BIOC 212 Lecture Notes - G1 Phase, Spindle Apparatus, G2 Phase

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taupehare180

22 Aug 2012

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Very fundamental for all cells: bacteria, mammalian, . They all need to duplicate: cell content. Two identical cells = the result of cell cycle. 2 separate processes involved with the cell cycle: cell growth. Driven by protein synthesis: cell division. It has been studied for a long time but it"s only a few years that they could study it at a molecular level. You see two phases (for mammalian cells for example: m phase. Attach the spindle poles to the different chromosomes. Chromosomes have to line up in the middle. Cytokinesis: cell is divided in 2. Figure 17 2 the events of eucaryoticcell division as seen under a microscope. the easily visible processes of nuclear division (mitosis) and cell division (cytokinesis), collectively called m phase, typically occupy only a small fraction of the cell cycle. The other, much longer, part of the cycle is known as interphase. The part of interphasewhere dna is replicated is called s phase (not shown). o.

Related Questions

1- Most of a cell's life is spend in this phase of the cell cycle:

--------------------

2- The cell cycle is a highly regulated process.

True

False

3- Cells replicate their DNA during ________________ phase.

4- In animal cells, ________________________ is the indentation of the cell's surface that marks cytokinesis, the final splitting of the membrane, in the process of cell division.

cleavage furrow

binary fission

cell plate

sister chromatids

5- Somatic ("body") cells are _______________ (2n). This means there are two copies of each chromosome.

6- During the _______ phase(s) cells perform their everyday functions.

7- When chromosomes are duplicated the two strands are called _______________________________ and they are linked together at a point called the ____________________.

sister strands; kinetochore

sister chromatids; centromere

dual chromatids; centromere

genes; chromatid

8- New somatic âbodyâ cells are formed by this process:

meiosis

binary fission

replication

mitosis

9- The cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.

10- Cells replicate their DNA during ________________ phase.

pucecat917

The phase of the cell cycle during which the cell ismetabolically active making proteins, replicating DNA andorganelles:

		Cytokinesis
		Interphase
		Prophase
		Metaphase
		Telophase

ivoryspider500

Match the term with its correct definition or explanation.

Chromatin

Homologous Chromosomes

Sister chromatids

Diploid

Interphase

S Phase

Synapsis

Crossing Over

Cell Plate

Cleavage Furrow

A. The exchange of genetic material between homologous chromosomes during meiosis I.

B. The pairing or tight association of homologous chromosomes in meiosis I. Results in the formation of a tetrad.

C. Non-identical copies of the same chromosome. Present in all diploid cells, even before replication. These chromosomes are the same length and contain genes for the same characteristics, but may have different alleles for each gene. D.

The period of the cell cycle that includes G1, S phase, and G2. E. A structure that develops during cytokinesis in plants.

F. Condensed chromosomes.

G. An invagination that develops during cytokinesis in animal cells.

H. When an organism has two copies of every chromosome (2n).

I. Two identical copies of a chromosome. These are only present after DNA replication.

J. The phase of the cell cycle when DNA is replicated.

BIOC 212 Lecture Notes - G1 Phase, Spindle Apparatus, G2 Phase

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