Cell theory, prokaryotic and eukaryotic cells, plant vs animal cell
- Match List - I with List - II.List - I: A. Centromere; B. Cilium; C. Cristae; D. Cell membraneList - II: I. Mitochondrion; II. Cell division; III. Cell movement; IV. Phospholipid BilayerChoose the correct answer from the options given below : Answer: 4. A-II, B-III, C-I, D-IV Centromere: cell division (II) Cilium: cell movement (III) Cristae: mitochondrion (I) Cell membrane: phosp... 1
- A specialised membranous structure in a prokaryotic cell which helps in cell wall formation, DNA replication and respiration is : Answer: 1. Mesosome Key idea: Mesosomes are infoldings of the plasma membrane in prokaryotes. They help in cell wall formation, DNA replicat... 1
- Given below are two statements:Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid.Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively… Answer: 1. Statement I incorrect but Statement II is true. Key idea: DNA is negatively charged because of its phosphate groups. Statement I... 1
- Which of the following statements about inclusion bodies is incorrect ? Answer: 2. These are involved in ingestion of food particles. Key idea: Inclusion bodies are non-membrane-bound reserve materials lying free... 1
- The concept of "Omnis cellula-e cellula" regarding cell division was first proposed by : Answer: 1. Rudolf Virchow Key idea: Rudolf Virchow proposed "Omnis cellula-e cellula" (new cells come from pre-existing cells) in 1855. Schl... 1