Podcast
Questions and Answers
During which phase of the cell cycle does the nuclear envelope begin to dissolve, allowing the chromosomes to become visible?
During which phase of the cell cycle does the nuclear envelope begin to dissolve, allowing the chromosomes to become visible?
- Anaphase
- Prophase (correct)
- Metaphase
- Interphase
Which of the following accurately describes the difference between G1 and G2 phases of interphase in terms of DNA content?
Which of the following accurately describes the difference between G1 and G2 phases of interphase in terms of DNA content?
- DNA content is irrelevant in G1 and G2.
- G2 has twice the DNA content of G1. (correct)
- Both G1 and G2 have the same DNA content.
- G1 has twice the DNA content of G2.
A cell is observed to have chromosomes lined up at the equator of the cell, with spindle fibers attached to their centromeres. What phase of mitosis is this cell in?
A cell is observed to have chromosomes lined up at the equator of the cell, with spindle fibers attached to their centromeres. What phase of mitosis is this cell in?
- Telophase
- Anaphase
- Metaphase (correct)
- Prophase
Which of the following cellular processes is responsible for the division of the cytoplasm to form two daughter cells?
Which of the following cellular processes is responsible for the division of the cytoplasm to form two daughter cells?
What is the primary function of the centromere during mitosis?
What is the primary function of the centromere during mitosis?
Which of the following best describes the difference between chromatin and chromosomes?
Which of the following best describes the difference between chromatin and chromosomes?
In what stage of mitosis do the sister chromatids separate and move towards opposite poles of the cell?
In what stage of mitosis do the sister chromatids separate and move towards opposite poles of the cell?
A cell is observed to have two distinct nuclei, each containing a full set of chromosomes. What stage of mitosis has this cell recently completed?
A cell is observed to have two distinct nuclei, each containing a full set of chromosomes. What stage of mitosis has this cell recently completed?
Flashcards
Sister Chromatids
Sister Chromatids
Identical chromosomes created before cell division.
Centromere
Centromere
Area where chromatids of a chromosome are attached.
Interphase
Interphase
The cell's longest phase where it carries out routine functions.
Mitosis
Mitosis
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Cytokinesis
Cytokinesis
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Prophase
Prophase
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Anaphase
Anaphase
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G1 Phase
G1 Phase
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Study Notes
Sister Chromatids
- Two identical chromosomes formed before cell division.
Centrioles
- Cell organelle aiding in cell division, found only in animal cells.
Centromere
- Region where sister chromatids of a chromosome are joined.
Gap 1 (G1) Phase
- Cell performs routine functions, grows, and produces proteins/organelles.
Synthesis (S) Phase
- DNA replication occurs.
Cytokinesis
- Cytoplasm divides, creating two separate daughter cells.
Spindle Fibers
- Protein structures (made of microtubules) aiding in DNA division during cell division.
Cell Cycle
- Series of events for cell growth and division (cell's life cycle).
Mitosis
- Four-stage process of nuclear division.
Interphase
- Stage where the cell spends most of its life.
Anaphase
- Sister chromatids pulled to opposite ends of the cell.
Binary Fission
- Type of cell division used by prokaryotic cells.
DNA Replication (Prokaryotic Cell Division)
- First step in prokaryotic cell division.
Metaphase
- Chromosomes line up at the cell's equator.
Mitosis (Eukaryotic Cell Division)
- Type of cell division for eukaryotic cells.
Cell Division Reasons
- Growth, repair, and replacement.
Prophase
- Nuclear envelope begins to dissolve.
Telophase
- Two nuclei appear.
Chromatin
- DNA in a loose, uncondensed form during interphase.
Sister Chromatids (Prophase)
- Replicated, condensed chromosomes during prophase.
Mitosis Phases (Order)
- Prophase, Metaphase, Anaphase, Telophase (PMAT)
G1 vs. G2 (Cell Cycle)
- Differentiating G1 and G2 based on DNA amount: G1 has normal DNA, G2 has double the amount (DNA replicated)
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