EBIO 1210 Study Guide - Midterm Guide: Sister Chromatids, G1 Phase, Advanced Spaceborne Thermal Emission And Reflection Radiometer

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ceruleanant86

30 Oct 2014

School

CU-Boulder

Department

Ecology & Evolutionary Biology

Course

EBIO 1210

Professor

A L L

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Document Summary

Cytokinesis- dividing the rest of cell cytokinesis and mitosis are called m phase = two genetically identical cells: interphase (cell growth, metabolism and copying of chromosomes and organelles in preparation for cell division) S phase ( synthesis ) dna synthesis/replicated prepare for cell div. Go through meiosis: each duplicated chromosome has two identical sister chromatids (genetically identical daughter cells), which separate during cell division. Prophase (dna is already doubled (s phase: microtubules shoot out aster. To come in and grab chromosomes at centromere. Metaphase- microtubule from each end contacts chromosomes: microtubules align chromosomes on metaphase plate . Anaphase- microtubules pull sister chromatids apart, move toward. Telophase- nuclear envelope reforms: division of cytoplasms starts, formation of two cells, the frequency of cell division varies with the type of cell: skin, liver, nerve, muscle, these differences result from regulation at the molecular level.

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

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.

1) A tissue in a mouse contains two types of cells: one that divides rapidly and one that divides more slowly. The most likely difference between these two cell types is that the slow-dividing cell type spends more time in phase

G1, G2, G3, M, or S

2) In meiosis II

a- four genetically identical cells are generated

b- sister chromatids are separated

c- DNA replication occurs