MCB 450

UIUC MCB 450 Exam 1 (has lon capa and iclicker questions) With Complete Solutions

Which of the following properties of a chemical reaction are altered when the reaction is catalyzed by an enzyme? -The energy level of the initial state (reactants) is lowered -The energy level of the final state (products) is lowered -The energy level of the transition state is lowered -The reaction equilibrium is altered to favor the products - Answer The energy level of the transition state is lowered Which of these statements about Km is correct? -Km is the substrate concentra...

Coenzyme A is an acyl group carrier. The acyl group is linked to coenzyme A via a - Answer Thioester bond What is the role of the Arg finger in the ATP binding pocket of an ATPase? - Answer Polarization of the gamma phosphate The transfer of the phosphoryl group from Creatine phosphate (PEP) to ADP is an example of: - Answer Substrate-level phosphorylation Which of the following enzymes in gluconeogenesis bypasses an irreversible reaction in glycolysis? - Answer Glucose 6-ph...

What are the gene delivery systems for gene therapy? A.Viral vectors b.Naked DNA/RNA; nsed DNA particles d.Carriers of DNA - Answer viral vectors Which of the following best describes the TATA box? a. It is a sequence in chromosomes that marks replication origins. b. It is a sequence in the promoter region of genes that marks transcription start sites. c. It is a sequence in primary transcripts that marks cleavage and polyadenylation sites. d. It is a sequence in primary tran...

High levels of ATP and citrate: - Answer Inhibit glycolysis Indicate remote gluconeogenesis Indicate a high energy-well fed state. Which of the following would be associated with LOW pyruvate dehydrogenase rate? - Answer High NADH The hallmarks of acute alcoholism without food intake are acidosis and hypoglycemia. These metabolic changes are due to the: - Answer Metabolism of ethanol, which prevents the production of sufficient levels of blood glucose from lactate, glycerol and ...

Biomolecules can be divided into four different classes. Which of the following is NOT a major class of biomolecule? - Answer Fatty Acids Which of the following molecules are the major components of the collagen? - Answer proteins Water is said to be highly cohesive because water molecules interact with one another through: - Answer hydrogen bonds Which of the following is considered a noncovalent bond? - Answer -electrostatic interactions -hydrogen bonds -Van der Waals i...

UIUC MCB 450 EXAM 2 LON-CAPA PROBLEMS Questions With All Correct Answers