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Cell_ The Unit Of Life

597 Questions Start Allen Test
All Exams Allen Errorless
Q526 Allen NCERT BASED QUESTIONS MCQ
Which type of solutes may move across plasma membrane from higher to lower concentration along concentration gradient without help of transmembrane proteins?
A.
Positively charged solutes
B.
Negatively charged solutes
C.
Neutral solutes
D.
Any of the above
Q527 Allen NCERT BASED QUESTIONS MCQ
Select out the wrong statement -
A.
Neutral solute can move according to concentration gradient across the nonpolar lipid bilayer
B.
Water can also move according to concentration gradient across the plasma membrane.
C.
Non polar molecules can not pass through non polar lipid bilayer
D.
Na $^{+}$ & K $^{+}$ can move across membrane through active transport
Q528 Allen NCERT BASED QUESTIONS MCQ
Which of the following is not a function of cell wall?
A.
Protection from mechanical damage and infection
B.
Cell to cell interaction
C.
Barrier to undesirable macromolecules
D.
Secretion
Q529 Allen NCERT BASED QUESTIONS MCQ
Which of the following components is not a constituent of algal cell wall?
A.
Cellulose
B.
Galactans
C.
Mannans
D.
Chitin
Q530 Allen NCERT BASED QUESTIONS MCQ
Endoplasmic reticulum helps in :-
A.
The transport of substances
B.
Synthesis of lipoproteins
C.
Synthesis of glycogen
D.
All of the above
Q531 Allen NCERT BASED QUESTIONS MCQ
Regarding to endoplasmic reticulum which of the following statements are wrong?
A.
ER divides the intra cellular space into two distinct compartments
B.
RER frequently observed in cells actively involved in secretion
C.
In animals steroidal hormones are synthesized in RER
D.
SER is the major site of lipid synthesis
Q532 Allen NCERT BASED QUESTIONS MCQ
Golgi complex receives proteins for modification from RER at which face?
A.
Cis face
B.
Trans face
C.
Concave face
D.
Maturing face
Q533 Allen NCERT BASED QUESTIONS MCQ
Classification of plastids into chloroplast, chromoplast and leucoplast is based on -
A.
Stored food
B.
Pigments
C.
Structure
D.
Size
Q534 Allen NCERT BASED QUESTIONS MCQ
Chloroplast of higher plants contains -
A.
Only chlorophyll
B.
Only carotenoids
C.
Both chlorophyll and carotenoids
D.
Phycobilin
Q535 Allen NCERT BASED QUESTIONS MCQ
Regarding to cilia and flagella which of the following statements is incorrect?
A.
Cilia is small and flagella is long
B.
Cilia can move either cell or surrounding fluid
C.
Flagella is responsible for movement of surrounding fluid
D.
Cilia work like oars
Q536 Allen NCERT BASED QUESTIONS MCQ
Plasma membrane covers the central core of the flagella and cilia this central core is known as -
A.
Bridge
B.
Axoneme
C.
Radial spoke
D.
Arms
Q537 Allen NCERT BASED QUESTIONS MCQ
Radial spokes of flagella helps in connection between-
A.
Peripheral triplets
B.
Central singlet microtubules
C.
Peripheral doublet and central sheath
D.
Two successive peripheral doublets
Q538 Allen NCERT BASED QUESTIONS Match the Columns
Match the following Column-I with Column-II
Column-IColumn-II
(a)Robert Brown
(b)Flemming
(c)Palade
(d)Camillo
(i)Ribonucleoprotein
(ii)Nucleus as cell organelle
(iii)Packaging materials
(iv)Staining of nucleus material
Q539 Allen NCERT BASED QUESTIONS MCQ
Classification of chromosomes is based on -
A.
the size of satellite
B.
Number of telomeres
C.
Position of centromere
D.
Position of secondary constriction
Q540 Allen NCERT BASED QUESTIONS MCQ
Chromosome with centromere slightly away from center is known as -
A.
