BCH 3053 Lecture Notes - Lecture 1: Interphase, Metaphase, Cytokinesis

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felipesierra213

9 Sep 2022

School

USF

Department

Biochemistry

Course

BCH 3053

Professor

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Instructions: the virtual cell division lab is on the 03. 01 lesson assessment page. On the image, it says click anywhere to start . Follow the instructions as you move through the lab. The lab activity will keep count of your data on the right and you can record this into the data table at the end of each trial. Objective(s): observe and record data as i move through the lab. Hypothesis: the majority of the cells i observe will be in interphase. Record the number of cells you observed in each part of the lab activity. Number of cells in part 1 number of cells in part 2. Record any observations about the cells you observed. Interphase the dna is duplicating to get ready for mitosis. The chromatin in the nucleus condenses to look like chromosomes. The nuclear membrane dissolves and spindle fibers form. Metaphase spindle fibers align the chromosomes in the center of the cell"s nucleus.

Related Questions

How do the different phases of mitosis overcome some of the problems associated with the cell division? Hint: interphase, prophase, prometaphase, metaphase, anaphase, telophase, cytokinesis.

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

From the results entered in the table below, estimate the percentage of time the onion root tip cells spend in each different stage of the cell cycle

Stage of Cell Cycle		Number of Cells (Your Root Tip)	Number of Cells (Your Partnerâs Root Tip)	Proportion of Cells in Each Stage of the Cell Cycle
Interphase		35	34
M-Phase	Prophase	4	3
	Metaphase	4	3
	Anaphase	3	4
	Telophase	2	3
Cytokinesis		2	2

Interpreting your observations:

What can you conclude about the proportion of time cells spend in M-phase?

Do you think the proportion of time spent in M-phase would be greater or smaller in more mature regions of the root?

skyturtle421

BCH 3053 Lecture Notes - Lecture 1: Interphase, Metaphase, Cytokinesis

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