-10
- Chromosomes present in the form of threads of DNA and protein molecules is called chromatin.
- The heterochromatin is highly dense.
- Euchromatin is mild, less condensed.
- All of these