The structure labeled A in figure is called the:
Correct answer: B. Centromere
- A. Sister chromatid
- B. Centromere
- C. Centriole
- D. Chromosome
Explanation
The centromere is a specialized region of a chromosome that plays a crucial role in cell division. It serves as the attachment point for spindle fibers during mitosis and meiosis, facilitating the movement of chromosomes to opposite poles of the cell. Additionally, the centromere is essential for ensuring proper segregation of genetic material, as it helps hold sister chromatids together until they are separated during cell division. Its structure and function are critical for maintaining genomic stability and integrity.
Last updated
About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.