Biology questions
20584 published questions with worked solutions.
- What is it that forms the basis of DNA fingerprinting?
- Match the column A and column B and find the correct option Column-I: (A) RNA polymerase-I; (B) RNA polymerase-II; (C) RNA...
- Match the following RNA with their functions Column-I: (A) m-RNA; (B) r-RNA; (C) t-RNA Column-II: (p) Carries activated amino...
- Match the column I with column II and select the correct option from the following Column-I: (A) Griffith (1928); (B) Avery,...
- Which one of the following techniques has helped to solve many mysteries involving murders, robberies and rapes?
- Biochemical nature of the Griffith's experiment was firstly determined by
- Stability as one of the properties of genetic material was very evident in Griffith _____A_____ itself that heat which killed the...
- The DNA from the bacteriophage 174 has a base composition of 25 % A, 33% T, 24% G and 18% C, which of the following best explains...
- Consider the functions of following enzymes and their roles in replication of DNA and identify the incorrect statement.
- In prokaryotes, the process of replication is catalysed by the following enzymes. Identify which of the enzymes best coordinate...
- When the DNA replication starts, the
- In Meselson and Stahl's experiment, DNA extracted from the culture one generation after the transfer from ^ 15 N to ^ 14 N medium...
- After transcription, a primary transcript of RNA, complementary to DNA is released. What would not be the most likely fate of...
- RNA primer is must for initiation of DNA duplication as it
- Consider the following statements. In eukaryotes, 1. RNA polymerase-I transcribes rRNAs 2. RNA polymerase-II transcribes snRNAs...
- E.coli cells with a mutated z-gene of the Lac operon cannot grow in medium containing only lactose as the source of energy because
- Identify correct statement regarding translation and select the correct option.
- Choose the wrong statement in the process of protein synthesis.
- Following are the stages in the cellular synthesis of a protein. 1. Movement of mRNA from the nucleus to cytoplasm. 2. Linking of...
- Which one of the following statement is not correct during protein synthesis?