Chromosomes, Cell Cycle & Division Quiz - ICSE Class 10 Biology
Free practice quiz: Chromosomes, Cell Cycle & Division (ICSE Class 10 Biology). 50 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
This ICSE Class 10 Biology practice quiz has 50 multiple-choice questions on Chromosomes, Cell Cycle & Division, and 50 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.
Start quiz: 50 questions, freeSample questions
During which phase of the cell cycle does DNA replication occur?
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Answer: B. S phase
DNA replication, the process of duplicating the cell's genetic material, is the defining event of the S (synthesis) phase of the cell cycle.
Which phase of the cell cycle is characterized by cell growth and preparation for DNA replication?
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Answer: A. G1 phase
The G1 (Gap 1) phase is the first growth phase of the cell cycle, where the cell increases in size and synthesizes proteins and organelles in preparation for DNA replication.
A chromosome consisting of a single chromatid is said to be:
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Answer: B. Unduplicated
A chromosome typically consists of two identical sister chromatids joined at the centromere after DNA replication. An unduplicated chromosome has only a single chromatid.
Which event signifies the end of meiosis I and the beginning of meiosis II?
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Answer: C. Formation of two haploid cells
Meiosis I concludes with the formation of two haploid cells, each containing one chromosome from each homologous pair. These cells then proceed to meiosis II.
If a cell has 2n = 16 chromosomes, how many chromosomes will be present in a cell after meiosis?
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Answer: A. 8
Meiosis reduces the chromosome number by half. If a diploid cell has 16 chromosomes (2n=16), then after meiosis, the resulting haploid cells will have 8 chromosomes (n=8).
More questions in this quiz
Answers and explanations are in the full quiz.
- Which of the following is characteristic of metaphase in mitosis?
- An organism with a haploid number of chromosomes (n) undergoes mitosis. What is the chromosomal number of the daughter cells?
- What is the primary function of cytokinesis?
- Which statement accurately describes a chromosome?
- In meiosis I, homologous chromosomes pair up and exchange genetic material. This process is called:
- The centromere divides a chromosome into two arms. What are these arms called?
- Which phase of mitosis is characterized by the separation of sister chromatids?
- The total number of chromosomes in a human somatic cell is 46. How many chromosomes would be found in a human gamete?
- What is the primary difference between mitosis and meiosis?
- During meiosis II, sister chromatids separate. This process is similar to which phase of mitosis?
- A cell has 24 chromosomes. After mitosis, how many chromosomes will each daughter cell have?
- What is the role of centrioles in animal cell mitosis?
- When do homologous chromosomes separate during meiosis?
- Which term describes the number of sets of chromosomes in a cell?
- The G2 phase of the cell cycle is characterized by:
- What is the term for the specific region on a chromosome where spindle fibers attach during cell division?
- During telophase of mitosis, what events typically occur?
- What is the observable result of crossing over in meiosis?
- Which statement correctly describes the state of chromosomes during metaphase of mitosis?
- The purpose of meiosis is to produce:
- What is a karyotype?
- During which phase of the cell cycle does the cell grow and carry out its normal metabolic functions, but not divide?
- The centromeres of sister chromatids separate during which stage of meiosis?
- What is the term for chromosomes that are not sex chromosomes?
- Which type of cell division is responsible for the production of gametes in sexually reproducing organisms?
- During which phase of mitosis do chromosomes decondense and nuclear envelopes reform around them?
- What are chromatids that are joined at the centromere called?
- In the cell cycle, the interphase is followed by which phase?
- What is the role of the centromere in a chromosome?
- Which of the following is NOT a phase of mitosis?
- Homologous chromosomes are pairs of chromosomes that:
- The G1 checkpoint in the cell cycle primarily checks for:
- What is the ploidy of gametes produced by meiosis?
- Which phase is characterized by the reformation of the nuclear envelope around the separated chromosomes?
- During prophase I of meiosis, what is the structure formed by the synapsed homologous chromosomes?
- What is the term for the programmed cell death that is essential for normal development and tissue homeostasis?
- Which of the following represents a metacentric chromosome?
- What is the primary role of cyclin-dependent kinases (CDKs) in the cell cycle?
- A chromosome that has its centromere located very close to one end, resulting in one very short arm and one very long arm, is called:
- Which phase of mitosis is characterized by the complete breakdown of the nuclear envelope?
- The number of chromosomes in a human gamete is represented by:
- What is the term for the entire set of chromosomes in a cell at a specific stage of the cell cycle?
- Which of the following is a characteristic of telophase II in meiosis?
- The cell cycle is regulated by a complex interplay of proteins. Which protein type directly controls the progression of the cell cycle by activating or inhibiting other proteins?
- Which of the following accurately describes the composition of a chromosome after DNA replication and before cell division?
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