WGU C785

QUESTIONS AND ANSWERS

WGU C785 Biochemistry Unit Exam Questions & Answers Latest 2024/2025

What is the basic structure of an amino acid? What do they look like? - -amino group (NH2 or NH3), carboxyl group (COO or COOH), alpha carbon (C), and variable group How do you identify the 3 different types of side chains: non-polar/hydrophobic, polar, and charged? - -Non-polar/hydrophobic - end with CH or "can't have" water. Polar - end with OH, SH, or NH. Charged - end with a charge what kinds of bonds do each of the 3 different types of side chains make? - -ionic, hydrophobic/nonpola...

During gluconeogenesis, how many ATP molecules are consumed for each glucose molecule produced? - 6 Which molecule signals the liver to release glucose by breaking down glycogen? - Glucagon Which molecule is regenerated with the production of lactate during anaerobic metabolism? - NAD+ During aerobic metabolism, acetyl-CoA is produced from which molecule? - Pyruvate Why would a marathon runner consume a large meal full of complex carbohydrates the night before her run? - Replenish cellular...

The pH of the lungs due to exhalation? - -CO2 decreases from exhalation, thus the pH of the lungs increases. Hemoglobin acts as a buffer to prevent blood from becoming too acidic by binding? - -Excess H+ What enables hemoglobin to be an effective oxygen delivery molecule? - -Cooperativity What makes hemoglobin an effective oxygen transport molecule? - -Its affinity for oxygen is regulated by pH. pH of the muscles due to aerobic exercise - -CO2 increases from aerobic metabolism, thus the pH...

Catalyst/ Enzymes do what to the activation level - -Lower the activation level & speed up the reaction rate The enzyme Kinase does what to a phosphate group? - -Adds The enzyme Phosphatase does what to a phosphate group? - -Removes Which level of protein structure provides enzymes with their substrate specificity? - -Tertiary structure Phosphorylation - -Turns on phosphate groups Dephosphorylation - -Turns off phosphate group

Which mRNA sequence results in a polypeptide that contains three amino acids? - -5' - CUU GAU ACU UAG - 3' Which RNA sequence would end in the following polypeptide? Phe-Thr-Val-Stop - -5' - UUC ACA GUA UAA - 3' What is the complementary sequence for the following DNA sequence? 5' - GCC ATC TCG AAT - 3' - -5' - ATT CGA GAT GGC - 3' Assuming 100% reaction efficiency, how many DNA copies are created after the completion of four complete PCR cycles? - -16