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

Which type of genetic test is used to detect chromosomal abnormalities associated with cancer?

  1. Karyotyping

  2. Polymerase Chain Reaction (PCR)

  3. Fluorescence In Situ Hybridization (FISH)

  4. Single Nucleotide Polymorphism (SNP) Array
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Karyotyping is a genetic test that analyzes the number and structure of chromosomes in a cell. It is used to detect chromosomal abnormalities, such as deletions, duplications, or translocations, which can be associated with the development of certain types of cancer.

Multiple choice

Which of the following is an example of a chromosomal disorder:

  1. Down syndrome

  2. Turner syndrome

  3. Klinefelter syndrome

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Down syndrome, Turner syndrome, and Klinefelter syndrome are all examples of chromosomal disorders.

Multiple choice

What is the term for the process by which cells lose their ability to divide and reproduce?

  1. Apoptosis

  2. Necrosis

  3. Senescence

  4. Mitotic Catastrophe
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Senescence refers to the process by which cells lose their ability to divide and reproduce, leading to the accumulation of non-functional cells in the body.

Multiple choice

What is the process by which a cell maintains its epigenetic modifications during cell division?

  1. Epigenetic Inheritance

  2. Genetic Imprinting

  3. Histone Modification

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

Epigenetic inheritance refers to the process by which epigenetic modifications are passed on from one generation of cells to the next during cell division.

Multiple choice

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

  1. Mitosis

  2. Meiosis

  3. Binary fission

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

Budding is not a type of cell division. Mitosis, meiosis, and binary fission are all types of cell division.

Multiple choice

Which of the following is NOT a type of cell cycle checkpoint?

  1. G1 checkpoint

  2. S checkpoint

  3. G2 checkpoint

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

M checkpoint is not a type of cell cycle checkpoint. G1 checkpoint, S checkpoint, and G2 checkpoint are all types of cell cycle checkpoints.

Multiple choice

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

  1. Mitosis

  2. Meiosis

  3. Binary fission

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

Budding is not a type of cell division. It is a process by which new cells are formed from existing cells.

Multiple choice

Which of the following is the basic unit of heredity?

  1. Gene

  2. Chromosome

  3. Cell

  4. Organism
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 or RNA molecule.

Multiple choice

What is the process by which cells divide to produce new 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 cells divide to produce two identical daughter cells.

Multiple choice

The process of cell division that results in two genetically identical daughter cells is called:

  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 of cell division that produces two genetically identical daughter cells.

Multiple choice

Which growth factor is involved in the regulation of the cell cycle?

  1. Epidermal growth factor (EGF)

  2. Platelet-derived growth factor (PDGF)

  3. Transforming growth factor-beta (TGF-beta)

  4. Fibroblast growth factor (FGF)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Transforming growth factor-beta (TGF-beta) is involved in the regulation of the cell cycle.

Multiple choice

Which of the following is NOT a common method for cell synchronization in cell culture?

  1. Serum starvation

  2. Double thymidine block

  3. Mitotic inhibitors

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

Temperature shock is not typically used for cell synchronization in cell culture. Serum starvation, double thymidine block, and mitotic inhibitors are more commonly employed methods.

Multiple choice

Which genetic condition is characterized by the presence of an extra copy of chromosome 21?

  1. Down syndrome

  2. Turner syndrome

  3. Klinefelter syndrome

  4. Angelman syndrome
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 and is associated with various physical and intellectual disabilities, including an increased risk of eye problems.

Multiple choice

Which genetic condition is characterized by the presence of an extra copy of the X chromosome?

  1. Klinefelter syndrome

  2. Turner syndrome

  3. Down syndrome

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

Klinefelter syndrome is caused by the presence of an extra copy of the X chromosome and is associated with various physical and intellectual disabilities, including an increased risk of eye problems.

Multiple choice

Which genetic condition is characterized by the presence of an extra copy of the Y chromosome?

  1. Klinefelter syndrome

  2. Turner syndrome

  3. Down syndrome

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

XYY syndrome is caused by the presence of an extra copy of the Y chromosome and is associated with various physical and intellectual disabilities, including an increased risk of eye problems.