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13 Dec 2019

Which of the following is not in the correct order of cell cycleprogression?

a. interphase, prophase, cytokinesis

b. G2, telophase, G1

c. G1, S, cytokinesis

d. cytokinesis, G1, S

e.mitosis, cytokinesis, G2

Which of the following statements are correct?

a. Cells in G1 enter S phase when cyclin levels decrease.

b. MPF activity decreases the level of mitotic cylin.

c. Cells that enter M phase must progress to G1.

d. MPF activity correlates with levels of mitotic cyclin

e. Mitotic cyclin is degraded by endosomes after beingubiquitinylated by MPF

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Trinidad Tremblay
Trinidad TremblayLv2
17 Dec 2019
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Related questions

Part A:

In prokaryotes and eukaryotes cell reproduction is similar in that it requires some kind of signal to proceed, DNA replication, careful separation of the DNA into two equal portions, and division of the cytoplasm. How is cell reproduction different in prokaryotes and eukaryotes?

Select one:

a. In a eukaryotic organism, the signals for cell division are usually not related to the environment but to the function of the entire organism.

b. Eukaryotic cells constantly divide whenever environmental conditions are adequate and the cells are large enough.

c. The linear chromosomes in prokaryotes are constantly being updated.

d. Prokaryotic cell division requires cytokinesis before mitosis because of their small size.

e. The sexual phase of most prokaryotes (bacteria) is essential to the rapid cell division required for infection.

Part B:

What does the name Cyclin Dependent Kinase stand for?

Select one:

a. A protein important to the cell cycle that is dependent on DNA synthesis.

b. An enzyme that cuts DNA so that chromosomes can segregate.

c. An enzyme that phosphorylates other proteins using ATP only when the protein Cyclin is bound to the enzyme.

d. An enzyme that rolls along microtubules dragging a vesicle.

e. An enzyme that connects chromosomes to the spindle fiber.

Part C:

The Cell Cycle is divided into Mitosis, Cytokinesis, and Interphase. Mitosis can be ordered into the following phases:

Select one:

a. Prophase/Prometaphase/Metaphase/Anaphase/Telophase

b. Anaphase/Prometaphase/Metaphase/Prophase/Telophase

c. Metaphase/Anaphase/Telophase/Prophase/Prometaphase

d. Telophase/Prophase/Prometaphase/Metaphase/Anaphase

e. Anaphase/Telophase/Prophase/Prometaphase/Metaphase

Part D:

The Cell Cycle is divided into Mitosis, Cytokinesis, and Interphase. Interphase can be ordered into the following phases:

Select one:

a. S/G1/G2

b. G2/G1/S

c. G1/S/G2

d. G2/S/G1

e. G1/G2/S

(A) What is the correct order of cell cycle phases? Select one:

a. G1 to S to G2 to M phase b. M to G2 to S to G1 phase c. none of these d. G1 to G2 to S to M phase e. G1 to M to S to G2 phase

(B) What cyclin-cdk complex is critical in mitosis? Select one:

a. Cyclin E - cdk2 b. cyclin E - cdk1 c. cyclin A - cdk 2 d. cyclin B - cdk1 e. cyclin D cdk 4

(C) Which of the following proteins is progressively phosphorylated throughout the cell cycle from G1 through to M phase? Select one:

a. E2F1 b. pRb c. RNA polymerase II d. cyclin D e. cyclin B

(D) An antibody generated from a mouse hybridoma cell line is called a mouse ________. Select one:

a. anticlonal antibody b. polyclonal antibody c. synclonal antibody d. none of these answers e. monoclonal antibody

1) When studying living cells in a laboratory, researchers sometimes use drugs as a way to cause cells to remain in a particular phase of the cell cycle. For example, aphidicolin inhibits DNA synthesis in eukaryotic cells and causes them to remain in the G1 phase because they cannot replicate their DNA. In what phase of the cell cycle—G1, S, G2, prophase, metaphase, anaphase, or telophase—would you expect somatic cells to stay if the following types of drug were added?

a) A drug that inhibits microtubule formation

b) A drug that allows microtubules to form but prevents them from shortening

c) A drug that inhibits cytokinesis

d) A drug that prevents chromosomal condensation

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