Sunday, July 26, 2009

Help with biochem hw please TY!?

7. Translation is the process whereby information carried by ________ is decoded and assembled into polypeptides


(proteins).


A. rRNA


B. mRNA


C. tRNA


D. nRNA





8. A DNA template having the base sequence - T-G-A- A-G-A- would produce an mRNA with a base sequence of :





A). A-C-T- T-C-T


B) A- A-G - T-G- -A-


C) T-G-A- A-G-A-


D) A-C-U -U-C-U





9. The base sequence of the strand of DNA complementary to the segment – T-G-G-C-A-A-C- is:





A) T-G-G-C-A-A-C


B) A-C-C-G-T-T-G


C) U-C-C-G-T-T-G


D) A-G-G-C-T-T-C





10. The bonds that link the base pairs in the DNA double helix are:


A. Nitrogen bonds


B. hydrogen bonds


C. oxygen bonds


D. carbon bonds

Help with biochem hw please TY!?
You should be studying instead of asking here! You'd be able to find the answers in your book quite easily. Please try to study the explanations instead of just copying the answers here...





7 -b mRNA is the MESSAGE that is carried and TRANSLATED into the amino acid sequence by tRNAs (with the help of rRNA) during translation





8 -d in DNA base pairing you always get DNAs A pairing with T, a T pairs with A, a G pairs with C, and a C pairs with G. When making RNA, the same rules apply, except that RNA uses Uracil instead of Thymine. So the DNAs A will pair with U in RNA, a T in DNA will pair with A, G with C, and C with G.





9 -b see above explanation with DNA base pairing





10 -b G-C bonding is stronger because it has 3 places where the hydrogen bonds occur, A-T bonding is a slightly weaker because it has 2 places where the hydrogen bonds hold


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