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BIO MidTerm Final
Terms in this set (13)
Eukaryotic chromosomes are composed of which of the following macromolecules?
DNA and Proteins. Chromosomes are made up of DNA tightly coiled many times around proteins called histones.
How is plant cell cytokinesis different from animal cell cytokinesis?
Plant cells deposit vesicles containing cell wall building blocks on the metaphase plate; animal cells form a cleavage furrow.
What are plant cell walls made out of?
FtsZ is a bacterial cytoskeletal protein that forms a contractile ring involved in bacterial cytokinesis. Its function is analogous to _____.
the cleavage furrow of eukaryotic animal cells.
What is a centriole?
a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
At which phase of the cell cycle do centrioles begin to move apart in animal cells?
In a diploid cell with 5 chromosome pairs (2n = 10), how many sister chromatids will be found in a nucleus at prophase of mitosis?
If a cell at metaphase of mitosis contains 20 sister chromatids, how many chromosomes will be present in a G1 cell?
Proteins that hold sister chromatids together
The beginning of anaphase is indicated by which of the following processes.
Enzyme cleavage of cohesin
If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a line of such plants?
Clone the plant
At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
site of crossing over
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