#Question id: 40469
#Applied Microbiology
While the amount of DNA doubles during the S phase, the number of chromosomes remains the same. In which subsequent phase does the actual separation of sister chromatids occur, effectively doubling the chromosome count temporarily?
#Question id: 40470
#Applied Microbiology
Consider the following statements regarding the G1 Phase (Gap 1):
Statement I: The G1 phase corresponds to the interval between mitosis and the initiation of DNA replication.
Statement II: During G1, the cell is metabolically active and grows continuously, but does not replicate its DNA.
Which of the above statements is/are correct?
#Question id: 40471
#Applied Microbiology
Assertion (A): If a cell contains 2C amount of DNA in the G1 phase, it will contain 4C amount of DNA in the G2 phase.
Reason (R): The G2 phase is the site of DNA replication where the genetic material is duplicated.
Choose the correct option:
#Question id: 40472
#Applied Microbiology
Match the Cell Cycle Phase in Column I with the specific event in Column II.
| Column I (Phase) | Column II (Specific Event) |
| A. S Phase | 1. Cells exit the cell cycle and enter a quiescent stage |
| B. G2 Phase | 2. Synthesis of histone proteins and DNA replication |
| C. G0 Phase | 3. Synthesis of tubulin proteins for spindle formation |
| D. M Phase | 4. Condensation of chromatin into chromosomes |
#Question id: 40473
#Botany
| List-I (Algae) | List-II (Common Name) |
| A. Batrachospermum | I. Water Net |
| B. Hydrodictyon | II. Frog Spawn Alga |
| C. Ulva | III. Umbrella Plant |
| D. Acetabularia | IV. Sea Lettuce |
#Question id: 40474
#Applied Microbiology
Which molecule is constitutively expressed on the surface of professional Antigen-Presenting Cells (APCs) to present antigenic peptides to CD4+ T cells?