1. The phrase ‘bite the bullet’ means-
A. eating quicklyB. facing a difficult situation bravelyC. avoiding a problemD. making a hasty decision
2. Internal respiration-
A. Not affected by enzymesB. Produces a specific amount of energyC. Is a physiochemical processD. None
3. What is the oxidation number of Cr in [Cr(H2O)4Cl2]Br?
A. +3B. +2C. +6D. −4
4. What is the function of DNA helicase?
A. Proof readingB. Unwinding DNA double helixC. DNA replicationD. Removing primer from chain
5. Members of which phylum are all marine?
A. EchinodermataB. ArthropodaC. AnnelidaD. Nematoda
6. and are two vectors. What is the value of 'a' when the two vectors are perpendicular to each other? →
A. = ˆi + 2ˆj →B. = aˆi − 2ˆjC. 4D. 8