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Cell_ The Unit Of Life

597 Questions Start Allen Test
All Exams Allen Errorless
Q476 Allen PYQ MCQ
Which of the following statements regarding mitochondria is incorrect?
A.
Outer membrane is permeable to monomers of carbohydrates, fats and proteins.
B.
Enzymes of electron transport are embedded in outer membrane.
C.
Inner membrane is convoluted with infoldings.
D.
Mitochondrial matrix contains single circular DNA molecule and ribosomes.
Q477 Allen PYQ MCQ
Which of the following cell organelles is present in the highest number in secretory cells?
A.
Mitochondria
B.
Golgi complex
C.
Endoplasmic reticulum
D.
Lysosomes
Q478 Allen PYQ MCQ
Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of:-
A.
Protein synthesis
B.
mRNA
C.
rRNA
D.
tRNA
Q479 Allen PYQ Match the Columns
Match the Column-I with Column-II :-
Column-IColumn-II
(a)Golgi apparatus s of protein
(b)Lysosomes
(c)Vacuoles
(d)Ribosomes
(i)Synthesis of protein
(ii)Trap waste and excretory products
(iii)Formation of glycoproteins and glycolipids
(iv)Digesting biomolecules
A.
(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
B.
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
C.
(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
D.
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
Q480 Allen PYQ MCQ
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells:
A.
Polysomes
B.
Endoplasmic reticulum
C.
Peroxisomes
D.
Golgi bodies
Q481 Allen PYQ MCQ
The organelles that are included in the endomembrane system are:
A.
Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
B.
Endoplasmic reticulum, Golgi complex, Lysosomes and Vacuoles
C.
Golgi complex, Mitochondria, Ribosomes and Lysosomes
D.
Golgi complex, Endoplasmic reticulum, Mitochondria and Lysosomes
Q482 Allen PYQ MCQ
When the centromere is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:
A.
Metacentric
B.
Telocentric
C.
Sub-metacentric
D.
Acrocentric
Q483 Allen PYQ Match the Columns
Match Column -I with Column - II.
Column-IColumn-II
(a)Cristae
(b)Thylakoids
(c)Centromere
(d)Cisternae
(i)Primary constriction in chromosome
(ii)Disc-shaped sacs in Golgi apparatus
(iii)Infoldings in mitochondria
(iv)Flattened membranous sacs in stroma of plastids
A.
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
B.
(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
C.
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
D.
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
Q484 Allen PYQ MCQ
Which of the following is an incorrect statement?
A.
Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
B.
Microbodies are present both in plant and animal cells.
C.
The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
D.
Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
Q485 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)Metacentric
(b)Acrocentric chromosome
(c)Sub-metacentric
(d)Telocentric chromosome
(i)Centromere situated close to the end forming one extremely short and one very long arms
(ii)Centromere at the terminal end
(iii)Centromere in the middle forming two equal arms of chromosomes
(iv)Centromere slightly away from the middle forming one shorter arm and one longer arm
A.
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
B.
(a)-(ii),(b)-(iii), (c)-(iv), (d)-(i)
C.
(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
D.
(a)-(iii),(b)-(i), (c)-(iv), (d)-(ii)
Q486 Allen PYQ MCQ
Which of the following statements with respect to Endoplasmic Reticulum is incorrect?
A.
SER is devoid of ribosomes
B.
In prokaryotes only RER are present
C.
SER are the sites for lipid synthesis
D.
RER has ribosomes attached to ER
Q487 Allen PYQ MCQ
Which type of substance would face difficulty to pass through the cell membrane?
A.
Substance with hydrophobic moiety
B.
Substance with hydrophilic moiety
C.
All substance irrespective of hydrophobic and hydrophilic moiety
D.
Substance soluble in lipids
Q488 Allen PYQ MCQ
If the pH in lysosomes is increased to alkaline, what will be the outcome?
A.
Hydrolytic enzymes will function more efficiently
B.
Hydrolytic enzymes will become inactive
C.
Lysosomal enzymes will be released into the cytoplasm
D.
Lysosomal enzymes will be more active
Q489 Allen PYQ MCQ
Which of the following are NOT considered as the part of endomembrane system?
(A) Mitochondria
(B) Endoplasmic Reticulum
(C) Chloroplasts
(D) Golgi complex
(E) Peroxisomes
A.
A, C and E only
B.
A and D only
C.
A, D and E only
D.
B and D only
Q490 Allen PYQ MCQ
Which of the following functions is carried out by cytoskeleton in a cell?
A.
Protein synthesis
B.
Motility
C.
Transportation
D.
