1071 + Interview Questions in CELL IN GENERAL AWARENESS Page 2 InterviewSolution

51.	Ribosomes were discovered under E.M. byA. GolgiB. PorterC. de RobertisD. Palade
Answer» Correct Answer - D Ribosomes were first observed by Claude (1941), he called them as microsomes. Robinson and Brown (1950) noticed them in plant cells of bean roots and Palade (1955) detected them in animal cells and called these structures as ribosomes .

Discussion

52.	Read the given statements and identify the incorrect statement.A. Nucleus constrols cytoplasm functioning by sending out RNAsB. The term protoplasm was coined by HuxleyC. Nucleus was discovered by Robert Brown in orchid root cellsD. Nuclear membrane often possesses attached ribosomes
Answer» Correct Answer - B

Discussion

53.	Choose the incorrect matchA. Nucleus `-` RNAB. Lysosome `-` Protein synthesisC. Mitochondria `-` RespirationD. Cytoskeleton `-` Microtubules
Answer» Correct Answer - B

Discussion

54.	Choose the incorrect match.A. Active transport - `Na^(+)//K^(+)` ATPase.B. Flip-flop-movement of proteinC. Heteropycnosis-Differential stainingD. Alphoid DNA-centromere
Answer» Correct Answer - B

Discussion

55.	Fat storing granules areA. elaioplastB. amyloplastC. aleuplastD. none of these
Answer» Correct Answer - A leucoplasts are of three types Elaioplast they store fats. Amylopast they store carbohydrates. ltBrgt Aleuroplast they store proteins.

Discussion

56.	Fluid mosaic model of cell membrane was put forward byA. Danielli and DavsonB. Singer and NicolsonC. Garner and AllardD. Watson and Crick
Answer» Correct Answer - B Fluid mosaic model of plasma membrane was proposed by SJ Singer and GL Nicolson (1972) .

Discussion

57.	Select the incorrect statement from the following.A. both chloroplasts and mitochondria contain an inner and an outer membrane.B. Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane.C. Both chloroplasts and mitochondria contain DNAD. The chloropolasts are generally much larger than mitochondria
Answer» Correct Answer - B Thylakoid space is present only in chloroplasts. The inner membrane of mitochondria folded to form cristae.

Discussion

58.	Electron microscope has revealed the presence of or Which among the following can be seen only under electron microscopeA. RibosomesB. ChromosomesC. ChloroplastD. Leucoplast
Answer» Correct Answer - A Electron microscope has revealed the presence of ribosomes.

Discussion

59.	Electron microscope has revealed the presence of or Which among the following can be seen only under electron microscopeA. RibosomesB. LeucoplastsC. ChloroplastsD. Chromosomes
Answer» Correct Answer - A As compared to plastids and chromosomes, ribosomes are very small, having size ranging from 150-230Å. Thus, can be seen by only electron microscope.

Discussion

60.	Quantasomes are found inA. MitochondriaB. ChloroplastC. NucleusD. Lysosome
Answer» Correct Answer - B

Discussion

61.	Polysome is formed byA. several ribosomes attached to a single mRNAB. many ribosomes attached to a strand of endoplasmic reticulumC. a ribosome with several subunitsD. ribosomes attached to each other in a linear arrangement
Answer» Correct Answer - A

Discussion

62.	Mitochondria do not occur inA. Human liver cellB. Human nerve cellC. Human erythrocyteD. Frog liver cell
Answer» Correct Answer - C Mitochondria do not occur in human erythrocyte.

Discussion

63.	How do sperm lysosomes help in fertilization ?
Answer» By releaisng enzymes that dissolve egg membranes for sperm entry.

