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This Sińgle circular DNA molecule is found in:-
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Important Questions on Cell : The Unit of Life
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Labelled-D contains :-
(i) A few RNA molecules
(ii) 70 s ribosome
(iii) Enzymes
(iv) Circular DNA
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(a) granular structure
(b) first observed under the electron microscope as dense particles by George Palade
(c) composed of RNA and proteins
(d) not surrounded by any membrane
Above given statements are true for which cell organelle?
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Find incorrect statement with regard to centrosome and centrioles:-
(a) Centrosomes are surrounded by amorphous pericentriolar material.
(b) In centrosome, both centrioles lie parallel to each other in which each has an organization like the cartwheel
(c) Centrioles are made up of nine unevenly spaced peripheral fibrils of tubulin
(d) Hub is the central proteinaceous part of the centriole
(e) Proteinaceous radial spokes connect the hub to peripheral triplets
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(a) Minute vesicles
(b) Membrane-bound
(c) Contained enzymes
(d) Present in plant and animals
The above statements are correct for:-
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Which of the following are correct for the cell which has naked ds circular DNA?
(a) Both 70 S and 80 S ribosomes
(b) Histone absent
(c) Compartmentalisation of cytoplasm absent
(d) Always diploid
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Which of the following is/are function(s) of lipochondria?
(I) Chemical modification of lipids and proteins
(II) Detoxification
(III) Formation of acrosome
(IV) Glycogen synthesis & breakdown
Choose the correct option -
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Cilia differ from flagella:-
(A) in having a small size
(B) in having noncoordinated movement
(C) in taking part in attachment, feeding, and sensation
(D) in number of microtubules
(E) in working like oars, Choose the correct option:-
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A researcher made an observation about a protein made by ribosome and eventually used to build a cell's plasma membrane. The protein in the membrane was actually slightly different from the protein made by ribosome, the protein was probably pass through -
