Which one of the following precedes reformation of the nuclear envelope during M-phase of the cell cycle?

1. Decondensation from chromosomes and reassembly of the nuclear lamina

2. Transcription from chromosomes and reassembly of the nuclear lamina

3. Formation of the contractile ring and formation of the phragmoplast

4. Formation of the contractile ring and transcription from chromosomes.

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 65%
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NEET 2023 - Target Batch - Aryan Raj Singh
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During mitosis ER and nucleolus begin to disappear at.

1. late prophase

2. early metaphase

3. late metaphase

4. early prophase

Subtopic:  Cell Cycle: Meiosis I |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Mitotic anaphase differs from metaphase in possessing.

1. same number of chromosomes and same number of chromatids

2. half number of chromosomes and half number of chromatids

3. half number of chromosomes and same number of chromatids

4. same number of chromosomes and half number of chromatids

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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NEET 2023 - Target Batch - Aryan Raj Singh
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If a diploid cell is treated with colchicine then it becomes.

1. triploid                         

2. tetraploid 

3. diploid                           

4. monoploid 

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 59%
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Best stage to observe shape, size and number of chromosomes is

1. interphase

2. metaphase

3. prophase

4. telophase

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 89%
From NCERT
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Synapsis occurs between

1. a male and a female gamete

2. mRNA and ribosomes

3. spindle fibres and centromere

4. two homologous chromosomes

Subtopic:  Cell Cycle: Meiosis I |
 90%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?

1. 21                       

2. 42                         

3. 63                   

4. 84

Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
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NEET 2023 - Target Batch - Aryan Raj Singh
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During cell division, the spindle fibres attach to the chromosomes at a region called

1. chromocentre

2. kinetochore

3. centriole

4. chromomere

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 93%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Bacterium divides every 35 minutes. If a culture containing 105 cells per mL is grown for 175 minutes, what will be the cell concentration per mL after 175 minutes?

1. 5 x 105 cells

2. 35 x 105 cells

3. 32 x 105 cells

4. 174 x 105 cells

Subtopic:  Intro to Cell Cycle & Interphase |
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NEET 2023 - Target Batch - Aryan Raj Singh
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A bivalent consists of 

1. two chromatids and one centromere

2. two chromatids and two centromeres

3. four chromatids and two centromeres

4. four chromatids and four centromeres

Subtopic:  Cell Cycle: Meiosis I |
 67%
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NEET 2023 - Target Batch - Aryan Raj Singh
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