BSC 197 Study Guide - Quiz Guide: Polyploid, Haplodiploidy, Proofreading

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29 Dec 2016

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The phases of the cell cycle and what is happening in each phase. Interphase (about 90% of the cell cycle) can be divided into subphases: S phase ( synthesis ): the cell grows during all three phases, but chromosomes are duplicated only during the s phase. The phases of mitosis and what is happening in each. Metaphase-chromosomes are pushed to midline of cell by spindles. Spindles begin to shorten and pull chromosomes apart. Two sister chromatids are now two separate chromosomes. Telophase-chromosomes are pulled to opposite ends of cell. The mechanism of chromosomal separation (molecular roles of the kinetochore) Some spindle microtubules attach to the kinetochores of chromosomes and begin to move the chromosomes, sister chromatids separate and move along the kinetochore microtubules toward opposite ends of the cell. How cell cycle control and cancer are related. Cancer cells do not respond normally to the body"s control mechanisms.

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

amethystyak657

Select all of the following statements that typically occur during anaphase:

_____________________

Sister chromatids are copied and separate into separate chromosomes.

The non-kinetochore microtubules elongate.

Condensin proteins assist with separation of the chromatids.

The kinetochore microtubules shorten.

Cohesin proteins are degraded.

Cytokinesis of animal cells is characterized by the appearance of a cleavage furrow. When does the cleavage furrow first start to appear?

_____________________

) What is the longest stage of the cell cycle? Interphase, Prophase, Metaphase, Anaphase of Telophase.

2) When are chromosomes duplicated?

3) what happens during the G2 phase

4) What is the difference between karyokinesis and cytokinesis?

5) what is a bivalent?

6) how does meiosis generate genetic diversity?

BSC 197 Study Guide - Quiz Guide: Polyploid, Haplodiploidy, Proofreading

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