Tag: cytoplasm
Questions Related to cytoplasm
Hybridoma cells are
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nervous cells of frog
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hybrid cells resulting from myeloma cells
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only cells having oncogenes
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product of spore formation in bacteria.
Choose the correct answers from the alternatives given.
Slime molds have:
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pseudoplasmodia
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feeding stages consisting of solitary, individual cells
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spores that develop into free-living amoeboid cells
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spores that develop into flagellated gametes
The haploid spores are produced from the mass by meiosis, these spores are developed or germinated into flagellated gametes.
To observe Amoeba and Paramecium in a water drop, the drop was taken on a glass slide. If both the organisms were clearly seen, then the stain used must be ________.
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Methylene blue
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Iodine
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Safranin
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Eosin
Microorganisms can be observed under microscope using particular stain. To observe Amoeba and Paramecium in a water drop, the drop was taken on a glass slide. If both the organisms were clearly seen, then the stain used must be Methylene blue or thionin. Both these stains are LTP, that is Lipid transfer protein. They are used to observe animal cells like amoeba and paramecium through hybridization membranes like water. This stain makes the nucleus of amoeba and paramecium visible under microscope.
Shape of Paramecium is
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Circular
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Oval
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Rectangular
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Square
The Paramecium is a unicellular ciliated protozoan. It looks an oval, slipper-shaped micro-organism when observed under a microscope, rounded at the front/top and pointed at the back or bottom. It can also be seen by naked eyes.
Choose the correct answers from the alternatives given.
Which one of the following protists is not correctly linked to the type of movement it shows?
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Amoeboids-pseudopodia
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Ciliates-cilia
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Zooflagellates-flagella
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Sporozoa-flexing the pellicle
Sporozoa do not have flagella, cilia, or pseudopodia and they show gliding movement, amoeboids show movement by pseudopodia, ciliates by cilia and zooflagellates show by flagella, the pellicle is shown by paramecium.
Which of following organisms can be seen only under the microscope?
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Unicellular
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Multicellular
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Vertebrates
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All of the above
- Most unicellular organisms are of microscopic size and are thus classified as microorganisms, for example, Phytoplankton and protozoa range from about 0.001 mm to about 0.25 mm.
- Most of the multicellular organisms and vertebrates are visible to the naked eye, which means that it is possible to view them without using the microscope.
So, option A is the correct answer.
The term cytoskeleton was given by
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Koltzoff
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Rhodin
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Menke
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Park
- Cytoskeleton refers to the complex network of interlinking filaments and tubules which extend throughout the cytoplasm of the cell from the nucleus to the plasma membrane.
- They are composed of microtubules, actin filaments and intermediate filaments.
- They give shape and support to the cell and also facilitates movement within the cell (cytoplasmic streaming or cyclosis).
- It was discovered by Nikolai K. Koltsov in the year 1903.
- So, the correct answer is 'Koltzoff'.
Cytokinesis is a division of:
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Cytoplasm
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Nucleus
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chromosomes
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Nucleolus
Cytokinesis is the process of division of Cytoplasm. "Kinesis" means division and "cyto" refers to cytoplasm. it occurs during cell division. It is variable from plant cells to animal cells.
Select the correct statement _________________________.
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Histone protein is present in all prokaryotes but absent in animal cell
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ER is absent in eukaryotes but presents in prokaryotes
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Nuclear membrane is absent in prokaryotes but nuclear membrane is present in eukaryotes
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Ribosome is present in eukaryotic cells but absent in prokaryotic cells
Which of the following is correct?
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Cells of all living organisms have a nucleus
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Both animal and plant cells have a well defined cell wall
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In prokaryotes, there are no membrane bound organelles
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Cells are formed de novo from abiotic materials