Podcast
Questions and Answers
A cell is exposed to a chemical that disrupts the function of the spindle fibers during cell division. At which stage of mitosis would the cell cycle likely be arrested?
A cell is exposed to a chemical that disrupts the function of the spindle fibers during cell division. At which stage of mitosis would the cell cycle likely be arrested?
- Anaphase
- Metaphase (correct)
- Telophase
- Prophase
How do stem cells contribute to the repair of damaged tissue?
How do stem cells contribute to the repair of damaged tissue?
- By directly replacing damaged cells with fully differentiated cells of the same type.
- By migrating to the damaged area and fusing with existing cells to repair them.
- By dividing and differentiating into the specific types of cells needed to repair the tissue. (correct)
- By secreting chemicals that stimulate nearby cells to divide rapidly and fill the damaged area.
Which statement accurately describes the relationship between DNA, nucleotides, and chromosomes?
Which statement accurately describes the relationship between DNA, nucleotides, and chromosomes?
- Nucleotides are the building blocks of DNA, and DNA is organized into chromosomes. (correct)
- Chromosomes are made of nucleotides, which are sequences of DNA.
- DNA is made of chromosomes, which are composed of nucleotides.
- Nucleotides are composed of chromosomes, which form the structure of DNA.
During DNA replication, which enzyme is primarily responsible for adding new nucleotides to the growing DNA strand?
During DNA replication, which enzyme is primarily responsible for adding new nucleotides to the growing DNA strand?
What is the primary role of DNA helicase in DNA replication?
What is the primary role of DNA helicase in DNA replication?
A scientist is using PCR to amplify a specific DNA sequence. What key component is needed in the PCR reaction to target and amplify only the desired sequence?
A scientist is using PCR to amplify a specific DNA sequence. What key component is needed in the PCR reaction to target and amplify only the desired sequence?
Why is it important for DNA replication to occur before cell division?
Why is it important for DNA replication to occur before cell division?
During which phase of the cell cycle does DNA replication primarily occur?
During which phase of the cell cycle does DNA replication primarily occur?
In a sample of DNA, 20% of the bases are Adenine. Based on base pairing rules, what percentage of the bases are Guanine?
In a sample of DNA, 20% of the bases are Adenine. Based on base pairing rules, what percentage of the bases are Guanine?
Compared to DNA replication in cells, what is a key difference of PCR?
Compared to DNA replication in cells, what is a key difference of PCR?
Flashcards
Cell Cycle
Cell Cycle
The series of events that take place in a cell leading to its division and duplication.
Interphase
Interphase
The stage in the cell cycle when the cell is not dividing. The cell grows and copies its DNA.
Mitosis
Mitosis
A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
Cytokinesis
Cytokinesis
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PMAT
PMAT
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Chromosomes
Chromosomes
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Stem Cells
Stem Cells
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Specialized Cells
Specialized Cells
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Nucleotides
Nucleotides
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DNA Replication
DNA Replication
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Study Notes
- The cell cycle includes Interphase, Mitosis, and Cytokinesis.
- Mitosis involves four main phases: Prophase, Metaphase, Anaphase, and Telophase (PMAT).
- Chromosomes play an important role in cell division
DNA Structure
- DNA's structure helps it replicate.
- DNA is related to nucleotides.
- Use base pairing rules to determine complementary DNA strands.
DNA Replication/Synthesis
- DNA Replication involves four main steps.
- PCR is to be compared and contrasted to DNA Replication.
- DNA Replication is important.
- PCR can be used by scientists.
- DNA replication makes a daughter DNA molecule made of 1 old strand and 1 new strand.
Vocabulary
- Cells can be somatic or sex cells
- DNA
- Nucleotide
- Deoxyribose, Phosphate, & Nucleotide Base
- Adenine, Guanine, Cytosine, & Thymine
- Hydrogen and covalent bonds
- Base Pairing Rules
- DNA Replication/Synthesis
- DNA Helicase, DNA Polymerase
- PCR
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Description
This lesson covers all the components of the cell cycle, including interphase, mitosis, and cytokinesis. It also includes detailed information about DNA's structure and replication. Key vocabulary is reviewed, including chromosomes, DNA, nucleotides, and the base pairing rules.
