BIOLE 207 Lecture Notes - Lecture 1: Cell Cycle, Sister Chromatids, G2 Phase

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salmoncricket661

7 Feb 2020

School

University of Alberta

Department

Biologie: Cours de 1er cycle

Course

BIOLE 207

Professor

COREY DAVIS

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Document Summary

The eukaryotic cell cycle has the interphase and the mitotic phase. The interphase consists of the g1, s phase, and g2 phase. The mitotic phase has the mitosis and the cytokinesis. The mitosis in prokaryotes is known as binary fission. Mitosis in prokaryotes and unicellular eukaryotes is for the purpose of asexual reproduction, which is the production of two identical cells. Mitosis in eukaryotes is for the growth and repair in somatic cells where in the daughter cells have the same number of chromosomes and the total content of dna. There are 4 stages in mitosis in a continuum fashion. A) prophase: nuclear membrane dissolves and spindle fibers form, and further condensation of the dna happens. B) metaphase: the chromosomes align in the middle of the cell at the metaphase plate. C) anaphase: sister chromatids separate in counteracting motion and then uncondensed for easier accessibility. Telophase: nuclear membrane starts to reform, and the cell starts to cleave.

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

31.????? interphase A. cytoplasm divided between the two daughter cells

32.????? chromosomenumber B. final phase of mitosis; daughter nuclei form

33.????? chromatid C. sum total of chromosomes in all cells of a given

type

34.????? cytokinesis D. chromosomes condense and mitotic spindle

begins to form

35.????? metaphase E. chromosomes line up at spindle equator

36.????? alleles F. sister chromatids separate, move to opposite

spindle poles now

37.????? prophase G. none between meiosis I and II

38.????? telophase H. half of a chromosome in prophase

39. ????? anaphase I. different molecular forms of the same gene

Matching

ultramarineporpoise990

A cell in G1 of interphase has 12 chromosomes. How many chromosomes and DNA molecules will be found per cell when this original cell progresses to the following stages?
....G2 of interphase, Metaphase I of meiosis, Prophase of mitosis, Anaphase I of meiosis, Anaphase II of meiosis, Prophase II of meiosis, After cytokinesis following mitosis, and After cytokinesis following meiosis II.

**If you wouldn't mind, please arrange them in chronological order that it happens in the process so it's easier to understand, thanks**

coppercrab413

BIOLE 207 Lecture Notes - Lecture 1: Cell Cycle, Sister Chromatids, G2 Phase

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