Bio 101 answer check/help please~!!?

Hi everyone~! Questions I have here are 8 unsolved left over multiple questions and 5 partly solved matching questions out of 100 questions from biology 101 class. I am confused and I can鈥檛 find the definite answer. So please help. Please check my answers and also help me on ones I couldn鈥檛 answer. You don鈥檛 have to answer all, but please do ones you know for sure. Thank you very much in advance~!





1)Transcription starts at a region of DNA called a(n)


a. sequencer. b. promoter. c. activato鈥?br>

2)In correct order, the three stages of translation are


a. initiation, replication, and termination.


b. elongation, peptide bond formation, and codon-anticodon pairing.


c. initiation, chain elongation, and termination.


d. termination, initiation, and replication.


e. none of these


3)A polysome is


a. one of the units of a ribosome.


b. the nuclear organelle that synthesizes RNA.


c. an organelle that functions similarly to a ribosome during meiosis.


d. the two units of a ribosome considered together.


e. an mRNA molecule with several ribosomes attached.


4)A gene mutation


a. is a change in the nucleotide sequence of DNA.


b. may be caused by environmental agents.


c. may arise spontaneously.


d. can occur in any organism.


e. all of these


5)Four of the five choices listed below are different forms of a class of nucleic acids. Select the exception.


a. template b. ribosomal c. messenger 鈥?br>

6)Four of the five pairings listed below are related. Select the exception.


a. double-stranded DNA -- messenger RNA d. small subunit -- large subunit


b. purine -- pyrimidine e. promoter -- terminator


c. codon 鈥?anticodon


7)Four of the five subunits listed below are components of a nucleotide. Select the exception.


a. pentose sugar c. pyrimidine e. purine


b. amino acid d. phosphate group


8)Four of the five choices listed below are steps in translation. Select the exception.


a. initiation d. termination


b. replication e. ribosomal subunit binding


c. chain elongation





Matching





The following questions refer to the five RNA codons listed below:


a. AUG


b. UAA


c. UUU


d. UUA


e. AAA








____B 26. This codon terminates a coding region.





____C 27. The anticodon AAA pairs with this codon.





____ 28. A single mutation involving the second letter of codon AUA could convert it to this codon.





____B 29. A DNA codon of ATT is complementary to this RNA codon.





____ 30. This codon codes for an amino acid and indicates the beginning of a coding region.|||Hi





I think these are the answers to your questions:


1. b


2. c


3. e


4. e


5. ??


6. a


7. b


8. b.





26. d


27. c


28. e


29. b


30. a





hope it helps:)|||5. a





It's transfer, not template