Biology

Cell Cycle and Chromosomes

1,219 Questions

Explore a curated list of questions covering the cell cycle, mitosis, and meiosis. Topics include DNA replication, chromosomal structures, and genetic disorders. This material is essential for students preparing for biology and general science competitive exams.

Cell cycle eventsDNA replicationMeiosis processChromosomal structuresGenetic disorders

Cell Cycle and Chromosomes Questions

Multiple choice

What is the fundamental unit of heredity?

  1. Gene

  2. Chromosome

  3. DNA

  4. Protein
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A gene is the fundamental unit of heredity and is a region of DNA that codes for a specific protein.

Multiple choice

Which term describes the physical location of a gene on a chromosome?

  1. Genotype

  2. Phenotype

  3. Allele

  4. Locus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Locus refers to the specific location of a gene on a chromosome.

Multiple choice

What is the term used to describe the process by which a cell divides into two identical daughter cells?

  1. Mitosis

  2. Meiosis

  3. Binary fission

  4. Budding
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mitosis is the process by which a cell divides into two identical daughter cells. This process is essential for the growth and development of organisms.

Multiple choice

Which of the following is not a phase of mitosis?

  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prophase, metaphase, and anaphase are all phases of mitosis. Telophase is a phase of meiosis, not mitosis.

Multiple choice

What is the term used to describe the process by which a cell divides into four haploid daughter cells?

  1. Mitosis

  2. Meiosis

  3. Binary fission

  4. Budding
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Meiosis is the process by which a cell divides into four haploid daughter cells. This process is essential for sexual reproduction.

Multiple choice

Which of the following is not a phase of meiosis?

  1. Prophase I

  2. Metaphase I

  3. Anaphase I

  4. Telophase I
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prophase I, metaphase I, and anaphase I are all phases of meiosis. Telophase I is a phase of mitosis, not meiosis.

Multiple choice

What is the name of the process by which cells divide?

  1. Mitosis

  2. Meiosis

  3. Cytokinesis

  4. Karyokinesis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mitosis is the process by which cells divide. It is a continuous process that consists of four distinct stages: prophase, metaphase, anaphase, and telophase.

Multiple choice

Which of the following is NOT a type of cell division?

  1. Binary fission

  2. Budding

  3. Fragmentation

  4. Sporulation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sporulation is not a type of cell division, but rather a process by which some microorganisms produce spores.

Multiple choice

Which of the following genes is associated with Down syndrome?

  1. Trisomy 21

  2. Trisomy 18

  3. Trisomy 13

  4. Monosomy X
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Down syndrome is caused by the presence of an extra copy of chromosome 21, known as trisomy 21.

Multiple choice

What is the basic unit of heredity?

  1. Gene

  2. Chromosome

  3. Nucleotide

  4. Protein
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A gene is a region of DNA that codes for a specific protein. Proteins are the building blocks of cells and are responsible for a wide range of functions, including metabolism, growth, and reproduction.

Multiple choice

What is the difference between mitosis and meiosis?

  1. Mitosis produces two identical daughter cells, while meiosis produces four daughter cells that are genetically different from each other.

  2. Mitosis produces four daughter cells that are genetically identical to each other, while meiosis produces two daughter cells that are genetically different from each other.

  3. Mitosis produces two daughter cells that are genetically different from each other, while meiosis produces four daughter cells that are genetically identical to each other.

  4. Mitosis produces four daughter cells that are genetically different from each other, while meiosis produces two daughter cells that are genetically identical to each other.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mitosis is a type of cell division that produces two identical daughter cells. Meiosis is a type of cell division that produces four daughter cells that are genetically different from each other.

Multiple choice

What is the term for the process of moving a gene from one chromosome to another?

  1. Transposition

  2. Transduction

  3. Transformation

  4. Conjugation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Transposition is the process of moving a gene from one chromosome to another.

Multiple choice

What is the term for the process by which a cell divides to produce two identical daughter cells?

  1. Differentiation

  2. Proliferation

  3. Migration

  4. Determination
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Proliferation is the process by which a cell divides to produce two identical daughter cells, increasing the number of cells in an organism.

Multiple choice

The process by which cells divide into two identical daughter cells is called:

  1. Mitosis

  2. Meiosis

  3. Cytokinesis

  4. Binary fission
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mitosis is the process by which cells divide into two identical daughter cells. It is a continuous process that can be divided into four stages: prophase, metaphase, anaphase, and telophase.

Multiple choice

The process by which cells divide into four haploid daughter cells is called:

  1. Mitosis

  2. Meiosis

  3. Cytokinesis

  4. Binary fission
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Meiosis is the process by which cells divide into four haploid daughter cells. It is a two-stage process that involves two rounds of division: meiosis I and meiosis II.