Cell Biology — Prelims Questions

Which of the following statements regarding prokaryotic and eukaryotic cells is/are correct? 1. Prokaryotic cells lack a true nucleus, while eukaryotic cells possess one. 2. Mitochondria and chloroplasts are present in prokaryotic cells but absent in eukaryotic cells. 3. Ribosomes in prokaryotic cells are generally larger (80S) than those in eukaryotic cells (70S). 4. Cell wall in plant cells is made of peptidoglycan, similar to bacterial cell walls. Select the correct answer using the code given below:

Consider the following cellular processes: 1. Glycolysis 2. Krebs cycle 3. Electron Transport Chain Which of the above processes occur in the mitochondria of a eukaryotic cell?

With reference to cell division, which of the following statements about Meiosis is/are correct? 1. It results in two diploid daughter cells genetically identical to the parent cell. 2. Crossing over occurs during Prophase I, leading to genetic recombination. 3. It is essential for growth, repair, and replacement of old cells. 4. It involves a single round of DNA replication followed by two successive cell divisions. Select the correct answer using the code given below:

Which of the following is NOT a characteristic feature of cancer cells?

Consider the following statements regarding CRISPR-Cas gene editing technology: 1. It allows precise modification of DNA sequences. 2. It utilizes a guide RNA to target specific DNA regions. 3. It is primarily used for 'gene knockout' but cannot introduce new genetic material. 4. Base editing and prime editing are advanced forms of CRISPR offering greater precision. Which of the statements given above are correct?