we are going to cover Cell the Unit of Life NEET Questions and Answers pdf download.
MCQ on Cell Biology PDF | Cell Organelles Multiple Choice Questions and Answers
1. A cell biologist used ultrasonic method to disrupt the cell and found fragments in a cell organelle which served as site of ATP synthesis . These fragments actually are the parts of
( a ) mitochondria
( b ) lysosomes
( c ) liposomes
( d ) ribosomes
Ans. a
2. In which cell organelle nucleic acid is not present ?
( a ) Chloroplast
( b ) Mitochondria
( c ) Golgi apparatus
( d ) Ribosome
Ans. c
3. The term ‘ power house ‘ is applicable to a class of cell organelle called
( a ) Golgi apparatus
( b ) mitochondria
( c ) microsomes
( d ) peroxisomes
Ans. b
4. Elastic nature of plasma membrane is due to the presence of
( a ) lipids
( b ) proteins
( c ) carbohydrates
( d ) water
Ans. a
5. As they release hydrolase that digest old and damaged cells , the term ‘ suicidal bags ‘ is used by cells biologists for the
( a ) Golgi bodies
( b ) lysosomes
( c ) glyoxysomes
( d ) peroxisomes
Ans. b
6. Which organelle help in the synthesis of lipids , cholesterol , steroids and visual pigments in epithelial cells of retina ?
( a ) Golgi bodies
( b ) RER
( c ) SER
( d ) All of these
Ans. c
7. Which of the following observations most strongly support the view that mitochondria contains electron transport enzymes that are aggregated into compact association ?
( a ) Mitochondria have a highly folded inner wall
( b ) Disruption of mitochondria yields membrane fragmentation which are able to synthesise ATP
( c ) Mitochondria in animal embryos have a tendency to concentrate in cells , which are able to become locomotory structures
( d ) A contractile protein capable of utilising ATP has been obtained from the mitochondria
Ans. b
8. Nucleolus was discovered by
( a ) Robert Hooke
( b ) Robert Brown
( c ) Robert Koch
( d ) Robert Dixon
Ans. b
Cell Biology mcq with answers pdf | Cell the unit of life mcq for neet pdf
9. A structure found traversing most of the cells , discovered by Porter , Claude and Fullman in 1945 is the
( a ) Golgi apparatus
( b ) mitochondria
( c ) endoplasmic reticulum
( d ) lysosomes
Ans. c
10. The organelles , which are responsible for almost all molecular oxygen uptake of the cell as well as 90 % of the ATP formed are
( a ) mitochondria
( b ) chloroplasts
( c ) lysosomes
( d ) Golgi bodies
Ans. a
11. Which cell structure , sub – structure acts as the site of oxidation – reduction reaction ?
( a ) Glyoxysomes
( b ) Mitochondrial cristae
( c ) Lysosomes
( d ) Coated vesicles in Golgi complex
Ans. b
12. Which organelle of the plant cell does not contain functional DNA ?
( a ) Nucleus
( b ) Chloroplast
( c ) Mitochondria
( d ) Peroxisome
Ans. d
13. Robert Hooke used the term cell in the year
( a ) 1665
( b ) 1885
( c ) 1865
( d ) 1960
Ans. a integral
14. The secondary structure of that portion of an integral protein that is buried in the lipid bilayer of a cell membrane is
( a ) Beta – band
( b ) Alpha – helix
( c ) Beta – strand
( d ) random coil
Ans. b
15. A human egg is nearly a million times as large as human sperm . Most of this size difference is due to the difference in their
( a ) cytoplasmic content
( b ) nucleus
( c ) Both ( a ) and ( b )
( d ) mitochondria
Ans. a
16. Cell recognition and adhesion are facilitated by the components of plasma membrane . These components are generally
( a ) protein molecules alone
( b ) lipids alone
( c ) Both ( a ) and ( b )
( d ) glycolipids and glycoproteins
Ans. d
17. According to fluid mosaic model , plasma membrane is composed of
( a ) cellulose and hemicellulose
( b ) phospholipid , intrinsic and extrinsic protein
( c ) phospholipid and intrinsic protein
( d ) phospholipid and hemicellulose
Ans. b
Cell cycle and cell division neet questions pdf | Cell cycle and cell division mcq for neet pdf
18. Organelle which is responsible for the origin of lysosome is
( a ) ER
( b ) chloroplast
( c ) Golgi body
( d ) ribosome
Ans. c
19. Continuity of cytoplasm from cell to cell is maintained through cytoplasmic connections in plants called
( a ) ER
( b ) tight junction
( c ) gap junction
( d ) plasmodesmata
Ans. d
20. Lysosomes contain a rich repertoire of
( a ) hydrolases
( b ) isomerases
( c ) transferases
( d ) oxidoreductases
Ans. a
