Where is the energy stored in a molecule of ATP?     In adenine     In the bonds between the sugar     Between the sugar and the first phosphate molecule     Between the second and third phosphate molecules.     None of the above

Why is there no blue color with Iodine when amylose reacts with saliva? Amylase in saliva causes the amylose chain to uncoil so Iodine is not trapped. Amylase in saliva reacts with iodine making it unable to complex with the amylose coil. Amylase in saliva causes the amylose chain to break into short chains and then into glucose which does not coil and so does not trap iodine. Amylase in saliva will replace the I2 in the amylose coil and so remove the color.

why do some polymers of glucose provide us with energy and others do not. what are some specific examples of both

The figure below shows that Adenosine P ATP Triphosphate P O A ADP can perform cellular work when it binds to an additional phosphate group O B. ATP can perform cellular work when it releases a phosphate group O C.ATP can be converted to ADP by adding a phosphate group ⒸD. energy is released from ATP during the process of cellular respiration Energy Adenosine ADP Diphosphate P P + P Phosphate (transferred to another molecule)

Which of the following conditions will produce active glycogen phosphorylase? AMP АТР Phosphorylation of Serine 14 Glucose Glucose-6-Phosphate Phosphorylation of Serine 14 and AMP Phosphorylation of Serine 14 and ATP

Many enzyme mechanisms involve transferring protons. Sidechains of an enzyme can act as catalytic acids or catalytic bases in this process. The figure below shows a step in the reaction by the enzyme triose phosphate isomerase. Glu165 group. -OH Would a catalytic acid gain or lose a proton? Which sidechain in the mechanism is acting as a catalytic acid? co CH,OPO, 2- Activity remaining (%) Would a catalytic base gain or lose a proton? Which sidechain in the mechanism is acting as a catalytic base? 100 Curve I 8 Glu¹65 9 Below are two pH rate profiles showing the percent activity as a function of pH. Answer the questions below about how these curves relate to the mechanism of triose phosphate isomerase. Remember what fraction of a titratable group is unprotonated at the pka. 10 OH In this reaction a carbonyl is converted into an enol intermediate. Circle the enol 100 Activity remaining (%) H Curve 2 CIOH CIOH CH₂OPO,²- 8 9 N N 10 7 pH PH i) Which of these curves shows the pH rate…

Describe the structure of ATP. Distinguish where the energy is contained with ATP molecules.

Draw a graph showing the change in free energy you would expect to see for the synthesis of ATP from ADP and PO4. Label DELTA - G , EA –enzyme, EA + enzyme

Why is ATP an important molecule in metabolism? It provides energy coupling between exergonic and endergonic reactions. Its hydrolysis provides an input of free energy for exergonic reaction Its terminal phosphate group contains a strong covalent bond that, when hydrolyzed, releases free energy. It is one of the four building blocks for DNA synthesis.

ymes change their conformation after each reaction, therefore they can only be used once. OEnzymes can be proteins that can be denatured by changes in pH or temperature. D Question 37 A major difference between purine and pyrimidine biosynthesis is that pyrimidine: O are attached to the ribose sugar while being synthesized O are completely synthesized prior to attaching to the ribose sugar O are partially synthesized, the sugar is added, then synthesis is completed O do not have a sugar moiety Question 38 Which of the following is produced in largest numbers by the TCA cycle?