Biochem Exam 3 Rutgers Murphy Practice Questions and Answers

Biochem Exam 3 Rutgers Murphy Practice Questions and Answers Below is a diagram that best explain which type of cellular signaling? - Ans:-G-coupled protein receptor signaling The intracellular portion of the G-Coupled Protein that exchanges GDP for GTP, dissociating from the other two and becomes active is called? - Ans:-alpha The type of hormone receptors that are found within the cell are called? - Ans:-Nuclear receptors Determine the primary sequence of a protein that would be produced from the following non-coding DNA sequence. 5'-GCG CAT TTC CCG TAT-3' - Ans:-Ile-Arg-Glu-Met-Arg When v-snares and t-snares pull together what is the result of the membrane and proteins involved? A) The vesicle and the plasma membrane fuse resulting in endocytosis of the material. B) There is a tension supplied by the t-snares and v-snares that results in membrane fusion and the subsequent deliver of protein to the extracelluar space. ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/9 C) The vesicles and the golgi membrane fuse together to a pod that proteins travel into the mitochondria. D) Spontaneous fusion between the vesicle and the plasma membrane occurs and results in delivery of the protein contained in the vesicle to the outside. - Ans:-B) There is a tension supplied by the t- snares and v-snares that results in membrane fusion and the subsequent deliver of protein to the extracelluar space. Which of the following best describes the role of EF-Tu (elongation factor Tu) in elongation of protein synthesis? - Ans:-It is involved in the correct binding of amino acyl tRNA to the A site of the ribosome Which of the following chemicals can be used to block all de novo (new) proteins synthesis in a cell? - Ans:-cyclohexamide In the following picture, which arrow is pointing to the acceptor stem of tRNA? - Ans:-A real-time PCR is used to indirectly analyze the levels of what molecule? - Ans:-mRNA A western blot is used to detect level of which of the following - Ans:-protein Which of the following describes the flow of genetic information as stated in the central Dogma of molecular biology? A) RNA -- Protein -- DNA B) None of the choices are correct ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/9 C) DNA -- RNA -- Protein D) Protein -- RNA -- DNA - Ans:-C) DNA (replication) -- (transcription) RNA -- (translation) Protein Nucleosomes are composed of all the following except: A) H2A B) H4 C) H5 D) H2B E) H3 - Ans:-C) H5 Which of the following is not a second messenger molecule? A) cGMP B) Inositol-phospholipid system C) cAMP D) Calcium E) Steroids - Ans:-E) Steroids ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 4/9 Point mutations that occur in a population to any extent are referred to as: A) Single Nucleotide Polymorphisms B) Silent mutations C) Nonsense mutation D) Transition mutation E) Missense mutation - Ans:-A) Single Nucleotide Polymorphisms The DNA "backbone" is composed of: A) None of the above are correct B) A glycosidic bond between deoxyribose and a nitrogen