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Cell_ The Unit Of Life

597 Questions Start Allen Test
All Exams Allen Errorless
Q576 Errorless NCRT(Exemplar Questions) MCQ
A common characteristic feature of plant sieve tube cells and most of mammalian erythrocytes is
A.
Absence of mitochondria
B.
Presence of cell wall
C.
Presence of haemoglobin
D.
Absence of nucleus
Q577 Errorless NCRT(Exemplar Questions) MCQ
Select one which is not true for ribosome
A.
Made of two sub units
B.
Form polysome
C.
May attach to mRNA
D.
Have no role in protein synthesis
Q578 Errorless NCRT(Exemplar Questions) MCQ
Which one of these is not a eukaryote [NCERT]
A.
Euglena
B.
Anabena
C.
Spirogyra
D.
Agaricus
Q579 Errorless NCRT(Exemplar Questions) MCQ
Which of the following dyes is best suited for staining chromosomes [NCERT]
A.
Basic Fuchsin
B.
Safranin
C.
Methylene blue
D.
Carmine
Q580 Errorless NCRT(Exemplar Questions) MCQ
Different cells have different sizes. Arrange the following cells in an ascending order of their size. Choose the correct option among the followings
(i) Mycoplasma
(ii) Ostrich eggs
(iii) Human RBC
(iv) Bacteria Options
A.
i, iv, iii & ii
B.
i, ii, iii & iv
C.
ii, i, iii & iv
D.
iii, ii, i & iv
Q581 Errorless NCRT(Exemplar Questions) MCQ
Which of the following features is common to prokaryotes and many eukaryotes [NCERT Pg. No. 90]
A.
Chromosomes present
B.
Celi wali present
C.
Nuclear membrane present
D.
Sub cellular organelles present
Q582 Errorless NCRT(Exemplar Questions) MCQ
Which of the following statements is true for a secretory cell
A.
Golgi apparatus is absent
B.
Rough Endoplasmic Reticulum (RER) is easily observed in the cell
C.
Only Smooth Endoplasmic Reticulum (SER) is present
D.
Secretory granules are formed in nucleus
Q583 Errorless NCRT(Exemplar Questions) MCQ
What is a tonoplast
A.
Outer membrane of mitochondria
B.
Inner membrane of chloroplast
C.
Membrane boundry of the vacuole of plant cells
D.
Cell membrane of a plant cell
[
Q584 Errorless NCRT(Exemplar Questions) MCQ
Which of the following is not true of a eukaryotic cell
A.
It has 80S type of ribosome present in the mitochondria
B.
It has 80S type of ribosome present in the cytoplasm
C.
Mitochondria contain circular DNA
D.
Membrane bound organelles are present
Q585 Errorless NCRT(Exemplar Questions) MCQ
Which of the following statements is not true for plasma membrane
A.
It is present in both plant and animal cell
B.
Lipid is present as a bilayer in it
C.
Proteins are present integrated as well as loosely associated with the lipid bilayer
D.
Carbohydrate is never found in it
Q586 Errorless NCRT(Exemplar Questions) MCQ
Plastid differs from mitochondria on the basis of one of the following features. Mark the right answer
A.
Presence of two layers of membrane
B.
Presence of ribosome
C.
Presence of chlorophyl
D.
Presence of DNA
Q587 Errorless NCRT(Exemplar Questions) MCQ
Which of the following is not a function of cytoskeleton in a cell
A.
Intracellular transport
B.
Maintenance of cell shape and structure
C.
Support of the organelle
D.
Cell motility
Q588 Errorless NCRT(Exemplar Questions) MCQ
The stain used to visualise mitochondria is [NCERT]
A.
Fast green
B.
Safranin
C.
Aceto carmine
D.
Janus green
Q589 Errorless Critical Thinking MCQ
See the given diagram (cell membrane) and identify the components labelled A, B, C, D and E from the list (i) to (vii) given along with

