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!?
Here are the answers: I will give you a brief idea of what is going on in each question. Even though I answered these questions for you, You should take the time to Understand what is going on.





7.) B: DNA within the nucleus is transcribed into mRNA. (go over the specific steps that occur within this stage. There is splicing occurring, caps being put on the pre mRNA and other steps as well). The mRNA contains the complement translation of the DNA. The ribosome translates each three DNA base set (called a codon) and "connects" it to an


anticodon on the tRNA. This of which releases the amino acid and a polypeptide start to fold.





8.) D: Thymine = Uracil in RNA only. (T = U) That is why D is the correct answer.





9.) B: DNA is read from a 5' to a 3' direction. So you have:


5' TGGCAAC 3'. The complementary strand is from 3' to 5'


3' ACCGTTG 5'.


That is why B is the correct answer.





10.) B: When DNA is needed to replicate in mitosis or during transcription of protein synthesis, it is important for the DNA to open "quickly." So, having hydrogen bonds will allow for quick separation of the DNA bases. You should also know that G-C has 3 bonded hydrogen bonds and A-T or U has 2 Hydrogen bonds.





Note: The information above is a brief idea of what is going on. You should read more about each topic and clearly understand what is going on.
Reply:B. mRNA





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





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





B. hydrogen bonds
Reply:7) B - mRNA


8) D - ACUUCU


9) B - ACCGTTG


10) B - Hydrogen bonds

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