Prepare for NEET Biology Cell Cycle and Cell Division with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert help for mitosis and meiosis understanding.
Identify the correct statement regarding (Gap 1) phase of interphase.
DNA replication takes place.
Chromosomes duplicate.
The cell is metabolically inactive.
The cell is metabolically active and RNA and proteins are synthesized.
During the phase of the cell cycle, which of the following occurs?
DNA replication begins.
Chromosomes condense.
The cell grows and synthesizes proteins.
Spindle fibers begin to form.
Which statement BEST describes the cellular activity during the phase of interphase?
DNA replication is initiated.
The cell is actively growing and carrying out metabolic functions.
The cell is in a dormant or resting state.
Chromosomes begin to condense in preparation for cell division.
In the cell cycle, the phase is characterized by:
Cell growth and preparation for DNA replication.
DNA replication.
Chromosome duplication.
Cell division.
If a cell is actively synthesizing proteins and increasing in size, but DNA replication has not yet begun, which phase of the cell cycle is it MOST likely in?
S
G2
G1
M
During which phase of meiosis does the centromere split, allowing sister chromatids to separate?
Metaphase I
Anaphase I
Telophase I
Anaphase II
In which stage of meiosis do the sister chromatids become independent chromosomes due to the splitting of the centromere?
Prophase II
Anaphase II
Metaphase II
Telophase II
If a cell undergoing meiosis fails to divide its centromeres during a specific stage, which of the following processes would be directly affected?
Segregation of sister chromatids during Anaphase II
Pairing of homologous chromosomes during Prophase I
Formation of the spindle apparatus
Condensation of chromosomes during Prophase I
The separation of sister chromatids during meiosis is a crucial event. This separation is a direct consequence of which of the following?
Formation of the chiasmata
Alignment of homologous chromosomes at the metaphase plate
Division of the centromere
Synapsis of homologous chromosomes
Match the following meiotic stages with the corresponding events:
| Stage | Event |
|---|---|
| 1. Anaphase I | a. Sister chromatids separate |
| 2. Anaphase II | b. Homologous chromosomes separate |
| 3. Metaphase I | c. Homologous chromosomes align at the metaphase plate |
| 4. Telophase II | d. Chromosomes decondense, nuclear envelope reforms |
Which of the following is the correct matching?
1-a, 2-b, 3-c, 4-d
1-b, 2-a, 3-c, 4-d
1-c, 2-a, 3-b, 4-d
1-b, 2-d, 3-c, 4-a
