Biology 2382B Lecture Notes - Lecture 6: Spindle Apparatus, Dna Replication, Nuclear Membrane

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grayskunk704

18 Mar 2020

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Coordination of growth with division ensuring faithful replication of. : gi - s - 62 (interphase) growth i mitotic phase growth. Prophase: nuclear envelope breaks down , spindle apparatus forms chromosomes condense chromatids metaphase plate separate towards spindle poles chromosomes flat are decordense , interphase , in nuclear membrane reassembles more rounded in mitosis. Replicates cell bud into lacks cycle stage inferred by. Long ga and m phases elongation occurs by formation of septum. Both defects yeast have temperature - sensation mutants ( cdc) proteins cell division in causing. Loss of cdc 2 achuty are heavily genes prevents cell from entering m conserved across eukaryotes cycle regulation. Mitosis promoting factor (mpf) : heterodimer of. M cdc 2 is always present , not always active. Cdks for different for occurs respective at checkpoints stage of transcriptional. Ubiquitin (ub) cell cycle level and by ubiquitin - mediated proteasome - dependent degradation. Ubiquitin addition of targeted for destruction ligases control.

Related Questions

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

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

3. There are about 250 million molecules of hemoglobin in each red blood cell. Considering that all of the heme molecules are binding oxygen and that the red blood cell volume is about 0.1 pL, what is the concentration of O₂ in a red blood cell? (For comparison, water at 37^oC contains about 0.4 mM dissolved O₂.) Please show work.

4. Cell Cycle (fill-in the blank with prophase, metaphase, anaphase, telophase, cytokinesis or stages of interphase (Growth 1, Synthesis, Growth 2). (some may be used more than once while others may not be used at all.)

__________ separation of sister chromatids (copied chromosomes)

__________ copied chromosomes align in the middle of the cell

__________ microtubule spindle forms

__________ nuclear membrane forms around chromatin

__________ separation of all cellular components into two different cells

__________ copied chromosomes condense

__________ duplication of DNA

__________ nuclear membrane breaks down

Biology 2382B Lecture Notes - Lecture 6: Spindle Apparatus, Dna Replication, Nuclear Membrane

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