6. What are three differences between mRNA and DNA? 7. Where is DNA found in the

Question

6. What are three differences between mRNA and DNA? 7. Where is DNA found in the cell? Where is mRNA made in the cell? In what part of the cell (the location) are proteins made? 8. List the three types of RNA and briefly describe what they do. 9. What is the mRNA strand that is complementary to the following segment of DNA: ACCGCTT TAA Mark one nucleotide. 10. Methionine is the first amino acid in almost all proteins for all organisms on earth? True or False 11. Is methionine used in transcription, translation, or both?

Explanation / Answer

Answer:

1.

DNA __T G A_

mRNA__ A C U

tRNA _U G A__

AA _Threonine_______

2. DNA __T A C__

mRNA _A U G______

tRNA _U A C_______

AA __Methionin_______

3.

DNA: C A C

mRNA: G U G

tRNA: C A C

AA: Valine

4. DNA _TCT__

mRNA__ AGA__

tRNA __UCU___

AA ARG

6.

7. The DNA found in the nucleus of cell.

The mRNA made in nucleus.

The proteins are made in cytoplsm.

8. List the three types of RNA

mRNA= It encodes amino acid sequence of a polypeptide

tRNA=It brings amino acids to ribosomes during translation

rRNA=It helps in the synthesis of ribosomes, which helps in protein synthesis

9.

DNA: ACC GCT TTA A

mRNA: UGG CGA AAU U

AA: Trp- Arg- Asn

10. True

11. The methionine is used in translation.

mRNA DNA Single stranded Double stranded Nitrogen bases are adenine, guanine, uracil & cytosine Nitrogen bases are adenine, guanine, thymine & cytosine Ribose sugar Deoxyribose sugar

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