Which type of bond must be broken for a beta sheet to unfold? a) Ionic bonds b)

Question

Which type of bond must be broken for a beta sheet to unfold? a) Ionic bonds b) Polar Covalent bonds c) Hydrogen bonds d) Both hydrogen and polar covalent bonds It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information in which of the following? a) Phosphate-sugar backbone b) Sequences of bases c) Complementary pairing of bases d) side groups of nitrogenous bases 3'-TAGTCTACAGGGTAAATCATG-5' 5'-ATCAGATGTCCCATTTAGTAC-3' if a gene promoter is located to the LEFT of the DNA sequence above, what is the mRNA sequence formed during transcription? a) 5'-ATCAGATGTCCCATTTAGTAC b) 5'-AUGUCCCAUUUAGUAC c) 5'-AUCAGAUGUCCCAUUUAGUAC d) 5'-GUACUAAAUGGGACAUCUGAU You are studying a gene with three You analyze the transcript from a mutant gene and obtain the result shown to the right. Which of the following could NOT have produced these results? a) A mutation in the intron 1 acceptor size that values non-functioning b) Alternative splicing c) Loss of the 3-UTR d) A mutation in the intron 2 branch size that in non-operable Which of the following is characteristic feature of a carrier protein in a plasma membrane? a) It exhibits a specificity for particular type of molecule b) It requires the expenditure of cellular energy to function c) It works against diffusion d) It has no hydrophobic regions When does the termination of translation take place? a) the end of the mRNA molecule reached b) the poly-A tail is reached c) the 5' cap is reached d) A stop codon is reached

Explanation / Answer

39) C. Hydrogen Bond

incorporation and free of heat when hydrogen bonds break and exterior.

40) B. Sequence of bases.

41) D. 5' - GUACUAAAUGGGACAUCUGAU.

42) D. A mutation in the intron 2 branch site that makes it non operable

43) A. They all exibit specificity for a particular type of molecule.

One all distribution of proteins have specificity which assist between the remarkable appeal of the membrane. For Example authority of indoors homeostasis and environs of the cellular without commanding, what's accessible out or in, this could't be discharged.

44) D. A stop codon is reached

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