Which one of the following is the main cause of cancer?
Correct answer: A. Mutation
- A. Mutation
- B. Controlled cell division
- C. Regulated mitosis
- D. Haploid division
Explanation
Cancer is caused by changes (mutations) to the DNA within cells. The DNA inside a cell is packaged into a large number of individual genes, each of which contains a set of instructions telling the cell what functions to perform, as well as how to grow and divide.Cancer arises from genetic mutations that disrupt a cell's normal growth and division, leading to uncontrolled proliferation and potential spread. These mutations can occur in proto-oncogenes, turning them into oncogenes that drive growth, or in tumor suppressor genes that lose their ability to slow or stop cell growth. DNA repair genes can also be affected, preventing the correction of other mutations, which accumulate over time.
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.