Тест: Cell Cycle and Division Fundamentals — 6 въпроса

1. If a cell is actively producing gametes during reproduction, which cell type is it most likely to be?

A. Muscle cell

B. Somatic cell

C. Germinal lineage cell

D. Neuron

Answer: (C)

Обяснение

Germinal lineage cells are involved exclusively in gametogenesis, which produces gametes like sperm and ovocytes, making them the most likely cell type to be actively producing gametes during reproduction.

2. Which statement matches the topic "Phases and events of interphase in the cell cycle"?

A. Gametes are specialized sexual cells, specifically ovocytes and spermatozoa, produced by germinal lineage cells through gametogenesis

B. Somatic cells are all body cells capable of division that are neither germinal (sexual) cells nor gametes. They include any cell in the body that can undergo mitosis

C. Interphase : A phase of the cell cycle that includes G1, S, and G2 phases, during which the cell grows and prepares for division

D. Germinal lineage cells are the precursor cells that give rise to gametes. They are involved exclusively in gametogenesis, which occurs only in gonads such as ovaries and testicles

Answer: (C)

Обяснение

This statement comes directly from the course section dedicated to this topic: Interphase : A phase of the cell cycle that includes G1, S, and G2 phases, during which the cell grows and prepares for division.

3. What is the main characteristic of cytokinesis in cell division?

A. It only occurs in germinal cells during gametogenesis

B. It results in the formation of two separate daughter cells

C. It involves the division of the nucleus into four phases

D. It occurs before nuclear division begins

Answer: (B)

Обяснение

Cytokinesis is characterized by the division of the cytoplasm after nuclear division, leading to two separate daughter cells.

4. What is a key feature of the metaphase/anaphase checkpoint in the cell cycle?

A. It checks for DNA damage before DNA synthesis

B. It controls the segregation of chromosomes during cell division

C. It regulates the exit from mitosis to cytokinesis

D. It ensures DNA replication is complete before entering mitosis

Answer: (B)

Обяснение

The metaphase/anaphase checkpoint controls the segregation of chromosomes during cell division, ensuring proper chromosome distribution.

5. Which statement matches the topic "Comparative features of mitosis and meiosis"?

A. Somatic cells are all body cells capable of division that are neither germinal (sexual) cells nor gametes. They include any cell in the body that can undergo mitosis

B. Cellules filles : cellular units produced through division processes that are either genetically identical or diverse, depending on the type of division

C. Germinal lineage cells are the precursor cells that give rise to gametes. They are involved exclusively in gametogenesis, which occurs only in gonads such as ovaries and testicles

D. Gametes are specialized sexual cells, specifically ovocytes and spermatozoa, produced by germinal lineage cells through gametogenesis

Answer: (B)

Обяснение

This statement comes directly from the course section dedicated to this topic: Cellules filles : cellular units produced through division processes that are either genetically identical or diverse, depending on the type of division.

6. What is the main biological role of mitosis as described in the source?

A. Facilitating genetic recombination during reproduction

B. Supporting tissue growth and cell renewal

C. Generating genetic diversity in gametes

D. Reducing chromosome number in reproductive cells

Answer: (B)

Обяснение

Mitosis supports tissue growth, cell renewal, and the maintenance of physiological cell populations by producing two genetically identical and diploid (2n) daughter cells.