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Cell_ The Unit Of Life

597 Questions Start Allen Test
All Exams Allen Errorless
Q551 Allen ANALYTICAL QUESTIONS MCQ
Ratio of protein and lipid in the membrane of erythrocytes of human being is :-
A.
1.8
B.
1.3
C.
0.80
D.
0.60
Q552 Allen ANALYTICAL QUESTIONS MCQ
A student did the cell fractionation of a tissue but forgot to label his tubes. The content of one tube when studied showed organelles bounded by membrane with activity of catalase enzyme. These organelles could be :-
A.
SER
B.
Chloroplast
C.
Lysosome
D.
Peroxisome
Q553 Allen ANALYTICAL QUESTIONS MCQ
Given below are two statement - Statement-I :- In plants, the tonoplast facilitates the transport of a number of ions and other materials against concentration gradient into the vacuole. Statement-II :- Golgi apparatus is the important site of formation of glycoprotein and glycolipids. In the light of the above statements, choose the correct answer from the options given below -
A.
Both statement I and statement II are correct
B.
Both statement I and statement II are incorrect
C.
Statement I is correct but statement II is incorrect
D.
Statement I is incorrect but statement II is correct
Q554 Allen ANALYTICAL QUESTIONS MCQ
Assertion (A) : Cell wall is a living rigid structure which form outer covering for the plasma membrane of fungi and plants. Reason (R) : Secondary cell wall is formed on the outer (towards middle lamella) side of the cell.
A.
Both Assertion and Reason are True and the Reason is a correct explanation of the Assertion.
B.
Both Assertion and Reason are True but Reason is not a correct explanation of the Assertion.
C.
Assertion is True but the Reason is False.
D.
Both Assertion and Reason are False.
Q555 Allen ANALYTICAL QUESTIONS MCQ
Assertion (A) : Chloroplast & Mitochondria are considered as "Semi-autonomous organelle" of the cell. Reason (R) : Both the organelle possess their own genetic material and have their own protein synthesising machinery.
A.
Both Assertion and Reason are True and the Reason is a correct explanation of the Assertion.
B.
Both Assertion and Reason are True but Reason is not a correct explanation of the Assertion.
C.
Assertion is True but the Reason is False.
D.
Both Assertion and Reason are False.
Q556 Allen ANALYTICAL QUESTIONS MCQ
Given below are two statement - Statement-I :- At number of places the nuclear envelop is interrupted by minute pores. Statement-II :- Material of the nucleus stained by the acidic dye was given the name chromatin by Flemming. In the light of the above statements, choose the correct answer from the options given below -
A.
Both statement I and statement II are correct
B.
Both statement I and statement II are incorrect
C.
Statement I is correct but statement II is incorrect
D.
Statement I is incorrect but statement II is correct
Q557 Allen ANALYTICAL QUESTIONS MCQ
Read the following statements carefully and select the option which includes incorrect statements -
(a) RER is frequently observed in the cells actively involved in lipid synthesis & secretion.
(b) The SER is the major site for protein synthesis
(c) The golgi cisternae are concentrically arranged near the nucleus.
(d) Lysosomes are rich in alkaline hydrolases.
A.
Statement (a), (b) and (c)
B.
Statement (a), (b) and (d)
C.
Statement (b), (c) and (d)
D.
Statement (a), (c) and (d)
Q558 Allen ANALYTICAL QUESTIONS MCQ
New cells generate from-
A.
bacterial fermentation
B.
regeneration of old cells
C.
pre-existing cells
D.
abiotic materials
Q559 Allen ANALYTICAL QUESTIONS MCQ
Select the wrong statement from the following:
A.
The chloroplasts are generally much larger than mitochondria
B.
Both chloroplasts and mitochondria contain an inner and an ou
C.
Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
D.
Both chloroplasts and mitochondria contain DNA
Q560 Allen ANALYTICAL QUESTIONS MCQ
Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given with -

Components:
(i) Cristae of mitochondria
(ii) Inner membrane of mitochondria
(iii) Cytoplasm
(iv) Smooth endoplasmic reticulum
(v) Rough endoplasmic reticulum
(vi) Mitochondrial matrix
(vii) Cell vacuole
(viii) Nucleus
A.
A-(i), B-(iv), C-(viii), D-(vi)
B.
A-(vi) B-(v), C-(iv), D-(vii)
C.
A—(v), B—(i), C—(iii), D—(ii)
D.
A—(v), B—(iv), C—(viii), D—(iii)
Q561 Allen ANALYTICAL QUESTIONS MCQ
The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D). Select the part correctly matched with its function.
A.
Part (A): Matrix - major site for respiratory chain enzymes
B.
Part (D): Outer membrane - gives rise to inner membrane by splitting
C.
Part (B): Inner membrane - forms infoldings called cristae
D.
Part (C): Cristae - possess single circular DNA molecule and ribosomes
Q562 Allen ANALYTICAL QUESTIONS MCQ
Which one of the following cellular parts is correctly described?
A.
Ribosomes - those on chloroplasts are larger (80 S) while those in the cytoplasm are smaller (70 S)
B.
