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BIO 115 Exam 5
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Exam of 4 pages for the course Act 4 The Crucible at Act 4 The Crucible (BIO 115 Exam 5)
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BIO 115 Exam 5Describe the main parts of the cell cycle - correct answer-Interphase - most time spent here
of which is made up of G1, S and G2
G1 - Cell growth before DNA synthesis
S - DNA synthesis
G2 - Cells prepare to divide
Mitosis - Prophase, Metaphase, Anaphase, Telophase
Apoptosis - correct answer-Programmed cell death
What is the importance of mitosis - correct answer-The nuclei of the two new daughter cells
have the same number and kinds of chromosomes as the parent cell
Phases of Mitosis - correct answer-Prophase - Spindle fibers appear, the chromosomes
condense
Metaphase - Lining up of chromosomes along cell equator
Anaphase - Sister chromatids split and then are pulled toward respective poles of the cells
Telophase - Spindle disappears the nucleoli reappear and nuclear envelopes form
Meitosis = cloning
Cytokinesis - correct answer-Process of splitting - division of the cytoplasm and organelles
Cancer - correct answer-When all checkpoints for a particular process fail, a cell loses
control over its replication
What is the significance of meiosis - correct answer-Reduction division - reduce
chromosomes in cells from 46 to 23
sex cells - they create variation
What is nondisjunction - correct answer-nondisjunction during meiosis when either
homologous chromosomes (meiosis I) or sister chromatids (meiosis II) fail to separate.
List three syndromes caused by abnormal chromosome number - correct answer-Down
Syndrome
Turner Syndrome
Klinefelter Syndrome
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