NEET MCQ- CLASS XI - CELL CYCLE AND CELL DIVISION [ PREVIOUS YEARS MCQ ]

SOLVE MCQS ONLINE - CLASS XI - CELL CYCLE AND CELL DIVISION [ PREVIOUS YEARS NEET MCQs]

Quiz

 

1. DURING MITOSIS ER AND NUCLEOLUS BEGINS TO DISAPPEAR AT
   1.   LATE PROPHASE
   2.   EARLY PROPHASE
   3.   LATE METAPHASE
   4.   EARLY PROPHASE
2. AT METAPHASE CHROMOSOMES ARE ATTACHED TO THE SPINDLE FIBRES BY THEIR
   1.   SATELLITES
   2.   SECONDARY CONSTRICTIONS
   3.   KINETOCHORES
   4.   CENTROMERES
3. DURING GAMETE FORMATION ENZYME RECOMBINASE PARTICIPATES DURING
   1.   METAPHASE-I
   2.   ANAPHASE-II
   3.   PROPHASE-I
   4.   PROPHASE-II
4. A COMPLEX FORMED BY PAIR OF SYNAPSED HOMOLOGOUS CHROMOSOME IS CALLED...
   1.   EQUATORIAL PLATE
   2.   KINETOCHORE
   3.   BIVALENT
   4.   AXONEME
5. THE ENZYME RECOMBINASE IS REQUIRED IN WHICH PHASE OF MEIOSIS...
   1.   PACHYTENE
   2.   DIPLOTENE
   3.   ZYGOTENE
   4.   DIAKINESIS
6. IN S PHASE OF CELL CYCLE
   1.   AMOUNT OF DNA DOUBLES IN EACH CELL
   2.   AMOUNT OF DNA REMAINS SAME
   3.   CHROMOSOME NUMBER IS INCREASED
   4.   AMOUNT OF DNA IS REDUCED TO HALF
7. DURING WHICH PHASE OF CELL CYCLE, THE AMOUNT OF DNA REMAINS AT 4C LEVEL IF THE INITIAL AMOUNT IS DENOTED AS 2C?
   1.   G0 AND G1
   2.   G1 AND S
   3.   ONLY G2
   4.   G2 AND M
8. ARRANGE THE FOLLOWING OF MEIOSIS IN CORRECT SEQUENCE ....
   A. CROSSING OVER B. SYNAPSIS C.TERMINALISATION OF CHIASMATA D. DISAPPEARANCE OF NUCLEOLUS
   1.   B, A, C, D
   2.   A, B, C, D
   3.   B, C, D, A
   4.   B, A, D, C
9. WHICH OF THE FOLLOWING IS NOT CHARACTERISTICS FEATURE DURING MEIOSIS IN SOMATIC CELLS?
   1.   SPINDLE FIBRES
   2.   DISAPPEARANCE OF NUCLEOLUS
   3.   CHROMOSOME MOVEMENT
   4.   SYNAPSIS
10. IN MEIOSIS CROSSING OVER IS INITIATED AT
    1.   PACHYTENE
    2.   DIPLOTENE
    3.   LEPTOTENE
    4.   ZYGOTENE
11. DNA REPLICATION IN BACTERIA OCCURS
    1.   WITHIN NUCLEOLUS
    2.   PRIOR TO FISSION
    3.   JUST BEFORE TRANSCRIPTION
    4.   DURING S PHASE
12. THE STAGE DURING WHICH SEPERATION OF PAIRED HOMOLOGOUS CHROMOSOMES BEGINS IS
    1.   PACHYTENE
    2.   DIAKINESIS
    3.   DIPLOTENE
    4.   ZYGOTENE
13. SELECT THE INCORRECT MATCH:
    1.   LAMPBRUSH CHROMOSOMES:- DIPLOTENE BIVALENT
    2.   SUBMETACENTRIC CHROMOSOME- L SHAPED CHROMOSOME
    3.   ALLOSOMES- SEX CHROMOSOMES
    4.   POLYTENE CHROMOSOMES- OOCYTES OF AMPHIBIANS
14. CELLS IN THE G0 PHASE
    1.   ENTER THE CELL CYCLE
    2.   SUSPEND THE CELL CYCLE
    3.   TERMINATE THE CELL CYCLE
    4.   EXIT THE CELL CYCLE
15. WHEN CELL HAS STALLED DNA REPLICATION FORK, WHICH CHECKPOINT SHOULD BE PREDOMINANTLY ACTIVATED?
    1.   G2/M
    2.   M
    3.   BOTH G2/M AND M
    4.   G1/S