Homework Answers
Cytokinesis is the end of cell cycle and is not a checkpoint that controls progression of cell cycle..Therefore Option 4 is correct.
Option 1 is wrong because cyclins are signals that allow cells to pass check points and control progression of cell cycle.
Option 2 is wrong because it refers to G2 checkpoint.
Option 3 is wrong because it refers to M checkpoint.
Option 5 is wrong because it refers to G1 checkpoint.
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Which of the following is NOT a checkpoint that controls the progression of the cell cycle?...
Cell cycle progression is controlled by the rhythmic accumulation and degradation of:
Question 3 Cell cycle progression is controlled by the rhythmic accumulation and degradation of:Question 3 options:CyclinsCyclin-dependent kinases (Cdks)BothQuestion 4 During metaphase of mitosis:Question 4 options:DNA is replicatedSister chromatids line up together on the equatorDNA is uncoiled and in useSpindle fibers are absentPreparation for cell division beginsQuestion 5 During cell division, cytokinesis is completed by the end of:Question 5 options:prophaseanaphasemetaphasetelophaseinterphaseQuestion 6 Crossing over or recombination most frequently occurs during:Question 6 options:prophase I of meiosismetaphase II of meiosisprophase of mitosistelophase of mitosisprophase II of meiosisQuestion 7 In...
The spindle checkpoint is a key mechanism that controls mitosis. Which of the following are functions...
The spindle checkpoint is a key mechanism that controls mitosis. Which of the following are functions of the spindle checkpoint? Preventing dephosphorylation by inactivation of mitotic phosphatases Sensing attachment of kinetochores to microtubules Protecting Cyclin B from degradation until the metaphase-to-anaphase transition Protecting cohesin from cleavage by separase until all chromosomes are attached
QUESTION 1 Which of these proteins is responsible for preventing cell cycle progression if DNA damage...
QUESTION 1 Which of these proteins is responsible for preventing cell cycle progression if DNA damage is detected? Rb p53 ras E7 1 points QUESTION 2 Which of the following is a proto-oncogene? Cyclin Cdk ras All of the above 1 points QUESTION 3 The photograph below shows a chromosome. In what phase of the cell cycle was the cell from which this chromosome taken? G1 S G2 M Interphase 1 points QUESTION 4 Which of the...
In order for a cell to move past the G2 checkpoint and into M phase, the...
In order for a cell to move past the G2 checkpoint and into M phase, the cell has to check for which of the following? A All of the DNA has been replicated B. All of the DNA damage has been repaired c. All of the chromosomes are attached to the mitotic spindle D. A and B only E. All of the above (A, B, and C) What type of DNA damage can result in a base loss? A deamination...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is known as a proto-oncogene. True False QUESTION 2 Cytokinesis occurs after which stage or phase of the cell cycle? a. G2 b. S c. G0 d. G1 e. M phase QUESTION 3 During cell-cycle checkpoints, protein kinases known as CDKs phosphorylate target proteins only when they associate with a cyclin. True False QUESTION 4 During mitosis, many of the spindle fibers attach to chromosomes...
A. Provide an overview of the eukaryotic cell cycle, including cellular activities during differe...
A. Provide an overview of the eukaryotic cell cycle, including cellular activities during different phases of the cycle. B. Explain how the cell cycle is cyclically controlled, including the roles of cyclins and cyclin- dependent kinases (Cdks). C. Describe the activities of the chromosomes and cytoskeleton during M-phase of the cell cycle.
1 You are a studying the progression of cells through the cell cycle. You are particularly...
1 You are a studying the progression of cells through the cell cycle. You are particularly interested in the cyclins E and A, both of which contribute sequentially to the same cell cycle transition. In this case one cyclin initiates the transition and the other completes the process. In these images you see cell extracts from Hela Cells. A) shows the levels of various proteins, while B) shows the amount of DNA in the cells, more DNA shifts this graph...
QUESTION 7 If you inject a G1 cell that contains 36 chromosomes with a G2/M cyclin,...
QUESTION 7 If you inject a G1 cell that contains 36 chromosomes with a G2/M cyclin, what would happen? (hint - look at slide with cell fusion experiments) The G1 cell would complete mitosis with daughter cells that have 18 chromosomes each The G1 cell would enter mitosis but arrest at the spindle checkpoint because the chromosomes were not properly replicated The G1 cell would complete mitosis with daughter cells that have 36 chromosomes each The G1 cell would go...
Question 102 Question 10 2 points ✓ Saved Progression through the cell cycle is maintained in...
Question 102 Question 10 2 points ✓ Saved Progression through the cell cycle is maintained in a unidirectional manner through the expression of stage specific cycling and cycindependent kinases or COK Which of the following cyclin-CDK complex is required to drive the cell cycle past the morphogenesis checkpoint? • CyclinB.COK CyclinA-COK2 CyclinACDK: Cyclo.com Cycie CD
Cyclins modulate the progression of cells through the cell cycle by Select one: o activating G...
Cyclins modulate the progression of cells through the cell cycle by Select one: o activating G proteins inducing synthesis of growth cell receptors. o activating prokein kinases that are critical for regulating cell division. degrading histones. increasing production of DNA polymerase.
The spindle checkpoint is a key mechanism that controls mitosis. Which of the following are functions of the spindle checkpoint? Preventing dephosphorylation by inactivation of mitotic phosphatases Sensing attachment of kinetochores to microtubules Protecting Cyclin B from degradation until the metaphase-to-anaphase transition Protecting cohesin from cleavage by separase until all chromosomes are attached
In order for a cell to move past the G2 checkpoint and into M phase, the cell has to check for which of the following? A All of the DNA has been replicated B. All of the DNA damage has been repaired c. All of the chromosomes are attached to the mitotic spindle D. A and B only E. All of the above (A, B, and C) What type of DNA damage can result in a base loss? A deamination...
1 You are a studying the progression of cells through the cell cycle. You are particularly interested in the cyclins E and A, both of which contribute sequentially to the same cell cycle transition. In this case one cyclin initiates the transition and the other completes the process. In these images you see cell extracts from Hela Cells. A) shows the levels of various proteins, while B) shows the amount of DNA in the cells, more DNA shifts this graph...
QUESTION 7 If you inject a G1 cell that contains 36 chromosomes with a G2/M cyclin, what would happen? (hint - look at slide with cell fusion experiments) The G1 cell would complete mitosis with daughter cells that have 18 chromosomes each The G1 cell would enter mitosis but arrest at the spindle checkpoint because the chromosomes were not properly replicated The G1 cell would complete mitosis with daughter cells that have 36 chromosomes each The G1 cell would go...
Question 102 Question 10 2 points ✓ Saved Progression through the cell cycle is maintained in a unidirectional manner through the expression of stage specific cycling and cycindependent kinases or COK Which of the following cyclin-CDK complex is required to drive the cell cycle past the morphogenesis checkpoint? • CyclinB.COK CyclinA-COK2 CyclinACDK: Cyclo.com Cycie CD
Cyclins modulate the progression of cells through the cell cycle by Select one: o activating G proteins inducing synthesis of growth cell receptors. o activating prokein kinases that are critical for regulating cell division. degrading histones. increasing production of DNA polymerase.
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