Nuclear division
Q491 Allen PYQ MCQ
Given below are two statements: Statement I : In bacteria, the mesosomes are formed by the extensions of plasma membrane. Statement II : The mesosomes, in bacteria, help in DNA replication and cell wall formation. In the light of the above statements, choose the most appropriate answer from the options given below:
A.
Statement I is correct but Statement II is incorrect.
B.
Statement I is incorrect but Statement II is correct.
C.
Both Statement I and Statement II are correct.
D.
Both Statement I and Statement II are incorrect.
Q492 Allen PYQ MCQ
Which of the following statements are correct with respect of Golgi apparatus?
(A) It is the important site of formation of glycoprotein and glycolipids.
(B) It produces cellular energy in the form of ATP.
(C) It modifies the protein synthesized by ribosomes on ER.
(D) It facilitates the transport of ions.
(E) It provides mechanical support.
A.
(B) and (C) only
B.
(A) and (C) only
C.
(A) and (D) only
D.
(D) and (E) only
Q493 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)Nucleolus
(b)Centriole
(c)Leucoplasts
(d)Golgi apparatus
(i)Site of formation of glycolipid
(ii)Organization like the cartwheel
(iii)Site for active ribosomal RNA synthesis
(iv)For storing nutrients
A.
a-iii, b-ii, c-iv, d-i
B.
a-ii, b-iii, c-i, d-iv
C.
a-iii, b-iv, c-II, d-i
D.
a-i, b-ii, c-iii, d-iv
Q494 Allen PYQ MCQ
The DNA present in chloroplast is :
A.
Linear, double stranded
B.
Circular, double stranded
C.
Linear, single stranded
D.
Circular, single stranded
Q495 Allen PYQ Match the Columns
Match List I with List-II :
Column-IColumn-II
(a)Axoneme
(b)Cartwheel pattern
(c)Crista
(d)Satellite
(i)Centriole
(ii)Cilia and flagella
(iii)Chromosome
(iv)Mitochondria
A.
a-iv, b-iii, c-ii, d-i
B.
a-iv, b-ii, c-iii, d-i
C.
a-ii, b-iv, c-i, d-iii
D.
a-ii, b-i, c-iv, d-iii
Q496 Allen PYQ MCQ
Given below are two statements: Statement-I : Mitochondria and chloroplasts are both double membrane bound organelles. Statement-II : Inner membrane of mitochondria is relatively less permeable, as compared to chloroplast. In the light of the above statement, choose the most appropriate 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.
Q497 Allen PYQ Match the Columns
Match List-I with List-II :
Column-IColumn-II
(a)Flemming
(b)Robert Brown
(c)George Palade
(d)Camillo Golgi
(i)Disc shaped sac or cisternae near cell nucleus
(ii)Chromatin
(iii)Ribosomes
(iv)Nucleus
A.
a-ii, b-iv, c-iii, d-i
B.
a-ii, b-iii, c-i, d-iv
C.
a-i, b-ii, c-iii, d-iv
D.
a-iv, b-ii, c-iii, d-i
Q498 Allen PYQ Match the Columns
Match Column-I with Column-II :
Column-IColumn-II
(a)Metacentric chromosome
(b)Sub-metacentric chromosome
(c)Acrocentric chromosome
(d)Telocentric chromosome
(i)Chromosome has a terminal centromere
(ii)Middle centromere forming two equal arms of chromosome
(iii)Centromere is slightly away from the middle of chromosome resulting into two unequal arms
(iv)Centromere is situated close to its end forming one extremely short and one very long arm
A.
a-ii, b-i, c-iv, d-iii
B.
a-iv, b-i, c-ii, d-iii
C.
a-i, b-ii, c-iii, d-iv
D.
a-ii, b-iii, c-iv, d-i
Q499 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)F₁ Particles
(b)Histones
(c)Axoneme
(d)Cisternae
(i)Chromosomes
(ii)Cilia
(iii)Golgi apparatus
(iv)Mitochondria
A.
a-ii, b-i, c-iv, d-iii
B.
a-iv, b-i, c-ii, d-iii
C.
a-iv, b-i, c-iii, d-ii
D.
a-iv, b-iii, c-i, d-ii
Q500 Allen NCERT BASED QUESTIONS MCQ
The figure given below shows the structure of plasma membrane, with its parts labelled from A to E, Identify the correct :-
A.
A → 52 percent of erythrocyte membrane
B.
B and E → Movement of these can be measured as fluidity of membrane
C.
C → Help in facilitated transport of polar molecules
D.
D → Its polar tail contains saturated hydrocarbons