Discussion

64.	Where do most of the Krebs cycle enzymes occur in mitochondria ?
Answer» Correct Answer - In matrix.

Discussion

65.	Correlate the given featrues of animals cells (I-V) with their respective parts (A-N) I. Major site for synthesis of lipid. II. Powerhouse of the cells. III. Storehouse of digestive enzyme. IV. Site of glycolysis. V. Site for active ribosomal RNA synthesis.A. I-G,II-H-III-E,IV-F,V-DB. I-G,II-H,III-J,IV-F,V-DC. I-B,II-H,III-J,IV-F,V-DD. I-A,II-H,III-J,IV-F,V-D
Answer» Correct Answer - B

Discussion

66.	Select the incorrect match. A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.C. If Assertion is true but Reason is false.D. If both Assertion and Reason are false.
Answer» Correct Answer - D

Discussion

67.	Read the assertion and reason carefully to mark the correct option in question. Assertion: In eukaryotic cells, there is an extensive compartmentalisation of cytoplasm is seen Reason: Eukaryotic cells have membrane bound organelles.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. 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 both assertion and reason are false.
Answer» Correct Answer - A In eukaryotic cells there is an extensive compartmentalisation of cytoplasm is seen as eukaryotic cells have membrane bound organelles.

Discussion

68.	Select the wrong statement from the following :A. Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane.B. Both chloroplasts are generally much larger than mitochondriaC. The chloroplasts are generally much larger than mitochondriaD. Both chloroplasts and mitochondria contain an inner and an outer membrane
Answer» Correct Answer - A

Discussion

69.	Select the wrong statement from the followingA. Both chloroplasts and mitochondria contain an inner and an outer membraneB. Both chloroplasts and mitochondria have an internal compartment , the thylakoid space bounded by the thylakoid membraneC. Both chloroplasts and mitochondria contain DNAD. The chloroplasts are generally much larger than mitochondria
Answer» Correct Answer - B Thylakoid space which is known as lumen is present only in chloroplasts The inner membrane of mitochondiia is folded to fo rm crista e

Discussion

70.	Select the wrong statement .A. Bacterial cell wall is made up of peptidoglycanB. Pill and fimbriae are mainly involved in motility of bacterial cellsC. Cyanobacteria lack flagellated cellsD. Mycoplasma is a wall-less microorganism
Answer» Correct Answer - B Fimbriae or pili are fine hair like appendages used by bacteria for attachment rather than motility. Pili are longer than fimbriae and are one or two per cells. Some special type of pili called sex pili are present in certain strains of bacteria which help the bacterium for forming conjugation canal during sexual reproduction by conjugation method. Firnbriae also help bacterium for cell to cell adhering and colonisation.

Discussion

71.	Which is wrong?A. Both chloroplast and mitochondria have an internal compartment or thylakoid space bounded by thylakoid membrane.B. Both contain DNAC. Chloroplast is generally larger.D. Both are covered by double membrane.
Answer» Correct Answer - A Only chloroplast have an internal compartment or thylakoid space bounded by thylakoid membrane.

Discussion

72.	Read the assertion and reason carefully to mark the correct option in question.Assertion: Nuclear matrix or nucleoplasm contains one or more cylindrical structures called nucleolus. Reaon: Smaller and more numerous nucleoli are present in cells actively carrying out protein synthesis.A. If both assertion and reason are true and the reason is the correct explanation of the assertionB. 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 both assertion and reason are false.
Answer» Correct Answer - D * Nucleus matrix or nucleoplasm contains one or more spherical structures called nucleolus. * Larger and more numerous nucleoli are present in cells actively carrying out protein synthesis.

Discussion

73.	Which of the following statements regarding mitochondrial membrane is not correctA. Outer membrane resembles a sieve.B. Outer membrane is permeable to all kinds of molecules.C. Enzymes of electron transport chain are embedded in outer membrane.D. Inner membrane is highly convoluted forming a series of infoldings.
Answer» Correct Answer - C Enzymes of electron transport chain are embedded in inner membrane.

