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CAMPBELL BIOLOGY 12TH EDITION: CHAPTER 12 EXAM REVIEW QUESTIONS WITH CORRECT ANSWERS
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CAMPBELL BIOLOGY 12TH EDITION: CHAPTER 12 EXAM REVIEW QUESTIONS WITH CORRECT ANSWERS
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CAMPBELL BIOLOGY 12TH EDITION:CHAPTER 12 EXAM REVIEW
QUESTIONS WITH CORRECT ANSWERS
Cell division - Answer-Most cell division result in two daughter cells from one parent cell
(except meiosis)
-no cells are immortal
Mitosis - Answer-a cellular process that replicates chromosomes and produces two
identical nuclei in preparation for cell division
Breaks down a parent cell into two daughter cells
Meiosis - Answer--a type of division that can produce sperm and egg cells
-reduces the number of chromosomes in the parent cell by half
Daughter cell - Answer-genetically identical result of division from one parent cell
Parent cell - Answer-the cell that breaks into two daughter cells
Gametes - Answer-sex cells (reproductive)
Produced by meiosis
Somatic cells - Answer-normal cells (nonreproductive)
Binary fission - Answer-asexual reproduction by a separation of the cell body into two
new bodies
Multicellular eukaryotes depend on cell division for ... - Answer-Development from a
fertilized egg
Growth
Repair
Cell cycle - Answer-the life of a cell from formation to its own division
Genome - Answer-all the genetic material in an organism
Chromosomes - Answer-DNA and proteins; condensed
- must replicate for cell to split and replicate
Chromatin - Answer-DNA and proteins (histones); condensed
, Sister chromatids - Answer-one chromosome that makes a copy of itself
Cohesins - Answer-where the proteins in sister chromatids join together; in the
centromere reigon in DNA
Preparation for cell division - Answer-- DNA is replicated and the chromosomes
condensed
Eukaryotic cell division consists of... - Answer-mitosis
Cytokinesis
Cytokinesis - Answer-the division of the cytoplasm
Phases of the cell cycle - Answer-mitotic phase (M phase)
Interphase
Mitotic phase - Answer-mitosis and cytokinesis
Interphase - Answer-cell growth
Copying chromosomes for cell division
Repair before cell division
90% of cell cycle is in this phase
Parts of interphase - Answer-G1 phase
S phase
G2 phase
G1 - Answer-first gap
Cells grow for DNA replication
Some components like centrosomes replicate
S phase - Answer-synthesis/ replicate DNA
(for both daughter cells)
G2 - Answer-second gap
Cell grows more
Produce molecules for division
Prophase - Answer-- chromosomes condense/ become visible
- fibers come from centrosomes
- nuclear envelope breaks down
- centrosomes move to opposite poles
Prometaphase - Answer-- chromosomes condense more
-kinetochores appear at centrosomes
- mitotic spindle attach to kinetochores
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