Prepare for NEET Biology Cell Cycle and Cell Division (Interphase) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert insights into G1, S, G2 phases and DNA replication.
NEET Questions / Botany / Cell Cycle and Cell Division / Interphase
A cell in G1 phase has 2C DNA content. If this cell undergoes endoreduplication twice followed by standard mitosis, what will be the DNA content of the resulting daughter cells?
2C
4C
8C
16C
Which of the following is NOT a crucial checkpoint control mechanism during Interphase?
Checking for DNA damage before S phase
Verifying DNA replication completion before G2
Ensuring proper spindle fiber attachment
Monitoring cellular resource availability before G1
In a rapidly dividing cell population, a drug inhibiting the synthesis of cyclin D would most directly affect which phase of the cell cycle?
G0
S
G2
G1
If a cell has a mutation that prevents the formation of the pre-replication complex during interphase, which process will be directly impacted?
Chromosome condensation
Spindle fiber formation
Cytokinesis
DNA Replication initiation
A researcher observes a cell with significantly increased heterochromatin formation during interphase. This observation most likely suggests increased:
Transcriptional activity
DNA replication rate
Gene silencing
Protein synthesis
During which stage of interphase are the majority of cellular organelles duplicated?
G1
S
G2
M
During which phase of the cell cycle does DNA replication occur?
G1 phase
S phase
G2 phase
M phase
Which checkpoint in interphase checks for DNA damage before replication?
G1/S checkpoint
G2/M checkpoint
M checkpoint
S/G2 checkpoint
If a cell has 2n chromosomes at the beginning of interphase, how many chromatids will it have at the end of S phase?
n
2n
3n
4n
The major event of the G2 phase is:
DNA replication
Cell growth and protein synthesis
Preparation for mitosis
Cytokinesis
