Question 1Amyloid Precursor Protein (APP) is actually thought to be a natural neuroprotective agent induced by neuronal stress or injury.O TrueO FalseQuestion 2Which of the following is not a property of serine protease?A globular protein with high molecular weight● It is initially synthesized as a zymogenIt has uniquely activated tyrosine residue at the active siteCleaves polypeptide at a specific amino acid residueQuestion 3RTK is activated by cyclic AMP.O TrueFalse

A protein's biological function depends on its three-dimensional structure. The 3D structure is…

Answered: Question 1 Amyloid Precursor Protein…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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QUESTION 23 The pl of hen lysozyme is 11.0; the pl of hen ovalbumin is 4.6. An isoelectric focussing experiment is conducted. Which of these two proteins will migrate closest to the negative pole? hen lysozyme Both proteins will remain at the origin Hen ovalbumin
QUESTION 5 What is the amino acid attached to the tRNA with the following anticodon: CAG Glutamine Valine Aspartic Acid Proline None of the above Click Save and Submit to save and submit. Click Save All Answers to save all answers.
QUESTION 17 You have engineered a new mutation that removes the UAS sequence upstream of the GAL7 gene. How will this mutation affect GAL7 expression? Use the options below to type in the appropriate letter only here: A. GAL7 will not be expressed in the absence of galactose, but it will be expressed in the presence of galactose B. GAL7 will be expressed in the absence or presence of galactose C. GAL7 will be expressed in the absence of galactose, but it will not be expressed in the presence of galactose D. GAL7 will not be expressed in the absence or presence of galactose E. there is too little information to determine whether GAL7 will be expressed Will this mutant allele's effect on GAL7 expression be dominant or recessive to the wild-type allele in a diploid yeast cell? Use the options below to type in the appropriate letter only here: A. recessive B. dominant C. too little information to determine QUESTION 18 In eukaryotes, the ribosome is positioned to begin translation by: O A.…
QUESTION 13 A scientist would like to overexpress a lysosomal acid hydrolase in a cultured cell line as a way to investigate a potential therapy for a lysosomal storage disease. How might this scientist introduce a plasmid encoding this lysosomal enzyme into cells? O Scanning electron microscopy O Western blot analysis O Transfection with a lipid reagent (AKA liposomes) O Immunohistochemistry O Generate an organoid QUESTION 14 Heterotrimeric G-proteins that associate with the G-protein coupled receptors (GPCRs) consist of which of the following? OA. beta subunits C B. O C. alpha subunits alpha, beta, and gamma subuni OD. beta and gamma subunits O E. gamma subunits QUESTION 15 The activation of a common effector molecule in the cytoplasm by signals from a variety of unrelated receptors is called OA. Divergence OB. Convergence OC. Crosstalk OD. Transvergence QUESTION 16
QUESTION 9 Which of the following step is NOT involved in eukaryotic MRNA synthesis? O Elongation O Polyadenylation O Rho-dependent termination Splicing Capping
Question 17
Question 31 In E. coli, which of the following factors function to ensure the proper binding of tRNA Met during mRNA binding and ribosomal subunit assembly? I. IF-1 II. IF-2 III. IF-3 IV. EF-Ts A) I only B) I and III C) II and IV D) I and II
Question 7 About the helical structure of DNA: |A The DNA is always in the form of a type A closed helix (left rotation), whatever its composition in nucleotides. B DNA is rich in positive electrical charges at physiological (pH 7.4). C The helix is established between two com- plementary regions of the same strand. D The helix is formed by an esterification re- action between two strands. E All the above statements are wrong
Question 12 Match the tenzyme with the post translational moidification v pyruvate detydrogenase complex a. lipoylysine v aconitase b. phosphotylation an serine v phosphoglycerate mutase c ron-sultur center v phosphoglucomutese d. phosphorylation an histidine A Moving to another question will save this response.
QUESTION 1 The Wnt signaling pathway component, Dsh, effects the action of B catenin by: O A. inhibiting the function of axin in the destruction complex O B. blocking GSK-3B from joining the destruction complex O C. stimulating ubiquitination of B catenin O D. causing its release into the cytosol from the plasma membrane complex O E. causing an increase in phophorylation of B catenin QUESTION 2 PCR can be used to identify the breakage points of mtDNA that are joined to form a mitochondrial genome with a deletion. This techni que uses: O A. two primers outside the deleted region; a long PCR extension segment. O B. one primer within the deleted region and one primer outside the deleted region; a long PCR extension segment O C. one primer within the deleted region and one primer outside the deleted region; a short PCR extension segment O D. two primers outside the deleted region; a short PCR extension segment O E. two primers within the deleted region; a short PCR extension segment
Question 16 What happens when a stop codon is reached by a ribosome? A termination tRNAter binds to the codon and the growing peptide is transferred to it. When the peptidyl-tRNAter A reaches the P site, the ribosome is signaled to release the protein. The ribosome then is likely to dissociate. A termination tRNAter binds to the codon and the growing peptide is transferred to it. When the peptidyl-tRNAter (B) reaches the P site, the ribosome dissociates. A separate peptidyl transferase then releases the protein from tRNAter. A termination tRNAter binds to the codon and is used to release the growing peptide from the P site TRNA. The ribosome then is likely to dissociate. D A release factor binds to the codon and is used to release the growing peptide from the P site tRNA.
Question 32 Using the genetic code, indicate which polypeptides would be synthesized if poly-UGG were used in a synthetic RNA? NA 2nd potion U postion CAG Phe Ser Tyr Cys Phe Ser Tyr Cys U Leu Ser stop stop Leu Ser stop Trp Leu Pro His Arg Leu Pro His Arg Leu Pro Gin Arg Leu Pro Gin Arg lle Thr Asn Ser lle Thr Asn lle Thr Lys Arg Met Thr Lys Arg Val Ala Asp Gly Ala Asp Gly Val Ala Glu Gly Val Ala Glu Gly Amino Acids A) poly-V B) poly-G poly-W D) poly-Y O A G ၈၈၈၈»nt The

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