18 Questions
What phase of the cell cycle involves separation of sister chromatids?
Anaphase
Which of the following is a characteristic of cancer cells?
Do not respond to inhibitory signals
What is the process by which cancer cells export themselves to form new tumors?
Metastasis
In the context of cancer, what is a benign tumor characterized by?
Not invading surrounding tissues
Which phase of the cell cycle involves the replication of DNA?
Interphase
What is the major factor contributing to the development of melanomas?
Sun exposure
What process is activated by internal or external signals and leads to the programmed cell death?
Apoptosis
What term describes the fragments of a cell remaining after apoptosis, which are engulfed by white blood cells?
Apoptotic bodies
Which of the following is the correct sequence of phases in the cell cycle?
G1 Phase, S Phase, G2 Phase, M Phase
In which phase of mitosis do the sister chromatids line up at the center of the cell?
Metaphase
What is the term for the phenomenon where cancer cells do not respond normally to the body's control mechanisms?
Cell cycle disregulation
What correctly describes cytokinesis in a plant cell compared to an animal cell?
Animal cells form a cell plate during cytokinesis.
What happens if DNA integrity is not checked during the G₁ checkpoint?
Apoptosis (cell suicide) occurs
Which checkpoint verifies that all chromosomes are attached to spindles?
Mitotic stage checkpoint
How do cyclins affect the cell cycle?
They are internal signals present only during certain stages of the cell cycle
What happens if the proper growth signals are not present during the G₁ checkpoint?
Cell enters G₀
What role does the hormone estrogen play in the cell cycle?
It stimulates the lining of the uterus to divide and prepare for egg implantation
What is the relationship between the cell cycle and cancer?
Cancer cells have abnormal cell cycles
Test your knowledge on cellular reproduction basics including concepts like contact inhibition, apoptosis, and different phases of the cell cycle. Learn about key processes like mitosis and cytokinesis.
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