Discussion

74.	Sequences of which of the following is used to know the phylogeny? (a) mRNA (b) rRNA (c) tRNA(d) Hn RNA
Answer» Correct Answer is: (b) rRNA

Discussion

75.	The two subunits of ribosomes remain united at critical ion level of …………… . (a) Magnesium (b) Calcium (c) Sodium (d) Ferrous
Answer» (a) Magnesium

Discussion

76.	Write two subunits of 70S ribosome / 80S ribosome.
Answer» Subunits of 70s ribosome are 50s and 30s. Subunits of 80s ribosome are 60s and 40s.

Discussion

77.	The rRNAs of 80S ribosomes of larger subunit areA. 18SB. 23S +5SC. 28S +5.8S +5SD. 16S
Answer» Correct Answer - C

Discussion

78.	Mention the two subunits of 80S ribosomes.
Answer» Correct Answer - 60S and 40S

Discussion

79.	Which one of the following is the correct defination of osmosis ?A. Movement of solute molecules from lower concentration to higher concentration through a semipermeable membraneB. Movement of water molecules from a region of its higher concentration to a region of lower concentration through a semipermeable membraneC. Movement of solvent molecules through a permeable membraneD. Movement of solutions through a semipermeable membrane
Answer» Correct Answer - B

Discussion

80.	Osmosis is a type ofA. Imbibition of solutionB. Diffusion of solventC. Evaporation of waterD. Diffusion of solute
Answer» Correct Answer - B

Discussion

81.	Oxysomes are submicroscopic particles present on theA. surface of the inner membrane of mitochondrionB. thylakoid membrane of chloroplastsC. outer membrane of mitochondrionD. rough endoplasmic reticulum
Answer» Correct Answer - A

Discussion

82.	Assertion. The viruses are not considered organisms. Reason. Viruses are merely nucleoprotein particles and lack cytoplasm and metabolic machinery.A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.C. If Assertion is true but Reason is false.D. If both Assertion and Reason are false.
Answer» Correct Answer - A

Discussion

83.	The radiatingthreads or rays developed by centriole during cell division constituteA. asterB. filamentsC. flagellaD. hooks
Answer» Correct Answer - A

Discussion

84.	The centriole is associated withA. DNA synthesisB. spindle formationC. reproductionD. respiration
Answer» Correct Answer - B

Discussion

85.	What are palade particles ?
Answer» Another name for ribosomes

Discussion

86.	What is Osmosis?
Answer» Osmosis is the passage of water or any solvent from a region of its lower concentration to a higher concentration through a semi permeable membrane.

Discussion

87.	Which of the following organelle is related with photorespiration?A. PeroxisomeB. NucleusC. Cell wallD. Lysosome
Answer» Correct Answer - A

Discussion

88.	Smallest living organism isA. VirusB. BacteriaC. MycoplasmaD. Fungi
Answer» Correct Answer - C Smallest living organisms is mycoplasma.

Discussion

89.	Which of the following is correct about centriole?A. It is found is all eukaryotesB. It is microflamentousC. It is important for mitosisD. It is made up of solid protein rod
Answer» Correct Answer - C Centriole is important for mitosis.

Discussion

90.	If the organisation of cell is destroyed due to physical and chemical influence, what will happen?
Answer» If the organisation of cell is destroyed due to physical and chemical influence, the cell will die. Sometimes it also effects the functions of other cells nearby.

Discussion

91.	What happen to the cell if nucleus is removed? Give two reasons to support your answer.
Answer» If nucleus is removed from a cell, there would be no control on the functions of a cell. Cells are not involved in the process of cell division. The cell will not live for more time. E.g : Red blood cells, not having nucleus live less time than the other cells, which are having nucleus.

Discussion

92.	What would happen to the life of cell if there was no golgi complex?
Answer» The golgi apparatus packed various substances before they are transported to other parts of the cell. If there was no golgi complex in the cell the proteins and other substances are not altered and packed. Substances transport will not occur. Regeneration or repair of the membrane will not takes place.

