NEET CONCEPT TEST -1 | BIOLOGY | STD 11 | GERL SYSTEM

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1. Glycosylation of proteins is majorly done by
( a ) Golgi apparatus ( b ) smooth endoplasmic reticulum
( c ) peroxisomes       ( d ) mitochondria .

2. All the digestive enzymes like carbohydrase , protease , lipase , DNase , RNase are found in
( a ) lysosome ( b ) peroxisome ( c ) glyoxysome ( d ) vacuole .

3. Acrosome of sperm is formed by
( a ) endoplasmic reticulum ( b ) mitochondria and ribosome
( c ) Golgi complex                  ( d ) centrioles and રિબોસોમ્સ

4. A cell is actively involved in steroid synthesis . It will have high amount of
( a ) RER       ( b ) SER         ( c ) both ( a ) and ( b )         ( d ) none of these .

5. The forming face of Golgi complex is towards
( a ) cell membrane
( b ) nucleus
( c ) cell membrane mostly but sometimes towards nucleus
( d ) towards the tubules .

6. Intake of solid substances in bulk by the cell is called
( a ) ephagy ( b ) exocytosis ( c ) phagocytosis ( d ) pinocytosis .

7. Lysosomes have acidic environment inside their vesicles due to
( a ) production of carboxylate ions inside it
( b ) production of phosphate ions inside it
( c ) high pH compared to outside
( d ) none of these

8. Golgi apparatus is absent in
( a ) most prokaryotic cells .          ( b ) mature RBCs of mammals
( c ) mature sieve tubes of plants ( d ) all of these .

9. Ribophorins are required for
( a ) synthesis of ribosomes in nucleolus ( b ) attachment of ribosomes over RER

( c ) attachment of ribosomal subunits    ( d ) attachment of ribosomes to mRNA .

10. When muscle cells are not activated , the Ca2 + are stored in
( a ) Golgi complex ( b ) mitochondria ( c ) RER ( d ) SER .

11. Detoxification of lipid soluble drugs and other harmful compounds , in endoplasmic reticulum is carried out by
( a ) cytochrome P450 ( b ) cytochrome bf
( c ) cytochromec         ( d ) cytochrome a , - az .

12. Important site for formation of glycoproteins and glycolipids is
( a ) vacuole ( b ) Golgi apparatus ( c ) plastid ( d ) lysosome .

13. Which of the following is not the function of lysosome ?
( a ) Disappearance of tail during the metamorphosis of the frog's tadpole .
( b ) Autolysis of the cellular contents .
( c ) Dissolution of the egg membrane during fertilisation .
( d ) Secretion of mucilage for the lubrication of root tip .

14. Zone of exclusion surrounds
( a ) Golgi apparatus ( b ) centriole ( c ) nucleus ( d ) lysosome .

15. Identify the components labelled A , B , C and D in the diagram below from the list ( i ) to ( viii ) given along with it .
( 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

The correct components are
           A       B      C        D
( a ) ( v )   ( iv ) ( viii ) ( iii )
( b ) ( i )    ( iv ) ( viii ) ( vi )
( c ) ( vi )   ( v ) ( iv )   ( vii )
( d ) ( v )    ( i )  ( iii )    ( ii ) .

16. The suicidal bags of the cell are
( a ) lysosomes ( b ) ribosomes ( c ) dictyosomes ( d ) phagosomes .

17. Which of the following statements regarding endoplasmic reticulum is not correct ?
( a ) Granular ER provides surface for protein synthesis .
( b ) New cell wall synthesis by secretion vesicles .
( c ) Tubules form reticular system alongwith the cisternae and vesicles .
( d ) Endoplasmic reticulum provides support to the colloidal protoplasm .

18. Identify the figure given and find the correct match of the

( a ) Golgi complex , A- cis face
( b ) ER , A - forming face
( c ) Golgi complex , A- trans face
( d ) ER , A - maturing face parts labelled .

19. Which of the following events does not occur in rough endoplasmic reticulum ?
( a ) Protein folding                      ( b ) Protein glycosylation
( c ) Cleavage of signal peptide ( d ) Phospholipid synthesis

20. Read the following statements carefully and find out the correct one .
A. ER form new nuclear membrane during cell division .
B. SER are basically concerned with synthesis of albumins in liver .
C. RER provide synthesis of protein and their transport in liver .
D. SER is involved in synthesis of glycogen in liver and testosterone in testes .
( a ) A , C and D are correct . ( b ) B , C and D are correct .
( c ) A , B and C are correct . ( d ) All are correct .

21. Some statements are given below about Golgi apparatus . Find out the correct statements .
A. The cisternae of Golgi apparatus are 0.5 um to 1.0 um in diameter .
B. In all Golgi apparatus , the number of cisternae are fixed .
C. Cis or forming face is towards nucleus and trans or maturing face is towards cell membrane .
D. Cis and trans faces are exactly similar and interconnected .
( a ) A and B are correct . ( b ) A and C are correct .
( c ) B and D are correct . ( d ) C and D are correct .

22. In ER , the materials synthesised are packed in the form of vesicle . What is the fate of these vesicles ? These are
( a ) transported out by process of exocytosis
( b ) fused with trans face of Golgi apparatus and move towards cis face
( c ) fused with cis face of Golgi apparatus and move towards trans face
( d ) digested by lysosomes .

23. Followings are some statements about lysosomes . Find the incorrect statement .
( a ) Lysosomes are formed by packing in Golgi apparatus .
( b ) Lysosome contains all types of hydrolytic enzymes .
( c ) The enzymes of lysosomes are active at acidic pH .
( d ) Formation of lysosome occurs due to budding off vesicles from RER .

24. The Golgi complex plays a major role
( a ) as energy transferring organelles
( b ) in post translational modification of proteins and glycosylation of lipids
( c ) in trapping the light and transforming it into chemical energy
( d ) in digesting proteins and carbohydrates .

25. Secondary lysosomes are also called
( a ) autophagic vacuoles ( b ) lipofuscin granules
( c ) residual body               ( d ) heterophagosomes .

ANSWER KEY

1. ( a ) 2. ( a ) 3. ( c ) 4 . ( b ) 5. ( b ) 6. ( c ) 7. ( d ) 8. ( d ) 9. ( b ) 10. ( d ) 11. ( a ) 12. ( b ) 13. ( d ) 14. ( a ) 15. ( a ) 16. ( a ) 17. ( b ) 18. ( a ) 19. ( d ) 20. ( a ) 21. ( b ) 22. ( c ) 23. ( d ) 24. ( b ) 25. ( d )

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