Podcast
Questions and Answers
What happens during prophase in mitosis?
What happens during prophase in mitosis?
- The nuclear membrane is formed around the chromosomes.
- Sister chromatids are separated to opposite poles.
- Chromatin condenses to form visible chromosomes. (correct)
- Chromosomes become less visible and diffuse.
What is the role of spindle fibers during mitosis?
What is the role of spindle fibers during mitosis?
- To assist in the division of the cell's cytoplasm.
- To move chromosomes to opposite sides of the cell. (correct)
- To transport nutrients to the chromatin.
- To dissolve the nuclear membrane.
Which of the following occurs during telophase?
Which of the following occurs during telophase?
- Nuclear membrane dissolves.
- Chromosomes are first formed.
- Sister chromatids separate and move to opposite poles.
- Cytoplasm begins to divide. (correct)
What describes the state of chromosomes immediately following mitosis?
What describes the state of chromosomes immediately following mitosis?
At which phase do chromosomes align in the center of the cell during mitosis?
At which phase do chromosomes align in the center of the cell during mitosis?
What is the main purpose of microvilli on cells?
What is the main purpose of microvilli on cells?
What occurs during the G2 phase of the cell cycle?
What occurs during the G2 phase of the cell cycle?
Which of the following best describes the chromosome structure of human body cells?
Which of the following best describes the chromosome structure of human body cells?
What happens to chromatids during anaphase?
What happens to chromatids during anaphase?
Which cellular structures are responsible for active movement?
Which cellular structures are responsible for active movement?
How many chromosomes does a human sperm or egg cell contain?
How many chromosomes does a human sperm or egg cell contain?
What role do spindle fibers play during cell division?
What role do spindle fibers play during cell division?
What is the relationship between chromosome movement and the cell cycle?
What is the relationship between chromosome movement and the cell cycle?
What are the two major phases of the cell cycle?
What are the two major phases of the cell cycle?
During which phase does DNA replication occur?
During which phase does DNA replication occur?
Which cellular structure is primarily responsible for the movement of materials over the surface of cells?
Which cellular structure is primarily responsible for the movement of materials over the surface of cells?
What are flagella primarily known for?
What are flagella primarily known for?
Which of the following accurately describes microvilli?
Which of the following accurately describes microvilli?
Which phase of interphase is characterized by cellular growth and normal metabolic activity?
Which phase of interphase is characterized by cellular growth and normal metabolic activity?
What distinguishes cilia from flagella in terms of structure?
What distinguishes cilia from flagella in terms of structure?
What happens during the interphase of the cell cycle?
What happens during the interphase of the cell cycle?
Flashcards are hidden until you start studying
Study Notes
Cell Structure and Function
- Microvilli are extensions of the cell membrane that increase surface area for absorption, especially abundant in intestinal and kidney cells.
- Cilia are hair-like structures that facilitate the movement of materials over cell surfaces, such as mucus.
- Flagella are longer, whip-like structures, primarily found in sperm cells, responsible for propulsion.
Cell Genetic Content
- Each human somatic cell contains 23 pairs of chromosomes, totaling 46; sperm and egg cells each contain 23 chromosomes.
- The sex chromosomes determine gender: XX for female, XY for male.
The Cell Cycle
- The cell cycle consists of interphase (non-dividing phase) and mitosis (dividing phase).
- Interphase includes G1 phase (normal metabolic activity), S phase (DNA replication), and G2 phase (preparation for division).
- Mitosis is split into four phases: prophase, metaphase, anaphase, and telophase.
Mitosis Phases
- Prophase: Chromatin condenses into visible chromosomes; spindle fibers form and the nuclear membrane dissolves.
- Metaphase: Chromosomes align at the cell's equator; spindle fibers attach to kinetochores.
- Anaphase: Chromatids separate and move toward opposite poles of the cell.
- Telophase: Chromosomes de-condense into chromatin; two nuclei form as the nuclear membrane re-establishes.
Intermediate Filaments and Centrioles
- Intermediate filaments are protein structures providing mechanical support, situated between the size of microtubules and microfilaments.
- Centrioles play a critical role in organizing spindle fibers during mitosis.
Cytokinesis
- Following telophase, the cytoplasm divides, resulting in two separate daughter cells, each with a complete set of chromosomes.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
