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Questions and Answers
What best distinguishes living things from nonliving matter?
What best distinguishes living things from nonliving matter?
- Continuity of life
- Reproduction of cells (correct)
- Genetic material
- Cell division
What is the result of most cell division?
What is the result of most cell division?
- Genetically identical daughter cells (correct)
- Nonidentical daughter cells
- Packaging into chromosomes
- Tissue renewal
What does a genome consist of in prokaryotic cells?
What does a genome consist of in prokaryotic cells?
- Genetic material
- A single DNA molecule (correct)
- Multiple DNA molecules
- Nonidentical daughter cells
What is the main role of cell division in growth and development?
What is the main role of cell division in growth and development?
What are the phases of mitosis responsible for?
What are the phases of mitosis responsible for?
What distinguishes gametes from most other daughter cells?
What distinguishes gametes from most other daughter cells?
What is the characteristic number of chromosomes in each cell nucleus of eukaryotic species?
What is the characteristic number of chromosomes in each cell nucleus of eukaryotic species?
What do gametes (reproductive cells) have in comparison to somatic cells?
What do gametes (reproductive cells) have in comparison to somatic cells?
What is the narrow 'waist' of the duplicated chromosome called?
What is the narrow 'waist' of the duplicated chromosome called?
Meiosis yields daughter cells that have how many sets of chromosomes compared to the parent cell?
Meiosis yields daughter cells that have how many sets of chromosomes compared to the parent cell?
What is the main function of the S phase in interphase?
What is the main function of the S phase in interphase?
During which phase does DNA replicate in the cell cycle?
During which phase does DNA replicate in the cell cycle?
In a typical human cell, approximately how long is the DNA when fully extended?
In a typical human cell, approximately how long is the DNA when fully extended?
What occurs only if the cell is large enough and the DNA undamaged?
What occurs only if the cell is large enough and the DNA undamaged?
Which stage of mitosis includes the division of the cell nucleus?
Which stage of mitosis includes the division of the cell nucleus?
What is the regular pattern of growth, DNA replication, and cell division called?
What is the regular pattern of growth, DNA replication, and cell division called?
What distinguishes gametes from most other daughter cells?
What distinguishes gametes from most other daughter cells?
What is the regular pattern of growth, DNA replication, and cell division called?
What is the regular pattern of growth, DNA replication, and cell division called?
What occurs only if the cell is large enough and the DNA undamaged?
What occurs only if the cell is large enough and the DNA undamaged?
What is the main function of the S phase in interphase?
What is the main function of the S phase in interphase?
What best distinguishes living things from nonliving matter?
What best distinguishes living things from nonliving matter?
In a typical human cell, approximately how long is the DNA when fully extended?
In a typical human cell, approximately how long is the DNA when fully extended?
What is the main function of the S phase in interphase?
What is the main function of the S phase in interphase?
During which phase does DNA replicate in the cell cycle?
During which phase does DNA replicate in the cell cycle?
What occurs only if the cell is large enough and the DNA undamaged?
What occurs only if the cell is large enough and the DNA undamaged?
What do gametes (reproductive cells) have in comparison to somatic cells?
What do gametes (reproductive cells) have in comparison to somatic cells?
What distinguishes gametes from most other daughter cells?
What distinguishes gametes from most other daughter cells?
What is the result of most cell division?
What is the result of most cell division?
What best distinguishes living things from nonliving matter?
What best distinguishes living things from nonliving matter?
What is the narrow 'waist' of the duplicated chromosome called?
What is the narrow 'waist' of the duplicated chromosome called?
What does a genome consist of in prokaryotic cells?
What does a genome consist of in prokaryotic cells?
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Study Notes
Characteristics of Living Things
- Living things are distinguished from nonliving matter by their ability to grow, respond to stimuli, reproduce, metabolize, and maintain homeostasis.
Cell Division and Genome
- The result of most cell division is two daughter cells that are genetically identical to the parent cell.
- A prokaryotic cell's genome consists of a single circular chromosome.
Cell Cycle and Mitosis
- The main role of cell division in growth and development is to produce new cells that can differentiate into various cell types.
- The phases of mitosis are responsible for the equal separation of chromosomes into two daughter cells.
- The main function of the S phase in interphase is DNA replication.
- DNA replication occurs during the S phase of the cell cycle.
- Cell division occurs only if the cell is large enough and the DNA is undamaged.
- Mitosis is the stage of the cell cycle where the cell nucleus divides.
Gametes and Meiosis
- Gametes (reproductive cells) have half the number of chromosomes as somatic cells.
- Gametes are distinguished from other daughter cells by their unique genetic makeup and ability to fuse with other gametes during fertilization.
- Meiosis yields daughter cells that have half the number of chromosomes as the parent cell.
Chromosomes and DNA
- The characteristic number of chromosomes in each cell nucleus of eukaryotic species varies, but is typically diploid (2n).
- Gametes have half the number of chromosomes as somatic cells.
- The narrow 'waist' of the duplicated chromosome is called the centromere.
- In a typical human cell, the DNA is approximately 2 meters long when fully extended.
Cell Cycle Pattern
- The regular pattern of growth, DNA replication, and cell division is called the cell cycle.
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