LOVE Chapter 17 Questions - Research Paper Example

and Chapter 17 Questions Question RNA is different from DNA in the sense that the 5 carbon sugar is ribose not deoxyribose; the nitrogen base is uracil not thymine. Question 2.mRNA takes information from DNA to tRNA later on translate this information into codons making proteins.Question3.Translation is the process that converts an mRNA message into a polypeptide while transcription is the process of copying a sequence of DNA to produce a complementary strand of RNA. Question4. Transcription occurs in the nucleus of a eukaryotic cell while translation occurs in the cytoplasm.

They are separated by space because translation of the RNA occurs in the cytoplasm but DNA is only located in the nucleus so that is the only area where transcription can occur (Ruse 112-150). Question5. Codon is a 3-nucleotide sequence that codes for amino acids. The linear codon sequence and the linear amino acid have a 3-nucleotide to 1 amino acid correspondence. Question 6. The genetic code is redundant in the sense that some amino acids can be specified by more than one codon but Ambiguous in the sense that each codon specifies a particular amino acid and only that amino acid.

Question 7.It just means that life appeared only once on Earth and was the basis of DNA into RNA. Question8. Transcription is the process in which DNA is converted into a complementary RNA and Just Before transcription, the splicing of introns occurs. Elongation in transcription occurs when additional RNA nucleotides are added to the growing nucleotide chain by RNA polymerase. Question9. Ribosomal RNA is helpful in constituting the protein synthesis. Question10. mRNA stands for messenger RNA, tRNA stands for transfer RNA, rRNA stands for ribosomal RNA, it is the main component of ribosome that synthesis protein.

Question 11. It has ribosome that brings tRNA molecule together with it which then bonds to this mRNA strand and releases the amino acid attached (Morowitz 179).Question12. This a clover shaped, single strand molecule. It has loops formed from the base pairing of complementary bases. Question13. Translation is performed by cytoplasmic ribosomes as well as those bounded to the ER. mRNA associates with the ribosomes and begins with bases that serve as a binding site. Question14. It refers to the sequence of amino acids in a polypeptide and the combination of multiple polypeptides to form a functional protein.

Question15. Amino acids found at the start of a protein being coded by the ribosome alerts the ribosome to attach itself to the ER. If the sequence is missing it will remain free. Question16. Proteins that are targeted for particular places in the cell contain short peptides, often at one end of the protein that are called signal peptides or transit peptides. Question17. Eukaryotic cells have a nucleus and prokaryotic cells do not. Question18. Introns are non coding segments of nucleic acid that lie between coding regions on other hand Splicing occurs when the introns are cut out of the initial length to transcribe and translate the portion that will code for used information Works cited Morowitz, Harold.

Energy Flow in Biology. New York: Academic Press,1968.Print. Ruse, Michael. The Philosophy of Biology. London: Hutchinson, 1973.Print.