21. Smooth endoplasmic reticulum is well developed in the cells which synthesises
( a ) steroids
( b ) proteins
( c ) carbohydrates
( d ) All of these
Ans. a
22. The detoxification reaction occurs in which site of liver
( a ) free ribosome
( b ) RER
( c ) SER
( d ) hydrophobic interaction
Ans. c
23. Nuclear pores in the nucleus is formed by the
( a ) fusion of nuclear membranes
( b ) absence of nuclear membrane
( c ) movement of cytoplasm through nuclear membrane
( d ) breakage of nuclear membrane
Ans. a
24. A cellular component in bacteria resembling eukaryotic cell is
( a ) cell wall
( b ) plasma membrane
( c ) ribosomes
( d ) nucleus
Ans. b
cell the unit of life mcq for neet pdf download | mcq on chromosome structure | mcq on polytene chromosome
25. Cell theory is not applicable to
( a ) bacteria
( b ) fungi
( c ) algae
( d ) viruses
Ans. d
26. Membrane covering vacuoles in plant cell is
( a ) tonoplasm
( b ) cell membrane
( c ) cell wall
( d ) tonoplast
Ans. d
27. Organelle found in secretory cells in large amount is
( a ) chloroplast
( b ) lysosome
( c ) mitochondria
( d ) vacuole
Ans. a
28. Diagrammatic representation of karyotype ( morphological representation of chromosomes ) of a species is called
( a ) choloroplast
( b ) cladograrn
( c ) golgi apparatus
( d ) ecogram
Ans. c
29. At which phase , size of chromosome is measured ?
( a ) Metaphase
( b ) Anaphase
( c ) Prophase
( d ) All of these
Ans. a
30. Term chromosome was coined by
( a ) Sutton
( b ) W Flemming
( c ) W Roux
( d ) Waldeyer
Ans. d
31. Cell theory states that
( a ) all cells have nuclei
( b ) all cells are living
( c ) cells reproduces by both mitosis and meiosis
( d ) cells are fundamental structural units of plants and animals
Ans. d
32. Organelle responsible for converting food into energy is
( a ) nucleus
( b ) nucleolus
( c ) chloroplast
( d ) mitochondria
Ans. d
multiple choice questions on chromosomal aberrations | cell structure and function mcq with answers pdf | mcq on cell organelles with answers pdf
33. Plasma membrane is composed of
( a ) proteins
( b ) lipids
( c ) cellulose
( d ) Both ( a ) and ( b )
Ans. d
34. The sedimentation coefficient of ribosomes is generally 70s . It breaks up into two subunits whose sedimentation constants are
( a ) 50 S and 205
( b ) 40 S and 30 S
( c ) 60 S and 10S
( d ) 50 S and 30 S
Ans. d
35. Middle lamella of cell wall is mainly composed of
( a ) hemicellulose
( b ) protein
( c ) carbohydrate
( d ) calcium pectate action
Ans. d
36. Keeping in view about the fluid mosaic model for the structure of cell membrane , which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other ( described as flip flop movement ) ?
( a ) Neither lipids , nor proteins can flip flop
( b ) Both lipids and proteins can flip flop
( c ) While lipids can rarely flip flop , proteins cannot
( d ) While proteins can rarely flip flop , lipids cannot
Ans. c
37. Which of the following is not a constituent of cell membrane ?
( a ) Proline
( b ) Phospholipid
( c ) Glycolipid
( d ) Cholesterol
Ans. c
38. Cell structure that along with the micro tubule forms the mitotic spindle
( a ) cilia
( b ) centrioles
( c ) chromatin
( d ) nucleolus
Ans. b
39. Analyse the molecule that helps to add stability to the bilayer of the plasma membrane
( a ) glycoprotein
( b ) cholesterol
( c ) glycolipid
( d ) oligosaccharides
Ans. b
40. Cell structure that acts as the site of ribosomal RNA is
( a ) cilia
( b ) centrioles
( c ) chromatin
( d ) nucleolus
Ans. d
41. Which structure of a cell serves as the site of modification , packaging and preparation for the distribution of newly formed protenis ?
( a ) Golgi complex
( b ) Mitochondria
( c ) Nucleus
( d ) Ribosomes
Ans. a
42. Which of the following types of protein is synthesised in bound ribosomes ?
( a ) Enzyme
( b ) Haemoglobin
( c ) Insulin
( d ) Chromosome
Ans. c
43. Which out of these has the ability to detoxing of poisons such as amphetamines , barbiturates , morphine and some pesticides in liver ?
( a ) Rough endoplasmic reticulum
( b ) Smooth endoplasmic reticulum
( c ) Golgi apparatus
( d ) Lysosome
Ans. b
44. What is / are the functions of cell ?
( a ) It helps to provide structure to the body
( b ) It takes in nutrients from food
( c ) It helps in conversion of nutrients into energy
( d ) All of the above
Ans. d
Related Queries: