27. C. When ribosome encounter a stop signal translation stops.
28. D. The numerical notation for the correct reading frame is +1.
29.B . Chaperones are responsible for the correct folding of nascent proteins.
30.B. the primary structure of proteins tells about the sequence of amino acids in protein.
lation stops when the ribosome A) Runs into a repressor protein B) Becomes stuck on an...
21. Double helix22. Repressor protein23. Adenine24. Ribosome.25. Promoter26. Replication27. RNA Polymerase.28. CodonA. Enzyme that synthesizes RNAB. Organelle where proteins are assembledC. Complementary to either Thymine or UracilD. mRNA sequence that codes for one amino acidE. Shape of double stranded DNAF. Sequence of DNA that controls gene expressionG. binds an operator and stops gene expression in LAC operon by preventing RNA polymerase from binding gene and transcribing. H. Duplication of DNA in 5 phase of Interphase
QUESTION 1 To study how proteins fold, scientists must be able to purify the protein of interest, use solvents like urea to denature the folded protein, and observe the process of refolding at successive time points. What is the effect of the solvents used in the denaturation process? a. The solvents break all noncovalent interactions. b. The solvents break all covalent interactions. c. The solvents create a new folded conformation. d. The solvents break some of the noncovalent interactions, resulting...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and collagen. c)are usually water soluble. d)aggregate in aqueous media. e)are often made of β-pleated sheet and α-helix sections wrapped into compact structures. 2) Select all that apply. The Bohr effect: a)depends on the atomic orbital structure of hydrogen. b)can be summarized as a reduction in the oxygen affinity of hemoglobin with decreasing pH. c)is explained by the protonation of key amino acids, including the...
9. Alpha-helices and B-pleated sheets are both examples of a. primary structure. b. secondary structure. c. tertiary structure. d. quaternary structure. 14. The most common moti uispersion forces nost common motifs for this level of structure are the helix and the B- pleated sheet a. primary structure b. secondary structure c. tertiary structure d. quaternary structure e. both secondary and tertiary of a protein. 15. The amino acid sequence is the a. primary structure b. secondary structure c. tertiary structure...
#59) During protein synthesis, what happens to the ribosome? A) attach to the mRNA molecule and travel along its length B) attach to the DNA molecule and travel along its length to produce an mRNA molecule C) Translate mRNA into tRNA D) Transcribe mRNA to tRNA E) Translate mRNA into DNA #60) if you digested the human genome (3 billion bp) with a 7-cutter restriction enzyme, approximately how many fragments would you get? A) 511461 B)183105 C)16384 D)88 E) None...
21. Which of the following would NOT change the structure and function of a protein A Methylation of a protein B. Lipid modification of a protein C Change in the length of the Poly A tail of the mRNA transcript encoding a protein D. Change in the position of reactive amino acids E. Proteolysis 22. Two peptides have almost the exact same primary structure, except that one has about 10 fewer amino acids at the amino-terminus (N-terminus) of the protein....
Table 1B: Protein Synthesis with 2nd DNA Template Strand DNA Codons in the 2nd Template Strand mRNA Sequence (List codons) Amino Acids in the Protein **Use the Genetic Code Chart on page 217 to determine the amino acids that will be placed in the protein Questions: 19. The three letter "code words of DNA and RNA that specify amino acids are called: A. codons B. promoters C. Introns D. anticodons 20. Proteins are composed of building blocks called: A. fatty...
6.) Provide short answers for the questions about protein structure below: a.) True or False, amino acid sequence defines the native structure of protein. b.) What is the main type of bonding responsible for stabilizing the secondary structure of proteins? c.) Briefly discuss the thermodynamics of protein folding into its native 3D structure. Is this process enthalpy driven or entropy driven? d.) Give an example of 2 major secondary structural motifs found in polypeptides. Do any of these motifs appear...
Question 51 (1 point) The lactose repressor protein a) is activated by binding lactose b) is inactivated by binding lactose C) is transcribed with the structural lac genes d) requires lactose for its transcription e) None of the choices are correct.