Discussion

93.	When a cell of diameter 2 `mu` grows to double its diameter, what will happen to its surface area volume relationship ?A. It will reduce to halfB. It will remain the sameC. It cannot be determinedD. It will double
Answer» Correct Answer - A

Discussion

94.	Wooden doors fit very tightly in rainy season. Why does it happen?
Answer» During rainy season there is more humidity in air. The doors get soaked in rain water. Though wood is non-living, it has the ability to absorb water. As the moisture is more in the surrounding area, it enters the wood. This is a type of endosmosis. It causes the doors to swell. The swollen doors then fit very tightly

Discussion

95.	“A cell is a building unit of an organism”. Do you agree with this statement? If yes, explain why.
Answer» I agree with the above statement. A cell is a building unit of an organism because it is responsible for building the entire body of an organism.

95.

“A cell is a building unit of an organism”. Do you agree with this statement? If yes, explain why.

Answer»

I agree with the above statement.

A cell is a building unit of an organism because it is responsible for building the entire body of an organism.

Discussion

96.	Smallest cell organelle discovered by Palade (1953) isA. LysosomeB. RibosomeC. SphaerosomeD. Dictyosome
Answer» Correct Answer - B Smallest cell organelle discovered by Palade (1953) is ribosome.

Discussion

97.	What is Protoplasm? Who coined this term and when?
Answer» a) The living fluid substance of the cell is called “Protoplasm” b) Purkinje in 1839 coined the term protoplasm.

97.

What is Protoplasm? Who coined this term and when?

Answer»

a) The living fluid substance of the cell is called “Protoplasm”

b) Purkinje in 1839 coined the term protoplasm.

Discussion

98.	What will happen to the size of the cell if it is placed in such solutions which vary in their concentrations.a) When placed in Hypotonic solution?b) When placed in Isotonic solution?
Answer» a) When a cell is placed in Hypotonic solution (dilute solution), water enters into the cell. Hence the cell swells up. b) When a cell is placed in Isotonic solution (same concentration), there is no movement of water. Hence the cell will stay the same size.

98.

What will happen to the size of the cell if it is placed in such solutions which vary in their concentrations.a) When placed in Hypotonic solution?b) When placed in Isotonic solution?

Answer»

a) When a cell is placed in Hypotonic solution (dilute solution), water enters into the cell. Hence the cell swells up.

b) When a cell is placed in Isotonic solution (same concentration), there is no movement of water. Hence the cell will stay the same size.

Discussion

99.	Name the smallest and largest known cells in this world?
Answer» a) The smallest known cells is pneumonea cell. It is about 0.1 m in diameter. b) An Ostrich egg cell is the largest known cell. It is 170 x 135 mm approximately.

99.

Name the smallest and largest known cells in this world?

Answer»

a) The smallest known cells is pneumonea cell. It is about 0.1 m in diameter.

b) An Ostrich egg cell is the largest known cell. It is 170 x 135 mm approximately.

Discussion

100.	What are gram positive and gram negative bacteria?
Answer» When bacterias are stained, few take up the gram stain and are called gram positive, others which do not are called gram negative.

Discussion

Explore topic-wise InterviewSolutions in .

Ribosomes were discovered under E.M. byA. GolgiB. PorterC. de RobertisD. Palade

Read the given statements and identify the incorrect statement.A. Nucleus constrols cytoplasm functioning by sending out RNAsB. The term protoplasm was coined by HuxleyC. Nucleus was discovered by Robert Brown in orchid root cellsD. Nuclear membrane often possesses attached ribosomes

Choose the incorrect matchA. Nucleus `-` RNAB. Lysosome `-` Protein synthesisC. Mitochondria `-` RespirationD. Cytoskeleton `-` Microtubules

Choose the incorrect match.A. Active transport - `Na^(+)//K^(+)` ATPase.B. Flip-flop-movement of proteinC. Heteropycnosis-Differential stainingD. Alphoid DNA-centromere