Lysosomes-optimally active at a pH of about 8.5
C.
Thylakoids-flattened membranous sacs forming the grana of chloroplasts
D.
Centrioles - sites for active RNA synthesis
Q563 Allen ANALYTICAL QUESTIONS MCQ
Which one of the following organelle in the figure correctly matches with its function?
A.
Rough endoplasmic reticulum, protein synthesis
B.
Rough endoplasmic reticulum, formation of glycoproteins
C.
Golgi apparatus, protein synthesis
D.
Golgi apparatus, formation of glycolipids
Q564 Errorless Cell wall MCQ
The chief component of bacterial cell wall is
A.
Cellulose and chitin
B.
Cellulose and pectin
C.
Amino acids and polysaccharides
D.
Cellulose and carbohydrates
Q565 Errorless Plasma Membrane MCQ
In the given figure, the lipid molecules present in plasma membrane have polar heads and non-polar tails Which of the following figure represents the correct arrangement of lipids in lipids bilayer [NCERT]
A.
B.
C.
D.
Q566 Errorless Plasma Membrane MCQ
Singer and Nicholson's model of plasma membrane differs from Robertson's model in the
A.
Number of lipid layers
B.
Arrangement of lipid layers
C.
Arrangement of proteins
D.
Absence of protein in Singer and Nicholson's model
Q567 Errorless Plastids MCQ
Match Column - I with Column -– Il and select the correct option
Column-IColumn-II
(A)Type of chloroplast – Cup shaped
(B)Type of chloroplast – Girdle shaped
(C)Type of chloroplast – Stellate
(D)Type of chloroplast – Reticulate
(P)Algae – Ulothrix
(Q)Algae – Oedogonium
(R)Algae – Chlamydomonas
(S)Algae – Zygnema
A.
A-R, B-Q, C-P, D-S
B.
A-S, B-P, C-R, D-Q
C.
A-R, B-Q, C-S, D-P
D.
A-S, B-R, C-P, D-Q
Q568 Errorless Plastids MCQ
Examine the section view of chloroplast showing the different parts In which of the following options all the four blanks A, B, C and D are correctly identified
A.
A – Granum, B - Thylakoid, C - Stroma, D - Stromal lamella
B.
A – Thylakoid, B - Granum, C - Stromal lamella, D - Stroma
C.
A - Granum, B – Thylakoid, C - Stromal lamella, D - Stroma
D.
A - Thylakoid, B - Stromal lamella, C - Stroma, D - Granum
Q569 Errorless Endoplasmic reticulum and Golgi body MCQ
See the figure and identify it [NCERT Pg. No. 95]
A.
RER
B.
GB
C.
SER
D.
None
Q570 Errorless Centrosomes/Centriole Cilia, Flagella and Microtubules MCQ
The main structure of centriole is
A.
9 + 3 fibrils
B.
9 + 2 fibrils
C.
Nine triplets
D.
13 globular subunits
Q571 Errorless Centrosomes/Centriole Cilia, Flagella and Microtubules MCQ
See the section of cilia / flagella showing the different parts In which of the following options all the four blanks A, B, C and D are correctly identified
A.
A - Plasma membrane, B - Interdoublet bridge, C - Hub, D – Arm
B.
A - Plasma membrane, B - Interdoublet bridge, C – Hub, D – Radial spoke
C.
A - Plasma membrane, B - Arm, C - Central microtubule, D – Radial spoke
D.
A - Plasma membrane, B - Interdoublet bridge, C - Central microtubule, D – Radial spoke
Q572 Errorless Centrosomes/Centriole Cilia, Flagella and Microtubules MCQ
The principal protein of cilia and flagella is
A.
Tubulin
B.
Albumin
C.
Globulin
D.
Gliadin
Q573 Errorless Nucleus and Chromosomes MCQ
In the given diagram I and II indicate
A.
Chromomere and chromonemata
B.
Centromere and secondary constriction
C.
Secondary constriction and satellite
D.
Telomere and satellite
Q574 Errorless Nucleus and Chromosomes MCQ
See the following figure and identify it [NCERT Pg. No. 101] B A C
A.
A-Metacentric chromosome, B-Submetacentric chromosome, C-Acrocentric chromosome, D-Telocentric chromosome
B.
A-Submetacentric chromosome, B-Metacentric chromosome, C-Telocentric chromosome, D-Acrocentric chromosome
C.
A-Acrocentric chromosome, B-Telocentric chromosome, C-Metacentric chromosome, D-Submetacentric chromosome
D.
A-Telocentric chromosome, B-Acrocentric chromosome, C-Submetacentric chromosome, D-Metacentric chromosome
Q575 Errorless Nucleus and Chromosomes MCQ
The given diagram shows a chromosome
A.
A-No. of centromeres – 1, B-No. of kinetochores – 2, C-No. of arms – 2
B.
A-No. of centromeres – 2, B-No. of kinetochores – 2, C-No. of arms – 4
C.
A-No. of centromeres – 1, B-No. of kinetochores – 2, C-No. of arms – 4
D.
A-No. of centromeres – 2, B-No. of kinetochores – 1, C-No. of arms – 4