(i) Sugar
(ii) Protein
(iii) Lipid bilayer
(iv) Integral protein
(v) Cytoplasm
(vi) Cell wall
(vii) External protein The correct components are
A.
A-i, B-ii, C-iii, D-vii, E-v
B.
A-i, B-ii, C-iii, D-iv, E-vi
C.
A-ii, B-i, C-iii, D-iv, E-v
D.
A-i, B-ii, C-iii, D-iv, E-v
Q590 Errorless Critical Thinking MCQ
The given figure shows some of the missing structures in a plant cell (A - E). Identify the marked alphabets
A.
A - Tight junction, B - Rough endoplasmic reticulum, C - Golgi apparatus, D - Mitochondrion, E - Ribosome
B.
A - Plasmodesmata, B - Smooth endoplasmic reticulum C - Golgi apparatus, D - Mitochondrion, E - Ribosomes
C.
A - Desmosome, B - Rough endoplasmic reticulum C - Golgi apparatus, D - Mitochondrion, E - Ribosomes
D.
A - Plasmodesmata, B - Rough endoplasmic reticulum C - Golgi apparatus, D - Mitochondrion, E ā€“ Ribosomes
Q591 Errorless Critical Thinking MCQ
The given diagram shows important structures in an animal cell. Identify it N

(I) The structure replicates during mitosis and generates the spindle
(II) Major site for synthesis of lipid
(III) Power house of the cell
(IV) Store house of digestive enzyme
(V) Increases the surface area for the absorption of materials
(VI) Site of glycolysis
(VII)Site for active ribosomal RNA synthesis [NCERT Pg. No. 92]
A.
I - M, II - A, III- H, IV - J, V - N, VI - F, VII - D
B.
I - L, II - B, III- H, IV - J, V - N, VI - F, VII - D
C.
I - L, II - G, III - H, IV - J, V - N, VI - F, VII - D
D.
I - L, II - H, II - G, IV - J, V - N, VI - F, VII - D
Q592 Errorless Critical Thinking MCQ
Some bacterial cells were fixed for microscopic observation. A structure X was observed on most occasions at the cel membrane V In the above diagram, label X represents [NCERT]
A.
Mesosome
B.
Ribosome
C.
Plasmids
D.
Nucleoid
Q593 Errorless Critical Thinking MCQ
Mitochondria and chloroplast are (A) Semi-autonomous organelles (B) Formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery Which one of the following options is correct
A.
Both A and B are correct
B.
B is true but A is false
C.
A is true but B is false
D.
Both A and B are false
Q594 Errorless Critical Thinking MCQ
Match Column I with Column II.
Column-IColumn-II
(A)Amyloplast
(B)Elaioplast
(C)Chloroplasts
(D)Chromoplasts
(E)Leucoplast
(P)Store protein granules
(Q)Store oils or fats
(R)Contain chlorophyll pigments
(S)Contain coloured pigments other than chlorophyll
(T)Contain colourless pigments
A.
Aā€“P, Bā€“Q, Cā€“R, Dā€“S, Eā€“T
B.
Aā€“Q, Bā€“P, Cā€“R, Dā€“S, Eā€“T
C.
Aā€“P, Bā€“Q, Cā€“S, Dā€“R, Eā€“T
D.
Aā€“T, Bā€“Q, Cā€“R, Dā€“S, Eā€“P
Q595 Errorless Assertion and Reason MCQ
Assertion: $Na^+-K^+$ ATPase is an important membrane-associated enzyme. Reason: It helps in ion transfer across the membrane.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q596 Errorless Assertion and Reason MCQ
Assertion: Leucoplasts give rise to other types of plastids. Reason: Chromoplasts do not get changed to other types of plastids.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q597 Errorless Assertion and Reason MCQ
Assertion: Cell wall is not found in an animal cell. Reason: Animal cells are covered by cell membrane.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.