Metacentric
B.
Submetacentric
C.
Acrocentric
D.
Telocentric
Q541 Allen NCERT BASED QUESTIONS MCQ
Find out the incorrect about secondary constriction -
A.
Non staining
B.
Constant position
C.
Known as satellite
D.
Present in some chromosomes
Q542 Allen NCERT BASED QUESTIONS Match the Columns
Match the column I and II and choose correct option :-
Column-I
Column-IColumn-II
(a)Plasma membrane
(b)Centriole
(c)Ribosomes
(d)Plastids
(e)Lysosome
(i)Helps in cell division of animal cells
(ii)Protein synthesis
(iii)Not present in animal cell
(iv)Rich in hydrolytic enzymes
(v)Barrier between cytoplasm and outer environment, in an animal cell.
A.
a - v, b - i, c- ii, d - iii, e- iv
B.
a - v, b - iii,c- ii,d - i, e - iv
C.
a - iv,b - iii,c- ii,d- i, e- v
D.
a - ii,b- iv, c-iii, d- i, e- v
Q543 Allen NCERT BASED QUESTIONS MCQ
Which of the following is not the function of cell wall? (i) Provides shape to the cell. (ii) Protects the cell from mechanical damage and infection. (iv) Provides barrier to undesirable macromolecules. (v) Helps in cell recognition
Q544 Allen NCERT BASED QUESTIONS MCQ
(A) Unicellular organisms are capable of independent existence.
(B) Cell is the fundamental structural and functional unit of all unicellular organisms only.
(C) All cells arise from pre-existing cells.
(D) The cytoplasm is the main arena of cellular activities of cells.
Options :-
A.
Statements A, C and D are correct
B.
Statements A, B and D are not correct
C.
Statements A, B and C are correct
D.
Statements B, C and D are not correct
Q545 Allen NCERT BASED QUESTIONS MCQ
Which one of the following statements is not correct for the vacuoles?
A.
Contractile vacuoles are helpful in excretion
B.
Food vacuoles are formed by engulfing the food particles
C.
Sap vacuole is bound by tonoplast
D.
Tonoplast facilitates the transport of ions against the concentration gradient into cytoplasm
Q546 Allen NCERT BASED QUESTIONS MCQ
Which one of the following statements is not correct for the vacules?
(A)Contractile vacules are helpful in excretion
(B) Single stranded circular DNA is present in matrix
(C) Protein synthesis occurs in Mitochondrial matrix
(D) Outer membrane is highly folded and form cristae
Options :-
A.
A, C and D only
B.
A, B and D only
C.
Only C
D.
A and D only
Q547 Allen ANALYTICAL QUESTIONS MCQ
Which of the following are correct for the cell which has naked ds circular DNA?
(a) Both 70S and 80S ribosomes
(b) Histone absent
(c) Compartmentalisation of cytoplasm absent
(d) Always diploid
A.
a and d
B.
b and c
C.
a and c
D.
b and d
Q548 Allen ANALYTICAL QUESTIONS MCQ
Which of the following is/are function(s) of Golgi complex?
(I) Modification of lipids and proteins
(II) Detoxification
(III) Formation of acrosome
(IV) Glycogen synthesis & breakdown
Choose the correct option ā€“
A.
I and II are incorrect
B.
I and III are correct
C.
II is incorrect and remaining are correct
D.
II and III are incorrect
Q549 Allen ANALYTICAL QUESTIONS MCQ
If living cells, similar to those found on earth, were found on another planet, where there was no oxygen, then which cell organelle would most probably be absent?
A.
Ribosomes
B.
Golgi apparatus
C.
Mitochondria
D.
Endoplasmic Reticulum
Q550 Allen ANALYTICAL QUESTIONS MCQ
Plant and prokaryotic cells are similar with each other but differ from animal cells:-
A.
In possessing 70 S ribosomes
B.
In possessing cell wall
C.
In possessing mitochondria
D.
In possessing chloroplasts