Fat storing granules areA. elaioplastB. amyloplastC. aleuplastD. none of these

Fluid mosaic model of cell membrane was put forward byA. Danielli and DavsonB. Singer and NicolsonC. Garner and AllardD. Watson and Crick

Electron microscope has revealed the presence of or Which among the following can be seen only under electron microscopeA. RibosomesB. ChromosomesC. ChloroplastD. Leucoplast

Electron microscope has revealed the presence of or Which among the following can be seen only under electron microscopeA. RibosomesB. LeucoplastsC. ChloroplastsD. Chromosomes

Quantasomes are found inA. MitochondriaB. ChloroplastC. NucleusD. Lysosome

Polysome is formed byA. several ribosomes attached to a single mRNAB. many ribosomes attached to a strand of endoplasmic reticulumC. a ribosome with several subunitsD. ribosomes attached to each other in a linear arrangement

Mitochondria do not occur inA. Human liver cellB. Human nerve cellC. Human erythrocyteD. Frog liver cell

How do sperm lysosomes help in fertilization ?

Where do most of the Krebs cycle enzymes occur in mitochondria ?

Select the wrong statement .A. Bacterial cell wall is made up of peptidoglycanB. Pill and fimbriae are mainly involved in motility of bacterial cellsC. Cyanobacteria lack flagellated cellsD. Mycoplasma is a wall-less microorganism

Which is wrong?A. Both chloroplast and mitochondria have an internal compartment or thylakoid space bounded by thylakoid membrane.B. Both contain DNAC. Chloroplast is generally larger.D. Both are covered by double membrane.

Sequences of which of the following is used to know the phylogeny? (a) mRNA (b) rRNA (c) tRNA(d) Hn RNA

The two subunits of ribosomes remain united at critical ion level of …………… . (a) Magnesium (b) Calcium (c) Sodium (d) Ferrous

Write two subunits of 70S ribosome / 80S ribosome.

The rRNAs of 80S ribosomes of larger subunit areA. 18SB. 23S +5SC. 28S +5.8S +5SD. 16S

Mention the two subunits of 80S ribosomes.

Osmosis is a type ofA. Imbibition of solutionB. Diffusion of solventC. Evaporation of waterD. Diffusion of solute

Oxysomes are submicroscopic particles present on theA. surface of the inner membrane of mitochondrionB. thylakoid membrane of chloroplastsC. outer membrane of mitochondrionD. rough endoplasmic reticulum

The radiatingthreads or rays developed by centriole during cell division constituteA. asterB. filamentsC. flagellaD. hooks

The centriole is associated withA. DNA synthesisB. spindle formationC. reproductionD. respiration

What are palade particles ?

What is Osmosis?

Which of the following organelle is related with photorespiration?A. PeroxisomeB. NucleusC. Cell wallD. Lysosome

Smallest living organism isA. VirusB. BacteriaC. MycoplasmaD. Fungi

Which of the following is correct about centriole?A. It is found is all eukaryotesB. It is microflamentousC. It is important for mitosisD. It is made up of solid protein rod

If the organisation of cell is destroyed due to physical and chemical influence, what will happen?

What happen to the cell if nucleus is removed? Give two reasons to support your answer.

What would happen to the life of cell if there was no golgi complex?

When a cell of diameter 2 `mu` grows to double its diameter, what will happen to its surface area volume relationship ?A. It will reduce to halfB. It will remain the sameC. It cannot be determinedD. It will double

Wooden doors fit very tightly in rainy season. Why does it happen?

“A cell is a building unit of an organism”. Do you agree with this statement? If yes, explain why.

Smallest cell organelle discovered by Palade (1953) isA. LysosomeB. RibosomeC. SphaerosomeD. Dictyosome

What is Protoplasm? Who coined this term and when?

What will happen to the size of the cell if it is placed in such solutions which vary in their concentrations.a) When placed in Hypotonic solution?b) When placed in Isotonic solution?

Name the smallest and largest known cells in this world?

What are gram positive and gram negative bacteria?