Tag: cytoplasm
Questions Related to cytoplasm
End of prophase is marked by?
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Initiation of condensation of chromosomal material
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Complete disintegration of nuclear membrane
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Reappearance of ER, Golgi body, nucleolus and nuclear envelop
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Alignment of chromosomes at the equator
Cells capable of division are
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Stem cells.
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Meristematic cells.
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Undifferentiated cells.
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All of the above.
Stem cells are totipotent cells that can able to differentiate and divide into any type of cells of the body. meristematic cells are undifferentiated cells of the plants that can able to divide and form tissues, organs of the plant. so cells capable of division are all the cells including stem cells, meristematic cells and undifferentiated cells. Hence option D is correct.
A nucleated differentiated cell that has lost the power to dedifferentiate is ____________.
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Nerve cells.
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Kidney cells.
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Liver cells.
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All of the above.
RBCs are
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Differentiated cells.
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Undifferentiated cells.
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Dedifferentiated cells.
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Dead cells.
Mammalian erythrocytes also called as red blood cells are formed in bone marrow from multipotential hemocytoblast and further converted to erythroblast (normoblast). The nucleus and mitochondria of erythroblast disappear and it is converted to mature erythrocyte with haemoglobin. So RBC's are differentiated cells which lack a nucleus.
Which one of the following is anucleate?
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Sieve tube
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Companion cell
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Medullary ray
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All of the above
Formation of meristems cork cambium from fully differentiated parenchyma cells is an example of :
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Differentiation
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Redifferentiation
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Dedifferentiation
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Regenration
Any specialized plant cell that is dispersed among cells of a different kind is called a
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Marcophyll
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Xenophyte
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Normoblast
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ldioblast
Dedifferentiated cells are formed in the region of
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Injury.
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Regeneration.
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Secondary growth.
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All of the above.
An undividable differentiated cell sometimes gains the power to divide. This process is called dedifferentiation. Wound healing after injury and secondary growth in plants are some of the best examples of dedifferentiation. Dedifferentiation is one of the mechanisms of natural regeneration. So answer D is correct.
Which part of the cell is wrongly matched with its function?
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Nucleus controls the activities of the cell
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Cytoplasm makes chlorophyll in green plants
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Cell wall protects a plant cell
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Cell membrane lets water and gas in and out of the cell
The nucleus contains the genetic material of the cell and thus regulates all the activities of the cell.
Which of the following is a part of protoplasm present between the nuclear membrane and cell organelle?
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Leucoplast
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Nucleoplasm
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Cytoplasm
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None of the above
Cytoplasm is a semi-fluid jelly like substance which contains various organelles and inclusions. It also contains a number of inorganic substances forming a clear true solution as well as organic substances like lipids, proteins and carbohydrates. It is homogenous and colourless in nature.