Discussion
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- Question
Which component in tobacco makes it harmful for human consumption?
Options- A. Morphine
- B. Nicotine
- C. Heroin
- D. None of these
- Correct Answer
- Nicotine
- 1. Which of the following are longest cells of human body?
Options- A. Pancreatic cells
- B. Epethelial cells
- C. Nerve cells
- D. Epidermal cells Discuss
- 2. Where the mature sperm are produced?
Options- A. Scrotum
- B. Vas deferens
- C. Prostate gland
- D. Testes Discuss
- 3. In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells
Options- A. there is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumors
- B. controlled cell divisionand over-production of genetic material occur
- C. RNA is mutated and produced in less amount
- D. DNA is mutated and produced in less amount Discuss
- 4. Nodes of Ranvier are microscopic gaps found within:
Options- A. osteoblasts
- B. gland cells
- C. chondroblasts
- D. myelinated axons Discuss
- 5. Which best describes a tetrad?
Options- A. A diploid cell
- B. Two gametes
- C. Four chromatids
- D. A haploid cell Discuss
- 6. Which of the following bacteria is responsible for the formation of curd?
Options- A. Lycopodium
- B. Yeast
- C. Lacto-bacillus
- D. Fungus Discuss
- 7. Which among the following is/are female hormones? (i) Estrogen (ii) Progesterone (iii) Testosterone
Options- A. (i) and (iii)
- B. (i) and (ii)
- C. (ii) and (iii)
- D. Only (iii) Discuss
- 8. Which among the following is used to treat Indigestion?
Options- A. Antacid
- B. Antiseptic
- C. Analgesic
- D. Antibiotic Discuss
- 9. When a Cuttlefish is described as a Molluscs, it is at which level of classification?
Options- A. Class
- B. Order
- C. Family
- D. Phylum Discuss
- 10. Ringworm is a disease caused by
Options- A. Fungi
- B. Bacteria
- C. Virus
- D. Flies Discuss
Biology problems
Search Results
Correct Answer: Nerve cells
Correct Answer: Testes
Correct Answer: there is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumors
Explanation:
In cancer cells, there is breakdown of these regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancer cells appears to have lost this property. As a result of this, cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant.
Correct Answer: myelinated axons
Correct Answer: Four chromatids
Correct Answer: Lacto-bacillus
Correct Answer: (i) and (ii)
Correct Answer: Antacid
Correct Answer: Phylum
Correct Answer: Fungi
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