For the cell cycle regulation:
- Probably True (T): 1, 2
- Probably False (F): 1, 2
- Not Possible to Conclude (NP): 1
What occurs in cell cycle regulation?
Probably True (T):
The activation of DNA synthesis may result from the stimulatory activity of one or more cytoplasmic factors.
This statement is likely true based on the data.
The transition from mitosis to G1 appears to result from the disappearance or inactivation of a cytoplasmic factor present during M phase.
This statement is likely true based on the data.
Probably False (F):
G1 is not an obligatory phase of all cell cycles.
This statement contradicts the data, as the G1 phase is observed in all cell cycles.
The transition from G2 to mitosis may result from the presence in the G2 cytoplasm of one or more factors that induce chromatin condensation.
This statement contradicts the data, as the G2 to mitosis transition is not supported by the experiment.
Not Possible to Conclude (NP):
The transition from S to G2 may result from the presence of a cytoplasmic factor that inhibits DNA synthesis.
This statement cannot be concluded from the data, as there is no information about the presence or absence of such a factor.
Complete question:
Based on these results, identify each of the following statements about cell cycle regulation as probably true (T), probably false (F), or not possible to conclude from the data (NP). Sort each statement into the appropriate bin.
The activation of DNA synthesis may result from the stimulatory activity of The transition from mitosis to G1 appears to result from the one or more cytoplasmic factors.
G1 is not an obligatory phase of all cell cycles.
The transition from mitosis to G1 appears to result from the disappearance or inactivation of a cytoplasmic factor present during M phase
The transition from G2 to mitosis may result from the presence in the G2 cytoplasm of one or more factors that induce chromatin condensation
The transition from 5 to G2 may result from the presence of a cytoplasmic factor that inhibits DNA synthesis