Which of the following is not a biochemical process affecting the bioavailability of enzymes? Choose one:...
Which of the following is not a biochemical process affecting the bioavailability of enzymes? Choose one: A. RNA synthesis B. binding of a competitive inhibitor C. protein synthesis and degradation D. RNA processing
Which of the following is NOT a DNA binding protein? Choose one: O A. histone proteins O B. ribosomal proteins O C. transcription factors O D. RNA polymerase
1. Protein kinases phosphorylate target enzymes and as a result enzymes become activated or inactivated. Which of the statements are TRUE? (Multiple answers: You can select more than one option) A. Phosphorylated enzymes behave like competitive inhibitors B The presence of a phosphate acts as a non-competitive inhibitor/activator. No change in Km but significant change in Vmax C. The presence of a phosphate group induces a conformational change that modifies the affinity and catalytic ability of a target enzyme D....
A. Choose anly one correcet answer for each of the following questions (4 pts cach). AL Some and KM values are shown below for enzyme-substrate pairs. Which of the following enzymes is most efficient in converting the substrate into the product? b) kes.-4x10s s", KM-0.026 M d)k,,-5.7 x1o's", K-2x10s M c)人at-900 s", KM-2.5 × 10.5 M A2. Which of the following enzyme reaction mechanisms has multiple substrates? a) induced-fit e) Michaclis-Menton b) random sequential d) reversible covalent modification e) None...
Which of the following enzymes and its respective pathway are activated as a result of glucagon binding to its receptor in adipose tissue? glycogen phosphorylase and glycogen degradation phosphofructokinase 1 and glycolysis hormone sensitive (triacylglycerol) lipase and polysis fructose 16 bisphosphatase and gluconeogeness glycogen synthase and glycogen synthesis
Which of the following viruses depend on virion enzymes to start the virus replication cycle after delivery of the genome to the host cell? a poliovirus b) influenza c) retrovirus d) all of the above e) b and c of the above ONE or MORE of the following statements is correct. Using the key below, choose the appropriate answer: a) if only 1, 2, and 3, are correct b) if only 1 and 3 are correct c) if only 2...
MicroRNAs are processed by the enzymes _______ and ______. One strand of the microRNA is loaded into a silencing complex named _________. The microRNAs target mRNA for ___________ or ___________. a. Drosha, Dicer, RISC, mRNA degradation, translational repression b. RISC, Dicer, Drosha, alternative splicing, RNA editing c. RISC, Dicer, Drosha, mRNA degradation, translational repression d. Drosha, Dicer, RISC, alternative splicing, RNA editing
PLease solve asap Which of the following are characteristics of allosteric enzymes? Choose all that apply. Allosteric enzymes may have binding sites for regulatory molecules that are separate from active sites, conform to Michaelis-Menten kinetics. generally have more than one subunit. undergo conformational changes as a result of modulator binding, tend to have a hyperbolic curve of V0 vs. [S].
4. Telomerases... a) are RNA-containing enzymes involved in replicating the ends of linear chromosomes b) cause aging in cells c) are structures located at the ends of eukaryotic chromosomes d) are needed by bacteria to complete synthesis of their chromosome ends e) are needed by bacteria to supercoil DNA 5. DNA methylation a) Modifies bases of tRNA molecules, allowing wobble b) Alters the activity of DNA polymerase by affecting access to the DNA c) Is a modification of histone tails...
49. Which one of these enzymes is involved in the process of transcription? helicase primase gyrase DNA polymerase RNA polymerase nearumning genes have at their terminals