Exam 4 Biology 1408
A specific gene, called GRAB, prevents a cell from entering mitosis if there are any signs of DNA damage.
This means that GRAB would be a type of - Answer-cell cycle checkpoint
Apoptosis - Answer-programmed cell death; often referred to as cellular suicide
Cell cycle checkpoints detect and control - Answer-DNA content, signals that promote cell division, DNA
damage, and proper chromosome alignment.
-monitor each stage of the cell cycle and prevent progression through the cell cycle until previous stages
have been successfully completed.
Cell division is usually kept under control by - Answer-several checkpoints in the cell cycle and by
apoptosis
At the G2 checkpoint, cells pause to - Answer-make sure that all chromosomes have been copied and
are undamaged.
-DNA damage
- DNA replication completeness
(Have chromosomes replicated properly?)
At the G1 checkpoint, cells pause to - Answer-cell size, nutrients, growth factors, DNA damage
(Is there DNA damage that needs repair?)
Programmed cell death is called - Answer-apoptosis
, Proteins scan chromosomes for damage during the - Answer-G2 checkpoint
Cancer consists of too much - Answer-cell division
Which of the following helps to prevent cancer? - Answer-all of the above
-quit smoking, maintain a healthy weight, and get vaccinated.
---- EX: HPV vaccine,
Cancer is: - Answer-uncontrolled cell growth/division (mitosis)
-a disease of unregulated cell division: cells divide inappropriately and accumulate, in some instances
forming a tumor.
What causes cancer to kill people? - Answer-Cancer cells crowd out normal cells and disrupt organ
functions.
-when cells accumulate enough DNA damage to interfere with multiple checkpoints
-mutated oncogene is overactive, allowing the cell to divide more often without normal check. Cells
begin to pile up into a tumor. Cells have lost contact inhibition, dividing even when crowded. Mutations
permit tissue invasion, metastasis, and new blood vessel growth
chemotherapy is used in the battle against - Answer-cancer
Chemotherapeutics act on - Answer-all dividing cells
Radiation therapy for cancer works by - Answer-damaging the cell's DNA, resulting in cell death
A specific gene, called GRAB, prevents a cell from entering mitosis if there are any signs of DNA damage.
This means that GRAB would be a type of - Answer-cell cycle checkpoint
Apoptosis - Answer-programmed cell death; often referred to as cellular suicide
Cell cycle checkpoints detect and control - Answer-DNA content, signals that promote cell division, DNA
damage, and proper chromosome alignment.
-monitor each stage of the cell cycle and prevent progression through the cell cycle until previous stages
have been successfully completed.
Cell division is usually kept under control by - Answer-several checkpoints in the cell cycle and by
apoptosis
At the G2 checkpoint, cells pause to - Answer-make sure that all chromosomes have been copied and
are undamaged.
-DNA damage
- DNA replication completeness
(Have chromosomes replicated properly?)
At the G1 checkpoint, cells pause to - Answer-cell size, nutrients, growth factors, DNA damage
(Is there DNA damage that needs repair?)
Programmed cell death is called - Answer-apoptosis
, Proteins scan chromosomes for damage during the - Answer-G2 checkpoint
Cancer consists of too much - Answer-cell division
Which of the following helps to prevent cancer? - Answer-all of the above
-quit smoking, maintain a healthy weight, and get vaccinated.
---- EX: HPV vaccine,
Cancer is: - Answer-uncontrolled cell growth/division (mitosis)
-a disease of unregulated cell division: cells divide inappropriately and accumulate, in some instances
forming a tumor.
What causes cancer to kill people? - Answer-Cancer cells crowd out normal cells and disrupt organ
functions.
-when cells accumulate enough DNA damage to interfere with multiple checkpoints
-mutated oncogene is overactive, allowing the cell to divide more often without normal check. Cells
begin to pile up into a tumor. Cells have lost contact inhibition, dividing even when crowded. Mutations
permit tissue invasion, metastasis, and new blood vessel growth
chemotherapy is used in the battle against - Answer-cancer
Chemotherapeutics act on - Answer-all dividing cells
Radiation therapy for cancer works by - Answer-damaging the cell's DNA, resulting in cell death
